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2017-05-04Merge tag 'for-linus-4.12b-rc0b-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: "Xen fixes and featrues for 4.12. The main changes are: - enable building the kernel with Xen support but without enabling paravirtualized mode (Vitaly Kuznetsov) - add a new 9pfs xen frontend driver (Stefano Stabellini) - simplify Xen's cpuid handling by making use of cpu capabilities (Juergen Gross) - add/modify some headers for new Xen paravirtualized devices (Oleksandr Andrushchenko) - EFI reset_system support under Xen (Julien Grall) - and the usual cleanups and corrections" * tag 'for-linus-4.12b-rc0b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (57 commits) xen: Move xen_have_vector_callback definition to enlighten.c xen: Implement EFI reset_system callback arm/xen: Consolidate calls to shutdown hypercall in a single helper xen: Export xen_reboot xen/x86: Call xen_smp_intr_init_pv() on BSP xen: Revert commits da72ff5bfcb0 and 72a9b186292d xen/pvh: Do not fill kernel's e820 map in init_pvh_bootparams() xen/scsifront: use offset_in_page() macro xen/arm,arm64: rename __generic_dma_ops to xen_get_dma_ops xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..." xen/9pfs: select CONFIG_XEN_XENBUS_FRONTEND x86/cpu: remove hypervisor specific set_cpu_features vmware: set cpu capabilities during platform initialization x86/xen: use capabilities instead of fake cpuid values for xsave x86/xen: use capabilities instead of fake cpuid values for x2apic x86/xen: use capabilities instead of fake cpuid values for mwait x86/xen: use capabilities instead of fake cpuid values for acpi x86/xen: use capabilities instead of fake cpuid values for acc x86/xen: use capabilities instead of fake cpuid values for mtrr x86/xen: use capabilities instead of fake cpuid values for aperf ...
2017-05-04of: fix sparse warning in of_pci_range_parser_oneRob Herring
sparse gives the following warning for 'pci_space': ../drivers/of/address.c:266:26: warning: incorrect type in assignment (different base types) ../drivers/of/address.c:266:26: expected unsigned int [unsigned] [usertype] pci_space ../drivers/of/address.c:266:26: got restricted __be32 const [usertype] <noident> It appears that pci_space is only ever accessed on powerpc, so the endian swap is often not needed. Cc: stable@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
2017-05-04of: fix sparse warnings in of_find_next_cache_nodeRob Herring
sparse gives a warning that 'handle' is not a __be32: ../drivers/of/base.c:2261:61: warning: incorrect type in argument 1 (different base types) ../drivers/of/base.c:2261:61: expected restricted __be32 const [usertype] *p ../drivers/of/base.c:2261:61: got unsigned int const [usertype] *[assigned] handle We could just change the type, but the code can be improved by using of_parse_phandle instead of open coding it with of_get_property and of_find_node_by_phandle. Signed-off-by: Rob Herring <robh@kernel.org>
2017-05-04cfg80211: make RATE_INFO_BW_20 the defaultJohannes Berg
Due to the way I did the RX bitrate conversions in mac80211 with spatch, going setting flags to setting the value, many drivers now don't set the bandwidth value for 20 MHz, since with the flags it wasn't necessary to (there was no 20 MHz flag, only the others.) Rather than go through and try to fix up all the drivers, instead renumber the enum so that 20 MHz, which is the typical bandwidth, actually has the value 0, making those drivers all work again. If VHT was hit used with a driver not reporting it, e.g. iwlmvm, this manifested in hitting the bandwidth warning in cfg80211_calculate_bitrate_vht(). Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Tested-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04ipv6: initialize route null entry in addrconf_init()WANG Cong
Andrey reported a crash on init_net.ipv6.ip6_null_entry->rt6i_idev since it is always NULL. This is clearly wrong, we have code to initialize it to loopback_dev, unfortunately the order is still not correct. loopback_dev is registered very early during boot, we lose a chance to re-initialize it in notifier. addrconf_init() is called after ip6_route_init(), which means we have no chance to correct it. Fix it by moving this initialization explicitly after ipv6_add_dev(init_net.loopback_dev) in addrconf_init(). Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04Merge branch 'qed-fixes'David S. Miller
