====================================================== kobject: 'nr0' (0000000063d6d906): kobject_add_internal: parent: 'net', set: 'devices' WARNING: possible circular locking dependency detected 5.0.0+ #6 Not tainted kobject: 'nr0' (0000000063d6d906): kobject_uevent_env ------------------------------------------------------ syz-executor.2/29696 is trying to acquire lock: 00000000baa60392 (&sig->cred_guard_mutex){+.+.}, at: proc_pid_attr_write+0x1fa/0x530 fs/proc/base.c:2569 kobject: 'nr0' (0000000063d6d906): fill_kobj_path: path = '/devices/virtual/net/nr0' but task is already holding lock: 00000000c117cc36 (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] 00000000c117cc36 (&pipe->mutex/1){+.+.}, at: pipe_lock+0x6e/0x80 fs/pipe.c:70 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&pipe->mutex/1){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'queues' (0000000008a11a48): kobject_add_internal: parent: 'nr0', set: '' __pipe_lock fs/pipe.c:83 [inline] fifo_open+0x159/0xb00 fs/pipe.c:905 do_dentry_open+0x47d/0x1130 fs/open.c:771 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x10d7/0x4690 fs/namei.c:3534 do_filp_open+0x1a1/0x280 fs/namei.c:3564 do_open_execat+0x13b/0x6d0 fs/exec.c:856 kobject: 'queues' (0000000008a11a48): kobject_uevent_env __do_execve_file.isra.0+0x178d/0x23f0 fs/exec.c:1758 do_execveat_common fs/exec.c:1865 [inline] do_execve fs/exec.c:1882 [inline] __do_sys_execve fs/exec.c:1963 [inline] __se_sys_execve fs/exec.c:1958 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&sig->cred_guard_mutex){+.+.}: kobject: 'queues' (0000000008a11a48): kobject_uevent_env: filter function caused the event to drop! lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1310 kernel/locking/mutex.c:1072 mutex_lock_interruptible_nested+0x16/0x20 kernel/locking/mutex.c:1109 proc_pid_attr_write+0x1fa/0x530 fs/proc/base.c:2569 __vfs_write+0x116/0x8e0 fs/read_write.c:485 __kernel_write+0x110/0x3b0 fs/read_write.c:506 write_pipe_buf+0x15d/0x1f0 fs/splice.c:797 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 kobject: 'rx-0' (00000000d076d7b4): kobject_add_internal: parent: 'queues', set: 'queues' splice_from_pipe+0x108/0x170 fs/splice.c:662 default_file_splice_write+0x3c/0x90 fs/splice.c:809 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 kobject: 'rx-0' (00000000d076d7b4): kobject_uevent_env __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'rx-0' (00000000d076d7b4): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/rx-0' other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&pipe->mutex/1); kobject: 'tx-0' (00000000c249b71c): kobject_add_internal: parent: 'queues', set: 'queues' lock(&sig->cred_guard_mutex); lock(&pipe->mutex/1); lock(&sig->cred_guard_mutex); *** DEADLOCK *** 2 locks held by syz-executor.2/29696: #0: 000000002f5f54eb (sb_writers#6){.+.+}, at: file_start_write include/linux/fs.h:2822 [inline] #0: 000000002f5f54eb (sb_writers#6){.+.+}, at: do_splice+0xdf9/0x1490 fs/splice.c:1157 #1: 00000000c117cc36 (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] #1: 00000000c117cc36 (&pipe->mutex/1){+.+.}, at: pipe_lock+0x6e/0x80 fs/pipe.c:70 kobject: 'tx-0' (00000000c249b71c): kobject_uevent_env stack backtrace: CPU: 0 PID: 29696 Comm: syz-executor.2 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1224 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2350 [inline] __lock_acquire+0x2f00/0x4700 kernel/locking/lockdep.c:3338 kobject: 'tx-0' (00000000c249b71c): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/tx-0' kobject: 'batman_adv' (0000000053f41a16): kobject_add_internal: parent: 'nr0', set: '' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1310 kernel/locking/mutex.c:1072 mutex_lock_interruptible_nested+0x16/0x20 kernel/locking/mutex.c:1109 proc_pid_attr_write+0x1fa/0x530 fs/proc/base.c:2569 __vfs_write+0x116/0x8e0 fs/read_write.c:485 __kernel_write+0x110/0x3b0 fs/read_write.c:506 write_pipe_buf+0x15d/0x1f0 fs/splice.c:797 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 default_file_splice_write+0x3c/0x90 fs/splice.c:809 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7b371ddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 0000000000010005 R09: 0a00000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7b371de6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 00000000ffffffff kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (000000003311922a): kobject_uevent_env CPU: 0 PID: 29720 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3295 [inline] kmem_cache_alloc_node_trace+0x270/0x720 mm/slab.c:3655 __do_kmalloc_node mm/slab.c:3677 [inline] __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3692 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:140 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:208 alloc_skb include/linux/skbuff.h:1011 [inline] __ip_append_data.isra.0+0x24d6/0x2dd0 net/ipv4/ip_output.c:1005 kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000233ed60c): kobject_uevent_env ip_append_data.part.0+0xf2/0x170 net/ipv4/ip_output.c:1220 ip_append_data+0x6e/0x90 net/ipv4/ip_output.c:1209 raw_sendmsg+0xbd8/0x2f10 net/ipv4/raw.c:670 kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'batman_adv' (0000000053f41a16): kobject_uevent_env kobject: 'batman_adv' (0000000053f41a16): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (0000000053f41a16): kobject_cleanup, parent (null) kobject: 'batman_adv' (0000000053f41a16): calling ktype release kobject: (0000000053f41a16): dynamic_kobj_release kobject: 'batman_adv': free name kobject: 'rx-0' (00000000d076d7b4): kobject_cleanup, parent 0000000008a11a48 kobject: 'rx-0' (00000000d076d7b4): auto cleanup 'remove' event kobject: 'rx-0' (00000000d076d7b4): kobject_uevent_env kobject: 'rx-0' (00000000d076d7b4): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/rx-0' kobject: 'rx-0' (00000000d076d7b4): auto cleanup kobject_del kobject: 'rx-0' (00000000d076d7b4): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000c249b71c): kobject_cleanup, parent 0000000008a11a48 kobject: 'tx-0' (00000000c249b71c): auto cleanup 'remove' event kobject: 'tx-0' (00000000c249b71c): kobject_uevent_env kobject: 'tx-0' (00000000c249b71c): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/tx-0' kobject: 'tx-0' (00000000c249b71c): auto cleanup kobject_del kobject: 'tx-0' (00000000c249b71c): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (0000000008a11a48): kobject_cleanup, parent (null) kobject: 'queues' (0000000008a11a48): calling ktype release kobject: 'queues' (0000000008a11a48): kset_release kobject: 'queues': free name kobject: 'nr0' (0000000063d6d906): kobject_uevent_env kobject: 'nr0' (0000000063d6d906): fill_kobj_path: path = '/devices/virtual/net/nr0' kobject: 'nr0' (0000000063d6d906): kobject_cleanup, parent (null) kobject: 'nr0' (0000000063d6d906): calling ktype release kobject: 'nr0': free name kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000003311922a): kobject_uevent_env FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 29756 Comm: syz-executor.0 Not tainted 5.0.0+ #6 kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' __should_fail_alloc_page mm/page_alloc.c:3164 [inline] should_fail_alloc_page+0x50/0x60 mm/page_alloc.c:3211 prepare_alloc_pages mm/page_alloc.c:4488 [inline] __alloc_pages_nodemask+0x1a1/0x710 mm/page_alloc.c:4535 kobject: 'loop4' (000000003311922a): kobject_uevent_env __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1398 [inline] cache_grow_begin+0x9c/0x8c0 mm/slab.c:2667 kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' cache_alloc_refill mm/slab.c:3040 [inline] ____cache_alloc mm/slab.c:3123 [inline] ____cache_alloc mm/slab.c:3106 [inline] slab_alloc_node mm/slab.c:3318 [inline] kmem_cache_alloc_node_trace+0x658/0x720 mm/slab.c:3655 __do_kmalloc_node mm/slab.c:3677 [inline] __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3692 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:140 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:208 alloc_skb include/linux/skbuff.h:1011 [inline] __ip_append_data.isra.0+0x24d6/0x2dd0 net/ipv4/ip_output.c:1005 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env ip_append_data.part.0+0xf2/0x170 net/ipv4/ip_output.c:1220 ip_append_data+0x6e/0x90 net/ipv4/ip_output.c:1209 raw_sendmsg+0xbd8/0x2f10 net/ipv4/raw.c:670 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 kobject: 'loop1' (00000000931e812b): kobject_uevent_env inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' IPVS: set_ctl: invalid protocol: 51 172.20.20.42:20002 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 29812 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3374 [inline] kmem_cache_alloc+0x47/0x6f0 mm/slab.c:3548 dst_alloc+0x10e/0x1d0 net/core/dst.c:105 rt_dst_alloc+0x83/0x3f0 net/ipv4/route.c:1569 __mkroute_output net/ipv4/route.c:2268 [inline] ip_route_output_key_hash_rcu+0x97d/0x30e0 net/ipv4/route.c:2495 ip_route_output_key_hash+0x212/0x380 net/ipv4/route.c:2324 __ip_route_output_key include/net/route.h:124 [inline] ip_route_output_flow+0x28/0xc0 net/ipv4/route.c:2579 raw_sendmsg+0xa10/0x2f10 net/ipv4/raw.c:647 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' net_ratelimit: 81 callbacks suppressed neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop4' (000000003311922a): kobject_uevent_env neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' IPVS: set_ctl: invalid protocol: 51 172.20.20.42:20002 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' CPU: 0 PID: 29852 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3295 [inline] kmem_cache_alloc_node+0x264/0x710 mm/slab.c:3637 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:196 