====================================================== WARNING: possible circular locking dependency detected 4.15.0-rc3+ #217 Not tainted ------------------------------------------------------ syz-executor5/19823 is trying to acquire lock: (&sb->s_type->i_mutex_key#10){++++}, at: [<000000000e267168>] inode_lock include/linux/fs.h:713 [inline] (&sb->s_type->i_mutex_key#10){++++}, at: [<000000000e267168>] generic_file_write_iter+0xdc/0x7a0 mm/filemap.c:3289 but task is already holding lock: (&pipe->mutex/1){+.+.}, at: [<000000001edaea64>] pipe_lock_nested fs/pipe.c:67 [inline] (&pipe->mutex/1){+.+.}, at: [<000000001edaea64>] pipe_lock fs/pipe.c:75 [inline] (&pipe->mutex/1){+.+.}, at: [<000000001edaea64>] pipe_wait+0x1e6/0x280 fs/pipe.c:123 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&pipe->mutex/1){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 pipe_lock_nested fs/pipe.c:67 [inline] pipe_lock+0x56/0x70 fs/pipe.c:75 iter_file_splice_write+0x264/0xf30 fs/splice.c:699 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 -> #5 (sb_writers){.+.+}: spin_lock include/linux/spinlock.h:315 [inline] devtmpfsd+0x224/0x4b0 drivers/base/devtmpfs.c:392 kthread+0x37a/0x440 kernel/kthread.c:238 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441 0xffffffffffffffff vfs_unlink+0x36e/0x480 fs/namei.c:3991 -> #4 ((completion)&req.done){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 complete_acquire include/linux/completion.h:40 [inline] __wait_for_common kernel/sched/completion.c:109 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0xcb/0x7b0 kernel/sched/completion.c:144 devtmpfs_create_node+0x32b/0x4a0 drivers/base/devtmpfs.c:115 device_add+0x120f/0x1640 drivers/base/core.c:1824 device_create_groups_vargs+0x1f3/0x250 drivers/base/core.c:2430 device_create_vargs drivers/base/core.c:2470 [inline] device_create+0xda/0x110 drivers/base/core.c:2506 msr_device_create+0x26/0x40 arch/x86/kernel/msr.c:188 cpuhp_invoke_callback+0x2ea/0x1d20 kernel/cpu.c:182 cpuhp_thread_fun+0x48e/0x7e0 kernel/cpu.c:571 smpboot_thread_fn+0x450/0x7c0 kernel/smpboot.c:164 kthread+0x37a/0x440 kernel/kthread.c:238 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:441 -> #3 (cpuhp_state-up){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 cpuhp_lock_acquire kernel/cpu.c:85 [inline] cpuhp_invoke_ap_callback kernel/cpu.c:605 [inline] cpuhp_issue_call+0x1e5/0x520 kernel/cpu.c:1495 __cpuhp_setup_state_cpuslocked+0x282/0x600 kernel/cpu.c:1642 __cpuhp_setup_state+0xb0/0x140 kernel/cpu.c:1671 cpuhp_setup_state include/linux/cpuhotplug.h:201 [inline] page_writeback_init+0x4d/0x71 mm/page-writeback.c:2081 pagecache_init+0x48/0x4f mm/filemap.c:977 start_kernel+0x6bc/0x74f init/main.c:690 x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378 x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237 -> #2 (cpuhp_state_mutex){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 __cpuhp_setup_state_cpuslocked+0x5b/0x600 kernel/cpu.c:1617 __cpuhp_setup_state+0xb0/0x140 kernel/cpu.c:1671 cpuhp_setup_state_nocalls include/linux/cpuhotplug.h:229 [inline] kvm_guest_init+0x1f3/0x20f arch/x86/kernel/kvm.c:528 setup_arch+0x17e8/0x1a02 arch/x86/kernel/setup.c:1266 start_kernel+0xa5/0x74f init/main.c:530 x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378 x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237 -> #1 (cpu_hotplug_lock.rw_sem){++++}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] cpus_read_lock+0x42/0x90 kernel/cpu.c:293 get_online_cpus include/linux/cpu.h:117 [inline] lru_add_drain_all+0xe/0x20 mm/swap.c:729 