Sudarsana Reddy Kalluru says: ==================== qed*: Bug fix series. The series contains minor bug fixes for qed/qede drivers. Please consider applying it to 'net' branch. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04qede: Fix possible misconfiguration of advertised autoneg value.sudarsana.kalluru@cavium.com
Fail the configuration of advertised speed-autoneg value if the config update is not supported. Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04qed: Fix overriding of supported autoneg value.sudarsana.kalluru@cavium.com
Driver currently uses advertised-autoneg value to populate the supported-autoneg field. When advertised field is updated, user gets the same value for supported field. Supported-autoneg value need to be populated from the link capabilities value returned by the MFW. Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04qed*: Fix possible overflow for status block id field.sudarsana.kalluru@cavium.com
Value for status block id could be more than 256 in 100G mode, need to update its data type from u8 to u16. Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04of/unittest: Missing unlocks on errorDan Carpenter
Static checkers complain that we should unlock before returning. Which is true. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
2017-05-04rtnetlink: NUL-terminate IFLA_PHYS_PORT_NAME stringMichal Schmidt
IFLA_PHYS_PORT_NAME is a string attribute, so terminate it with \0. Otherwise libnl3 fails to validate netlink messages with this attribute. "ip -detail a" assumes too that the attribute is NUL-terminated when printing it. It often was, due to padding. I noticed this as libvirtd failing to start on a system with sfc driver after upgrading it to Linux 4.11, i.e. when sfc added support for phys_port_name. Signed-off-by: Michal Schmidt <mschmidt@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04netvsc: make sure napi enabled before vmbus_openstephen hemminger
This fixes a race where vmbus callback for new packet arriving could occur before NAPI is initialized. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04aquantia: Fix driver name reported by ethtoolPavel Belous
V2: using "aquantia" subsystem tag. The command "ethtool -i ethX" should display driver name (driver: atlantic) instead vendor name (driver: aquantia). Signed-off-by: Pavel Belous <pavel.belous@aquantia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04ipv4, ipv6: ensure raw socket message is big enough to hold an IP headerAlexander Potapenko
raw_send_hdrinc() and rawv6_send_hdrinc() expect that the buffer copied from the userspace contains the IPv4/IPv6 header, so if too few bytes are copied, parts of the header may remain uninitialized. This bug has been detected with KMSAN. For the record, the KMSAN report: ================================================================== BUG: KMSAN: use of unitialized memory in nf_ct_frag6_gather+0xf5a/0x44a0 inter: 0 CPU: 0 PID: 1036 Comm: probe Not tainted 4.11.0-rc5+ #2455 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 dump_stack+0x143/0x1b0 lib/dump_stack.c:52 kmsan_report+0x16b/0x1e0 mm/kmsan/kmsan.c:1078 __kmsan_warning_32+0x5c/0xa0 mm/kmsan/kmsan_instr.c:510 nf_ct_frag6_gather+0xf5a/0x44a0 net/ipv6/netfilter/nf_conntrack_reasm.c:577 ipv6_defrag+0x1d9/0x280 net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:68 nf_hook_entry_hookfn ./include/linux/netfilter.h:102 nf_hook_slow+0x13f/0x3c0 net/netfilter/core.c:310 nf_hook ./include/linux/netfilter.h:212 NF_HOOK ./include/linux/netfilter.h:255 rawv6_send_hdrinc net/ipv6/raw.c:673 rawv6_sendmsg+0x2fcb/0x41a0 net/ipv6/raw.c:919 inet_sendmsg+0x3f8/0x6d0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 sock_sendmsg net/socket.c:643 SYSC_sendto+0x6a5/0x7c0 net/socket.c:1696 SyS_sendto+0xbc/0xe0 net/socket.c:1664 do_syscall_64+0x72/0xa0 arch/x86/entry/common.c:285 entry_SYSCALL64_slow_path+0x25/0x25 arch/x86/entry/entry_64.S:246 RIP: 0033:0x436e03 RSP: 002b:00007ffce48baf38 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000004002b0 RCX: 0000000000436e03 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffce48baf90 R08: 00007ffce48baf50 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000401790 R14: 0000000000401820 R15: 0000000000000000 origin: 00000000d9400053 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:362 kmsan_internal_poison_shadow+0xb1/0x1a0 mm/kmsan/kmsan.c:257 kmsan_poison_shadow+0x6d/0xc0 mm/kmsan/kmsan.c:270 slab_alloc_node mm/slub.c:2735 __kmalloc_node_track_caller+0x1f4/0x390 mm/slub.c:4341 __kmalloc_reserve net/core/skbuff.c:138 __alloc_skb+0x2cd/0x740 net/core/skbuff.c:231 alloc_skb ./include/linux/skbuff.h:933 alloc_skb_with_frags+0x209/0xbc0 net/core/skbuff.c:4678 sock_alloc_send_pskb+0x9ff/0xe00 net/core/sock.c:1903 sock_alloc_send_skb+0xe4/0x100 net/core/sock.c:1920 rawv6_send_hdrinc net/ipv6/raw.c:638 rawv6_sendmsg+0x2918/0x41a0 net/ipv6/raw.c:919 inet_sendmsg+0x3f8/0x6d0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 sock_sendmsg net/socket.c:643 SYSC_sendto+0x6a5/0x7c0 net/socket.c:1696 SyS_sendto+0xbc/0xe0 net/socket.c:1664 do_syscall_64+0x72/0xa0 arch/x86/entry/common.c:285 return_from_SYSCALL_64+0x0/0x6a arch/x86/entry/entry_64.S:246 ================================================================== , triggered by the following syscalls: socket(PF_INET6, SOCK_RAW, IPPROTO_RAW) = 3 sendto(3, NULL, 0, 0, {sa_family=AF_INET6, sin6_port=htons(0), inet_pton(AF_INET6, "ff00::", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EPERM A similar report is triggered in net/ipv4/raw.c if we use a PF_INET socket instead of a PF_INET6 one. Signed-off-by: Alexander Potapenko <glider@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04net/sched: remove redundant null check on headColin Ian King
head is previously null checked and so the 2nd null check on head is redundant and therefore can be removed. Detected by CoverityScan, CID#1399505 ("Logically dead code") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04tcp: do not inherit fastopen_req from parentEric Dumazet
Under fuzzer stress, it is possible that a child gets a non NULL fastopen_req pointer from its parent at accept() time, when/if parent morphs from listener to active session. We need to make sure this can not happen, by clearing the field after socket cloning. BUG: Double free or freeing an invalid pointer Unexpected shadow byte: 0xFB CPU: 3 PID: 20933 Comm: syz-executor3 Not tainted 4.11.0+ #306 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x292/0x395 lib/dump_stack.c:52 kasan_object_err+0x1c/0x70 mm/kasan/report.c:164 kasan_report_double_free+0x5c/0x70 mm/kasan/report.c:185 kasan_slab_free+0x9d/0xc0 mm/kasan/kasan.c:580 slab_free_hook mm/slub.c:1357 [inline] slab_free_freelist_hook mm/slub.c:1379 [inline] slab_free mm/slub.c:2961 [inline] kfree+0xe8/0x2b0 mm/slub.c:3882 tcp_free_fastopen_req net/ipv4/tcp.c:1077 [inline] tcp_disconnect+0xc15/0x13e0 net/ipv4/tcp.c:2328 inet_child_forget+0xb8/0x600 net/ipv4/inet_connection_sock.c:898 inet_csk_reqsk_queue_add+0x1e7/0x250 net/ipv4/inet_connection_sock.c:928 tcp_get_cookie_sock+0x21a/0x510 net/ipv4/syncookies.c:217 cookie_v4_check+0x1a19/0x28b0 net/ipv4/syncookies.c:384 tcp_v4_cookie_check net/ipv4/tcp_ipv4.c:1384 [inline] tcp_v4_do_rcv+0x731/0x940 net/ipv4/tcp_ipv4.c:1421 tcp_v4_rcv+0x2dc0/0x31c0 net/ipv4/tcp_ipv4.c:1715 ip_local_deliver_finish+0x4cc/0xc20 net/ipv4/ip_input.c:216 NF_HOOK include/linux/netfilter.h:257 [inline] ip_local_deliver+0x1ce/0x700 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:492 [inline] ip_rcv_finish+0xb1d/0x20b0 net/ipv4/ip_input.c:396 NF_HOOK include/linux/netfilter.h:257 [inline] ip_rcv+0xd8c/0x19c0 net/ipv4/ip_input.c:487 __netif_receive_skb_core+0x1ad1/0x3400 net/core/dev.c:4210 __netif_receive_skb+0x2a/0x1a0 net/core/dev.c:4248 process_backlog+0xe5/0x6c0 net/core/dev.c:4868 napi_poll net/core/dev.c:5270 [inline] net_rx_action+0xe70/0x18e0 net/core/dev.c:5335 __do_softirq+0x2fb/0xb99 kernel/softirq.c:284 do_softirq_own_stack+0x1c/0x30 arch/x86/entry/entry_64.S:899 </IRQ> do_softirq.part.17+0x1e8/0x230 kernel/softirq.c:328 do_softirq kernel/softirq.c:176 [inline] __local_bh_enable_ip+0x1cf/0x1e0 kernel/softirq.c:181 local_bh_enable include/linux/bottom_half.h:31 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:931 [inline] ip_finish_output2+0x9ab/0x15e0 net/ipv4/ip_output.c:230 ip_finish_output+0xa35/0xdf0 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:246 [inline] ip_output+0x1f6/0x7b0 net/ipv4/ip_output.c:404 dst_output include/net/dst.h:486 [inline] ip_local_out+0x95/0x160 net/ipv4/ip_output.c:124 ip_queue_xmit+0x9a8/0x1a10 net/ipv4/ip_output.c:503 tcp_transmit_skb+0x1ade/0x3470 net/ipv4/tcp_output.c:1057 tcp_write_xmit+0x79e/0x55b0 net/ipv4/tcp_output.c:2265 __tcp_push_pending_frames+0xfa/0x3a0 net/ipv4/tcp_output.c:2450 tcp_push+0x4ee/0x780 net/ipv4/tcp.c:683 tcp_sendmsg+0x128d/0x39b0 