shmem_wait_for_pins mm/shmem.c:2672 [inline] shmem_add_seals+0x3df/0x1060 mm/shmem.c:2780 shmem_fcntl+0xfe/0x130 mm/shmem.c:2815 do_fcntl+0x73e/0x1160 fs/fcntl.c:421 SYSC_fcntl fs/fcntl.c:463 [inline] SyS_fcntl+0xdc/0x120 fs/fcntl.c:448 do_syscall_64+0x26c/0x920 arch/x86/entry/common.c:285 return_from_SYSCALL_64+0x0/0x75 -> #0 (&sb->s_type->i_mutex_key#10){++++}: check_prevs_add kernel/locking/lockdep.c:2031 [inline] validate_chain kernel/locking/lockdep.c:2473 [inline] __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 down_write+0x87/0x120 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:713 [inline] generic_file_write_iter+0xdc/0x7a0 mm/filemap.c:3289 call_write_iter include/linux/fs.h:1772 [inline] do_iter_readv_writev+0x531/0x7f0 fs/read_write.c:653 do_iter_write+0x15a/0x540 fs/read_write.c:932 vfs_iter_write+0x77/0xb0 fs/read_write.c:945 iter_file_splice_write+0x7db/0xf30 fs/splice.c:749 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 other info that might help us debug this: Chain exists of: &sb->s_type->i_mutex_key#10 --> sb_writers --> &pipe->mutex/1 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&pipe->mutex/1); lock(sb_writers); lock(&pipe->mutex/1); lock(&sb->s_type->i_mutex_key#10); *** DEADLOCK *** 2 locks held by syz-executor5/19823: #0: (sb_writers#6){.+.+}, at: [<00000000ca67cdb3>] file_start_write include/linux/fs.h:2715 [inline] #0: (sb_writers#6){.+.+}, at: [<00000000ca67cdb3>] do_splice fs/splice.c:1146 [inline] #0: (sb_writers#6){.+.+}, at: [<00000000ca67cdb3>] SYSC_splice fs/splice.c:1402 [inline] #0: (sb_writers#6){.+.+}, at: [<00000000ca67cdb3>] SyS_splice+0x1117/0x1630 fs/splice.c:1382 #1: (&pipe->mutex/1){+.+.}, at: [<000000001edaea64>] pipe_lock_nested fs/pipe.c:67 [inline] #1: (&pipe->mutex/1){+.+.}, at: [<000000001edaea64>] pipe_lock fs/pipe.c:75 [inline] #1: (&pipe->mutex/1){+.+.}, at: [<000000001edaea64>] pipe_wait+0x1e6/0x280 fs/pipe.c:123 stack backtrace: CPU: 1 PID: 19823 Comm: syz-executor5 Not tainted 4.15.0-rc3+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_circular_bug+0x42d/0x610 kernel/locking/lockdep.c:1271 check_prev_add+0x666/0x15f0 kernel/locking/lockdep.c:1914 check_prevs_add kernel/locking/lockdep.c:2031 [inline] validate_chain kernel/locking/lockdep.c:2473 [inline] __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 down_write+0x87/0x120 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:713 [inline] generic_file_write_iter+0xdc/0x7a0 mm/filemap.c:3289 call_write_iter include/linux/fs.h:1772 [inline] do_iter_readv_writev+0x531/0x7f0 fs/read_write.c:653 do_iter_write+0x15a/0x540 fs/read_write.c:932 vfs_iter_write+0x77/0xb0 fs/read_write.c:945 iter_file_splice_write+0x7db/0xf30 fs/splice.c:749 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f391ec2ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f391ec2f700 RCX: 0000000000452a39 RDX: 0000000000000017 RSI: 0000000000000000 RDI: 0000000000000018 RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a6f7ff R14: 00007f391ec2f9c0 R15: 0000000000000000 netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19853 comm=syz-executor1 device gre0 entered promiscuous mode : renamed from lo QAT: Device 0 not found kauditd_printk_skb: 24 callbacks suppressed audit: type=1326 audit(1512980008.653:2078): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20041 comm="syz-executor1" exe="/root/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0xffff0000 audit: type=1400 audit(1512980008.653:2079): avc: denied { map } for pid=20049 comm="syz-executor6" path="/dev/hwrng" dev="devtmpfs" ino=1161 