net/ipv4/tcp.c:1342 inet_sendmsg+0x164/0x5b0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x660/0x810 net/socket.c:1696 SyS_sendto+0x40/0x50 net/socket.c:1664 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446059 RSP: 002b:00007faa6761fb58 EFLAGS: 00000282 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000000446059 RDX: 0000000000000001 RSI: 0000000020ba3fcd RDI: 0000000000000017 RBP: 00000000006e40a0 R08: 0000000020ba4ff0 R09: 0000000000000010 R10: 0000000020000000 R11: 0000000000000282 R12: 0000000000708150 R13: 0000000000000000 R14: 00007faa676209c0 R15: 00007faa67620700 Object at ffff88003b5bbcb8, in cache kmalloc-64 size: 64 Allocated: PID = 20909 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x43/0xd0 mm/kasan/kasan.c:513 set_track mm/kasan/kasan.c:525 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:616 kmem_cache_alloc_trace+0x82/0x270 mm/slub.c:2745 kmalloc include/linux/slab.h:490 [inline] kzalloc include/linux/slab.h:663 [inline] tcp_sendmsg_fastopen net/ipv4/tcp.c:1094 [inline] tcp_sendmsg+0x221a/0x39b0 net/ipv4/tcp.c:1139 inet_sendmsg+0x164/0x5b0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x660/0x810 net/socket.c:1696 SyS_sendto+0x40/0x50 net/socket.c:1664 entry_SYSCALL_64_fastpath+0x1f/0xbe Freed: PID = 20909 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x43/0xd0 mm/kasan/kasan.c:513 set_track mm/kasan/kasan.c:525 [inline] kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:589 slab_free_hook mm/slub.c:1357 [inline] slab_free_freelist_hook mm/slub.c:1379 [inline] slab_free mm/slub.c:2961 [inline] kfree+0xe8/0x2b0 mm/slub.c:3882 tcp_free_fastopen_req net/ipv4/tcp.c:1077 [inline] tcp_disconnect+0xc15/0x13e0 net/ipv4/tcp.c:2328 __inet_stream_connect+0x20c/0xf90 net/ipv4/af_inet.c:593 tcp_sendmsg_fastopen net/ipv4/tcp.c:1111 [inline] tcp_sendmsg+0x23a8/0x39b0 net/ipv4/tcp.c:1139 inet_sendmsg+0x164/0x5b0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x660/0x810 net/socket.c:1696 SyS_sendto+0x40/0x50 net/socket.c:1664 entry_SYSCALL_64_fastpath+0x1f/0xbe Fixes: e994b2f0fb92 ("tcp: do not lock listener to process SYN packets") Fixes: 7db92362d2fe ("tcp: fix potential double free issue for fastopen_req") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Wei Wang <weiwan@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04dm integrity: improve the Kconfig help text for DM_INTEGRITYMike Snitzer
Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Milan Broz <gmazyland@gmail.com>
2017-05-04forcedeth: remove unnecessary carrier status checkZhu Yanjun
Since netif_carrier_on() will do nothing if device's carrier is already on, so it's unnecessary to do carrier status check. It's the same for netif_carrier_off(). Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-04dm cache policy smq: cleanup free_target_met() and clean_target_met()Mike Snitzer
Depending on the passed @idle arg, there may be no need to calculate 'nr_free' or 'nr_clean' respectively in free_target_met() and clean_target_met(). Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-05-04dm cache policy smq: allow demotions to happen even during continuous IOJoe Thornber
dm-cache's smq policy tries hard to do it's work during the idle periods when there is no IO. But if there are no idle periods (eg, a long fio run) we still need to allow some demotions and promotions to occur. To achieve this, pass @idle=true to queue_promotion()'s free_target_met() call so that free_target_met() doesn't short-circuit the possibility of demotion simply because it isn't an idle period. Fixes: b29d4986d0 ("dm cache: significant rework to leverage dm-bio-prison-v2") Reported-by: John Harrigan <jharriga@redhat.com> Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2017-05-04mq-deadline: add debugfs attributesOmar Sandoval
Expose the fifo lists, cached next requests, batching state, and dispatch list. It'd also be possible to add the sorted lists, but there aren't already seq_file helpers for rbtrees. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04kyber: add debugfs attributesOmar Sandoval
Expose the domain token pools, asynchronous sbitmap depth, domain request lists, and batching state. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq-debugfs: allow schedulers to register debugfs attributesOmar Sandoval
This provides the infrastructure for schedulers to expose their internal state through debugfs. We add a list of queue attributes and a list of hctx attributes to struct elevator_type and wire them up when switching schedulers. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Add missing seq_file.h header in blk-mq-debugfs.h Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq: untangle debugfs and sysfsOmar Sandoval
Originally, I tied debugfs registration/unregistration together with sysfs. There's no reason to do this, and it's getting in the way of letting schedulers define their own debugfs attributes. Instead, tie the debugfs registration to the lifetime of the structures themselves. The saner lifetimes mean we can also get rid of the extra mq directory and move everything one level up. I.e., nvme0n1/mq/hctx0/tags is now just nvme0n1/hctx0/tags. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq: move debugfs declarations to a separate header fileOmar Sandoval
Preparation for adding more declarations. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq: Do not invoke queue operations on a dead queueBart Van Assche
In commit e869b5462f83 ("blk-mq: Unregister debugfs attributes earlier"), we shuffled the debugfs cleanup around so that the "state" attribute was removed before we freed the blk-mq data structures. However, later changes are going to undo that, so we need to explicitly disallow running a dead queue. [Omar: rebased and updated commit message] Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq-debugfs: get rid of a bunch of boilerplateOmar Sandoval
A large part of blk-mq-debugfs.c is file_operations and seq_file boilerplate. This sucks as is but will suck even more when schedulers can define their own debugfs entries. Factor it all out into a single blk_mq_debugfs_fops which multiplexes as needed. We store the request_queue, blk_mq_hw_ctx, or blk_mq_ctx in the parent directory dentry, which is kind of hacky, but it works. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq-debugfs: rename hw queue directories from <n> to hctx<n>Omar Sandoval
It's not clear what these numbered directories represent unless you consult the code. We're about to get rid of the intermediate "mq" directory, so these would be even more confusing without that context. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq-debugfs: don't open code strstrip()Omar Sandoval
Slightly more readable, plus we also strip leading spaces. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq-debugfs: error on long write to queue "state" fileOmar Sandoval
blk_queue_flags_store() currently truncates and returns a short write if the operation being written is too long. This can give us weird results, like here: $ echo "run bar" echo: write error: invalid argument $ dmesg [ 1103.075435] blk_queue_flags_store: unsupported operation bar. Use either 'run' or 'start' Instead, return an error if the user does this. While we're here, make the argument names consistent with everywhere else in this file. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq-debugfs: clean up flag definitionsOmar Sandoval
Make sure the spelled out flag names match the definition. This also adds a missing hctx state, BLK_MQ_S_START_ON_RUN, and a missing cmd_flag, __REQ_NOUNMAP. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04blk-mq-debugfs: separate flags with |Omar Sandoval
This reads more naturally than spaces. Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04nfs: Fix bdi handling for cloned superblocksJan Kara
In commit 0d3b12584972 "nfs: Convert to separately allocated bdi" I have wrongly cloned bdi reference in nfs_clone_super(). Further inspection has shown that originally the code was actually allocating a new bdi (in ->clone_server callback) which was later registered in nfs_fs_mount_common() and used for sb->s_bdi in nfs_initialise_sb(). This could later result in bdi for the original superblock not getting unregistered when that superblock got shutdown (as the cloned sb still held bdi reference) and later when a new superblock was created under the same anonymous device number, a clash in sysfs has happened on bdi registration: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10284 at /linux-next/fs/sysfs/dir.c:31 sysfs_warn_dup+0x64/0x74 sysfs: cannot create duplicate filename '/devices/virtual/bdi/0:32' Modules linked in: axp20x_usb_power gpio_axp209 nvmem_sunxi_sid sun4i_dma sun4i_ss virt_dma CPU: 1 PID: 10284 Comm: mount.nfs Not tainted 4.11.0-rc4+ #14 Hardware name: Allwinner sun7i (A20) Family [<c010f19c>] (unwind_backtrace) from [<c010bc74>] (show_stack+0x10/0x14) [<c010bc74>] (show_stack) from [<c03c6e24>] (dump_stack+0x78/0x8c) [<c03c6e24>] (dump_stack) from [<c0122200>] (__warn+0xe8/0x100) [<c0122200>] (__warn) from [<c0122250>] (warn_slowpath_fmt+0x38/0x48) [<c0122250>] (warn_slowpath_fmt) from [<c02ac178>] (sysfs_warn_dup+0x64/0x74) [<c02ac178>] (sysfs_warn_dup) from [<c02ac254>] (sysfs_create_dir_ns+0x84/0x94) [<c02ac254>] (sysfs_create_dir_ns) from [<c03c8b8c>] (kobject_add_internal+0x9c/0x2ec) [<c03c8b8c>] (kobject_add_internal) from [<c03c8e24>] (kobject_add+0x48/0x98) [<c03c8e24>] (kobject_add) from [<c048d75c>] (device_add+0xe4/0x5a0) [<c048d75c>] (device_add) from [<c048ddb4>] (device_create_groups_vargs+0xac/0xbc) [<c048ddb4>] (device_create_groups_vargs) from [<c048dde4>] (device_create_vargs+0x20/0x28) [<c048dde4>] (device_create_vargs) from [<c02075c8>] (bdi_register_va+0x44/0xfc) [<c02075c8>] (bdi_register_va) from [<c023d378>] (super_setup_bdi_name+0x48/0xa4) [<c023d378>] (super_setup_bdi_name) from [<c0312ef4>] (nfs_fill_super+0x1a4/0x204) [<c0312ef4>] (nfs_fill_super) from [<c03133f0>] (nfs_fs_mount_common+0x140/0x1e8) [<c03133f0>] (nfs_fs_mount_common) from [<c03335cc>] (nfs4_remote_mount+0x50/0x58) [<c03335cc>] (nfs4_remote_mount) from [<c023ef98>] (mount_fs+0x14/0xa4) [<c023ef98>] (mount_fs) from [<c025cba0>] (vfs_kern_mount+0x54/0x128) [<c025cba0>] (vfs_kern_mount) from [<c033352c>] (nfs_do_root_mount+0x80/0xa0) [<c033352c>] (nfs_do_root_mount) from [<c0333818>] (nfs4_try_mount+0x28/0x3c) [<c0333818>] (nfs4_try_mount) from [<c0313874>] (nfs_fs_mount+0x2cc/0x8c4) [<c0313874>] (nfs_fs_mount) from [<c023ef98>] (mount_fs+0x14/0xa4) [<c023ef98>] (mount_fs) from [<c025cba0>] (vfs_kern_mount+0x54/0x128) [<c025cba0>] (vfs_kern_mount) from [<c02600f0>] (do_mount+0x158/0xc7c) [<c02600f0>] (do_mount) from [<c0260f98>] (SyS_mount+0x8c/0xb4) [<c0260f98>] (SyS_mount) from [<c0107840>] (ret_fast_syscall+0x0/0x3c) Fix the problem by always creating new bdi for a superblock as we used to do. Reported-and-tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> Fixes: 0d3b12584972ce5781179ad3f15cca3cdb5cae05 Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04block/mq: Cure cpu hotplug lock inversionPeter Zijlstra
By poking at /debug/sched_features I triggered the following splat: [] ====================================================== [] WARNING: possible circular locking dependency detected [] 4.11.0-00873-g964c8b7-dirty #694 Not tainted [] ------------------------------------------------------ [] bash/2109 is trying to acquire lock: [] (cpu_hotplug_lock.rw_sem){++++++}, at: [<ffffffff8120cb8b>] static_key_slow_dec+0x1b/0x50 [] [] but task is already holding lock: [] (&sb->s_type->i_mutex_key#4){+++++.}, at: [<ffffffff81140216>] sched_feat_write+0x86/0x170 [] [] which lock already depends on the new lock. [] [] [] the existing dependency chain (in reverse order) is: [] [] -> #2 (&sb->s_type->i_mutex_key#4){+++++.}: [] lock_acquire+0x100/0x210 [] down_write+0x28/0x60 [] start_creating+0x5e/0xf0 [] debugfs_create_dir+0x13/0x110 [] blk_mq_debugfs_register+0x21/0x70 [] blk_mq_register_dev+0x64/0xd0 [] blk_register_queue+0x6a/0x170 [] device_add_disk+0x22d/0x440 [] loop_add+0x1f3/0x280 [] loop_init+0x104/0x142 [] do_one_initcall+0x43/0x180 [] kernel_init_freeable+0x1de/0x266 [] kernel_init+0xe/0x100 [] ret_from_fork+0x31/0x40 [] [] -> #1 (all_q_mutex){+.+.+.}: [] lock_acquire+0x100/0x210 [] __mutex_lock+0x6c/0x960 [] mutex_lock_nested+0x1b/0x20 [] blk_mq_init_allocated_queue+0x37c/0x4e0 [] blk_mq_init_queue+0x3a/0x60 [] loop_add+0xe5/0x280 [] loop_init+0x104/0x142 [] do_one_initcall+0x43/0x180 [] kernel_init_freeable+0x1de/0x266 [] kernel_init+0xe/0x100 [] ret_from_fork+0x31/0x40 [] *** DEADLOCK *** [] [] 3 locks held by bash/2109: [] #0: (sb_writers#11){.+.+.+}, at: [<ffffffff81292bcd>] vfs_write+0x17d/0x1a0 [] #1: (debugfs_srcu){......}, at: [<ffffffff8155a90d>] full_proxy_write+0x5d/0xd0 [] #2: (&sb->s_type->i_mutex_key#4){+++++.}, at: [<ffffffff81140216>] sched_feat_write+0x86/0x170 [] [] stack backtrace: [] CPU: 9 PID: 2109 Comm: bash Not tainted 4.11.0-00873-g964c8b7-dirty #694 [] Hardware name: Intel Corporation S2600GZ/S2600GZ, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013 [] Call Trace: [] lock_acquire+0x100/0x210 [] get_online_cpus+0x2a/0x90 [] static_key_slow_dec+0x1b/0x50 [] static_key_disable+0x20/0x30 [] sched_feat_write+0x131/0x170 [] full_proxy_write+0x97/0xd0 [] __vfs_write+0x28/0x120 [] vfs_write+0xb5/0x1a0 [] SyS_write+0x49/0xa0 [] entry_SYSCALL_64_fastpath+0x23/0xc2 This is because of the cpu hotplug lock rework. Break the chain at #1 by reversing the lock acquisition order. This way i_mutex_key#4 no longer depends on cpu_hotplug_lock and things are good. Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04lightnvm: fix bad back free on error pathJavier González