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:random_device_t:s0 tclass=chr_file permissive=1 audit: type=1326 audit(1512980008.789:2080): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20041 comm="syz-executor1" exe="/root/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452a39 code=0xffff0000 device gre0 entered promiscuous mode netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 20443 Comm: syz-executor7 Not tainted 4.15.0-rc3+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3371 [inline] __do_kmalloc mm/slab.c:3709 [inline] __kmalloc+0x63/0x760 mm/slab.c:3720 kmalloc include/linux/slab.h:504 [inline] sock_kmalloc+0x112/0x190 net/core/sock.c:1979 af_alg_alloc_areq+0x74/0x2f0 crypto/af_alg.c:1095 _aead_recvmsg crypto/algif_aead.c:152 [inline] aead_recvmsg+0x443/0x1bc0 crypto/algif_aead.c:329 sock_recvmsg_nosec net/socket.c:809 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:816 ___sys_recvmsg+0x29b/0x630 net/socket.c:2185 __sys_recvmsg+0xe2/0x210 net/socket.c:2230 SYSC_recvmsg net/socket.c:2242 [inline] SyS_recvmsg+0x2d/0x50 net/socket.c:2237 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007ff552b38c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007ff552b38aa0 RCX: 0000000000452a39 RDX: 0000000000000002 RSI: 000000002022efc8 RDI: 0000000000000014 RBP: 00007ff552b38a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b75fb R13: 00007ff552b38bc8 R14: 00000000004b75fb R15: 0000000000000000 netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 20759 Comm: syz-executor3 Not tainted 4.15.0-rc3+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3292 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3635 create_task_io_context+0xba/0x540 block/blk-ioc.c:271 get_task_io_context+0xdc/0x100 block/blk-ioc.c:335 set_task_ioprio+0x35d/0x4c0 block/ioprio.c:54 SYSC_ioprio_set block/ioprio.c:133 [inline] SyS_ioprio_set+0x77c/0xe10 block/ioprio.c:64 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f7772d40c58 EFLAGS: 00000212 ORIG_RAX: 00000000000000fb RAX: ffffffffffffffda RBX: 00007f7772d40aa0 RCX: 0000000000452a39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f7772d40a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b75fb R13: 00007f7772d40bc8 R14: 00000000004b75fb R15: 0000000000000000 encrypted_key: master key parameter 'oå‰& µ?^Û' is invalid encrypted_key: master key parameter 'oå‰& µ?^Û' is invalid QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 21718 Comm: syz-executor1 Not tainted 4.15.0-rc3+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3371 [inline] kmem_cache_alloc_trace+0x4b/0x750 mm/slab.c:3611 kmalloc include/linux/slab.h:499 [inline] kzalloc include/linux/slab.h:688 [inline] alloc_pipe_info+0xb1/0x350 fs/pipe.c:628 splice_direct_to_actor+0x650/0x820 fs/splice.c:920 do_splice_direct+0x2a7/0x3d0 fs/splice.c:1061 do_sendfile+0x5d5/0xe90 fs/read_write.c:1413 SYSC_sendfile64 fs/read_write.c:1468 [inline] SyS_sendfile64+0xbd/0x160 fs/read_write.c:1460 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f8d8b83fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f8d8b83faa0 RCX: 0000000000452a39 RDX: 0000000020d49000 RSI: 0000000000000014 RDI: 0000000000000014 RBP: 00007f8d8b83fa90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000040200 R11: 0000000000000212 R12: 00000000004b75fb R13: 00007f8d8b83fbc8 R14: 00000000004b75fb R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 21786 Comm: syz-executor1 Not tainted 4.15.0-rc3+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3371 [inline] __do_kmalloc