Free memory correctly when an allocation fails on a loop and we free backwards previously successful allocations. Signed-off-by: Javier González <javier@cnexlabs.com> Reviewed-by: Matias Bjørling <matias@cnexlabs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-04lightnvm: create cmd before allocating requestJavier González
Create nvme command before allocating a request using nvme_alloc_request, which uses the command direction. Up until now, the command has been zeroized, so all commands have been allocated as a read operation. Signed-off-by: Javier González <javier@cnexlabs.com> Reviewed-by: Matias Bjørling <matias@cnexlabs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-05-03SMB3: Work around mount failure when using SMB3 dialect to MacsSteve French
Macs send the maximum buffer size in response on ioctl to validate negotiate security information, which causes us to fail the mount as the response buffer is larger than the expected response. Changed ioctl response processing to allow for padding of validate negotiate ioctl response and limit the maximum response size to maximum buffer size. Signed-off-by: Steve French <steve.french@primarydata.com> CC: Stable <stable@vger.kernel.org>
2017-05-03Merge tag 'modules-for-v4.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull modules updates from Jessica Yu: - Minor code cleanups - Fix section alignment for .init_array * tag 'modules-for-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: kallsyms: Use bounded strnchr() when parsing string module: Unify the return value type of try_module_get module: set .init_array alignment to 8
2017-05-03Merge tag 'trace-v4.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "New features for this release: - Pretty much a full rewrite of the processing of function plugins. i.e. echo do_IRQ:stacktrace > set_ftrace_filter - The rewrite was needed to add plugins to be unique to tracing instances. i.e. mkdir instance/foo; cd instances/foo; echo do_IRQ:stacktrace > set_ftrace_filter The old way was written very hacky. This removes a lot of those hacks. - New "function-fork" tracing option. When set, pids in the set_ftrace_pid will have their children added when the processes with their pids listed in the set_ftrace_pid file forks. - Exposure of "maxactive" for kretprobe in kprobe_events - Allow for builtin init functions to be traced by the function tracer (via the kernel command line). Module init function tracing will come in the next release. - Added more selftests, and have selftests also test in an instance" * tag 'trace-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (60 commits) ring-buffer: Return reader page back into existing ring buffer selftests: ftrace: Allow some event trigger tests to run in an instance selftests: ftrace: Have some basic tests run in a tracing instance too selftests: ftrace: Have event tests also run in an tracing instance selftests: ftrace: Make func_event_triggers and func_traceonoff_triggers tests do instances selftests: ftrace: Allow some tests to be run in a tracing instance tracing/ftrace: Allow for instances to trigger their own stacktrace probes tracing/ftrace: Allow for the traceonoff probe be unique to instances tracing/ftrace: Enable snapshot function trigger to work with instances tracing/ftrace: Allow instances to have their own function probes tracing/ftrace: Add a better way to pass data via the probe functions ftrace: Dynamically create the probe ftrace_ops for the trace_array tracing: Pass the trace_array into ftrace_probe_ops functions tracing: Have the trace_array hold the list of registered func probes ftrace: If the hash for a probe fails to update then free what was initialized ftrace: Have the function probes call their own function ftrace: Have each function probe use its own ftrace_ops ftrace: Have unregister_ftrace_function_probe_func() return a value ftrace: Add helper function ftrace_hash_move_and_update_ops() ftrace: Remove data field from ftrace_func_probe structure ...