mm/slab.c:3709 [inline] __kmalloc+0x63/0x760 mm/slab.c:3720 kmalloc_array include/linux/slab.h:618 [inline] kcalloc include/linux/slab.h:629 [inline] alloc_pipe_info+0x135/0x350 fs/pipe.c:645 splice_direct_to_actor+0x650/0x820 fs/splice.c:920 do_splice_direct+0x2a7/0x3d0 fs/splice.c:1061 do_sendfile+0x5d5/0xe90 fs/read_write.c:1413 SYSC_sendfile64 fs/read_write.c:1468 [inline] SyS_sendfile64+0xbd/0x160 fs/read_write.c:1460 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f8d8b83fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f8d8b83faa0 RCX: 0000000000452a39 RDX: 0000000020d49000 RSI: 0000000000000014 RDI: 0000000000000014 RBP: 00007f8d8b83fa90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000040200 R11: 0000000000000212 R12: 00000000004b75fb R13: 00007f8d8b83fbc8 R14: 00000000004b75fb R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 21811 Comm: syz-executor1 Not tainted 4.15.0-rc3+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3371 [inline] __do_kmalloc mm/slab.c:3709 [inline] __kmalloc+0x63/0x760 mm/slab.c:3720 kmalloc include/linux/slab.h:504 [inline] __blkdev_direct_IO_simple+0x274/0xef0 fs/block_dev.c:208 blkdev_direct_IO+0xc8a/0x1000 fs/block_dev.c:428 generic_file_read_iter+0x4d2/0x28f0 mm/filemap.c:2344 blkdev_read_iter+0x105/0x170 fs/block_dev.c:1913 call_read_iter include/linux/fs.h:1766 [inline] generic_file_splice_read+0x3ff/0x7c0 fs/splice.c:307 do_splice_to+0x110/0x170 fs/splice.c:880 splice_direct_to_actor+0x242/0x820 fs/splice.c:952 do_splice_direct+0x2a7/0x3d0 fs/splice.c:1061 do_sendfile+0x5d5/0xe90 fs/read_write.c:1413 SYSC_sendfile64 fs/read_write.c:1468 [inline] SyS_sendfile64+0xbd/0x160 fs/read_write.c:1460 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f8d8b83fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f8d8b83faa0 RCX: 0000000000452a39 RDX: 0000000020d49000 RSI: 0000000000000014 RDI: 0000000000000014 RBP: 00007f8d8b83fa90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000040200 R11: 0000000000000212 R12: 00000000004b75fb R13: 00007f8d8b83fbc8 R14: 00000000004b75fb R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 21855 Comm: syz-executor1 Not tainted 4.15.0-rc3+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3292 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3635 create_task_io_context+0xba/0x540 block/blk-ioc.c:271 create_io_context block/blk.h:291 [inline] generic_make_request_checks+0x167d/0x1da0 block/blk-core.c:2199 generic_make_request+0xaa/0xe20 block/blk-core.c:2257 submit_bio+0x18b/0x560 block/blk-core.c:2411 __blkdev_direct_IO_simple+0x5bf/0xef0 fs/block_dev.c:234 blkdev_direct_IO+0xc8a/0x1000 fs/block_dev.c:428 generic_file_read_iter+0x4d2/0x28f0 mm/filemap.c:2344 blkdev_read_iter+0x105/0x170 fs/block_dev.c:1913 call_read_iter include/linux/fs.h:1766 [inline] generic_file_splice_read+0x3ff/0x7c0 fs/splice.c:307 do_splice_to+0x110/0x170 fs/splice.c:880 splice_direct_to_actor+0x242/0x820 fs/splice.c:952 do_splice_direct+0x2a7/0x3d0 fs/splice.c:1061 do_sendfile+0x5d5/0xe90 fs/read_write.c:1413 SYSC_sendfile64 fs/read_write.c:1468 [inline] SyS_sendfile64+0xbd/0x160 fs/read_write.c:1460 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a39 RSP: 002b:00007f8d8b83fc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f8d8b83faa0 RCX: 0000000000452a39 RDX: 0000000020d49000 RSI: 0000000000000014 RDI: 0000000000000014 RBP: 00007f8d8b83fa90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000040200 R11: 0000000000000212 R12: 00000000004b75fb R13: 00007f8d8b83fbc8 R14: 00000000004b75fb R15: 0000000000000000