2017-05-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk Pull printk updates from Petr Mladek: - There is a situation when early console is not deregistered because the preferred one matches a wrong entry. It caused messages to appear twice. This is the 2nd attempt to fix it. The first one was wrong, see the commit c6c7d83b9c9e ('Revert "console: don't prefer first registered if DT specifies stdout-path"'). The fix is coupled with some small code clean up. Well, the console registration code would deserve a big one. We need to think about it. - Do not lose information about the preemtive context when the console semaphore is re-taken. - Do not block CPU hotplug when someone else is already pushing messages to the console. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: printk: fix double printing with earlycon printk: rename selected_console -> preferred_console printk: fix name/type/scope of preferred_console var printk: Correctly handle preemption in console_unlock() printk: use console_trylock() in console_cpu_notify()
2017-05-03Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc updates from Andrew Morton: - a few misc things - most of MM - KASAN updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (102 commits) kasan: separate report parts by empty lines kasan: improve double-free report format kasan: print page description after stacks kasan: improve slab object description kasan: change report header kasan: simplify address description logic kasan: change allocation and freeing stack traces headers kasan: unify report headers kasan: introduce helper functions for determining bug type mm: hwpoison: call shake_page() after try_to_unmap() for mlocked page mm: hwpoison: call shake_page() unconditionally mm/swapfile.c: fix swap space leak in error path of swap_free_entries() mm/gup.c: fix access_ok() argument type mm/truncate: avoid pointless cleancache_invalidate_inode() calls. mm/truncate: bail out early from invalidate_inode_pages2_range() if mapping is empty fs/block_dev: always invalidate cleancache in invalidate_bdev() fs: fix data invalidation in the cleancache during direct IO zram: reduce load operation in page_same_filled zram: use zram_free_page instead of open-coded zram: introduce zram data accessor ...
2017-05-03cifs: fix CIFS_IOC_GET_MNT_INFO oopsDavid Disseldorp
An open directory may have a NULL private_data pointer prior to readdir. Fixes: 0de1f4c6f6c0 ("Add way to query server fs info for smb3") Cc: stable@vger.kernel.org Signed-off-by: David Disseldorp <ddiss@suse.de> Signed-off-by: Steve French <smfrench@gmail.com>
2017-05-03CIFS: fix mapping of SFM_SPACE and SFM_PERIODBjörn Jacke
- trailing space maps to 0xF028 - trailing period maps to 0xF029 This fix corrects the mapping of file names which have a trailing character that would otherwise be illegal (period or space) but is allowed by POSIX. Signed-off-by: Bjoern Jacke <bjacke@samba.org> CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <smfrench@gmail.com>
2017-05-03kasan: separate report parts by empty linesAndrey Konovalov
Makes the report easier to read. Link: http://lkml.kernel.org/r/20170302134851.101218-10-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-03kasan: improve double-free report formatAndrey Konovalov
Changes double-free report header from BUG: Double free or freeing an invalid pointer Unexpected shadow byte: 0xFB to BUG: KASAN: double-free or invalid-free in kmalloc_oob_left+0xe5/0xef This makes a bug uniquely identifiable by the first report line. To account for removing of the unexpected shadow value, print shadow bytes at the end of the report as in reports for other kinds of bugs. Link: http://lkml.kernel.org/r/20170302134851.101218-9-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-03kasan: print page description after stacksAndrey Konovalov
Moves page description after the stacks since it's less important. Link: http://lkml.kernel.org/r/20170302134851.101218-8-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-03kasan: improve slab object descriptionAndrey Konovalov
Changes slab object description from: Object at ffff880068388540, in cache kmalloc-128 size: 128 to: The buggy address belongs to the object at ffff880068388540 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 123 bytes inside of 128-byte region [ffff880068388540, ffff8800683885c0) Makes it more explanatory and adds information about relative offset of the accessed address to the start of the object. Link: http://lkml.kernel.org/r/20170302134851.101218-7-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-03kasan: change report headerAndrey Konovalov
Change report header format from: BUG: KASAN: use-after-free in unwind_get_return_address+0x28a/0x2c0 at addr ffff880069437950 Read of size 8 by task insmod/3925 to: BUG: KASAN: use-after-free in unwind_get_return_address+0x28a/0x2c0 Read of size 8 at addr ffff880069437950 by task insmod/3925 The exact access address is not usually important, so move it to the second line. This also makes the header look visually balanced. Link: http://lkml.kernel.org/r/20170302134851.101218-6-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-03kasan: simplify address description logicAndrey Konovalov
Simplify logic for describing a memory address. Add addr_to_page() helper function. Makes the code easier to follow. Link: http://lkml.kernel.org/r/20170302134851.101218-5-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-03kasan: change allocation and freeing stack traces headersAndrey Konovalov
Change stack traces headers from: Allocated: PID = 42 to: Allocated by task 42: Makes the report one line shorter and look better. Link: http://lkml.kernel.org/r/20170302134851.101218-4-andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>