alloc_skb include/linux/skbuff.h:1011 [inline] __ip_append_data.isra.0+0x24d6/0x2dd0 net/ipv4/ip_output.c:1005 ip_append_data.part.0+0xf2/0x170 net/ipv4/ip_output.c:1220 ip_append_data+0x6e/0x90 net/ipv4/ip_output.c:1209 raw_sendmsg+0xbd8/0x2f10 net/ipv4/raw.c:670 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' CPU: 1 PID: 29897 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env __should_failslab+0x121/0x190 mm/failslab.c:32 kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3295 [inline] kmem_cache_alloc_node+0x56/0x710 mm/slab.c:3637 kobject: 'loop4' (000000003311922a): kobject_uevent_env __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:196 alloc_skb include/linux/skbuff.h:1011 [inline] ip_do_fragment+0x9e4/0x2520 net/ipv4/ip_output.c:743 kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' ip_fragment.constprop.0+0x176/0x240 net/ipv4/ip_output.c:550 ip_finish_output+0x5fd/0xd50 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip_mc_output+0x292/0xf70 net/ipv4/ip_output.c:390 dst_output include/net/dst.h:444 [inline] ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124 ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465 ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485 raw_sendmsg+0x1e5d/0x2f10 net/ipv4/raw.c:676 kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 29944 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3295 [inline] kmem_cache_alloc_node_trace+0x270/0x720 mm/slab.c:3655 __do_kmalloc_node mm/slab.c:3677 [inline] __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3692 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:140 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:208 alloc_skb include/linux/skbuff.h:1011 [inline] __ip_append_data.isra.0+0x24d6/0x2dd0 net/ipv4/ip_output.c:1005 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' ip_append_data.part.0+0xf2/0x170 net/ipv4/ip_output.c:1220 ip_append_data+0x6e/0x90 net/ipv4/ip_output.c:1209 raw_sendmsg+0xbd8/0x2f10 net/ipv4/raw.c:670 kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000003311922a): kobject_uevent_env inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 29994 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3295 [inline] kmem_cache_alloc_node_trace+0x270/0x720 mm/slab.c:3655 __do_kmalloc_node mm/slab.c:3677 [inline] __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3692 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:140 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:208 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env alloc_skb include/linux/skbuff.h:1011 [inline] __ip_append_data.isra.0+0x24d6/0x2dd0 net/ipv4/ip_output.c:1005 kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' ip_append_data.part.0+0xf2/0x170 net/ipv4/ip_output.c:1220 ip_append_data+0x6e/0x90 net/ipv4/ip_output.c:1209 raw_sendmsg+0xbd8/0x2f10 net/ipv4/raw.c:670 kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 kobject: 'loop4' (000000003311922a): kobject_uevent_env sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 30042 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3295 [inline] kmem_cache_alloc_node_trace+0x270/0x720 mm/slab.c:3655 __do_kmalloc_node mm/slab.c:3677 [inline] __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3692 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:140 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:208 alloc_skb include/linux/skbuff.h:1011 [inline] __ip_append_data.isra.0+0x24d6/0x2dd0 net/ipv4/ip_output.c:1005 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env ip_append_data.part.0+0xf2/0x170 net/ipv4/ip_output.c:1220 kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' ip_append_data+0x6e/0x90 net/ipv4/ip_output.c:1209 raw_sendmsg+0xbd8/0x2f10 net/ipv4/raw.c:670 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 kobject: 'loop1' (00000000931e812b): kobject_uevent_env sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 30089 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3374 [inline] kmem_cache_alloc+0x47/0x6f0 mm/slab.c:3548 skb_clone+0x150/0x3b0 net/core/skbuff.c:1289 ip_mc_output+0x3aa/0xf70 net/ipv4/ip_output.c:367 dst_output include/net/dst.h:444 [inline] ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124 ip_send_skb+0x42/0xf0 net/ipv4/ip_output.c:1465 ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1485 raw_sendmsg+0x1e5d/0x2f10 net/ipv4/raw.c:676 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 kobject: 'loop4' (000000003311922a): kobject_uevent_env splice_from_pipe+0x108/0x170 fs/splice.c:662 kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 kobject: 'loop1' (00000000931e812b): kobject_uevent_env __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' net_ratelimit: 96 callbacks suppressed neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop4' (000000003311922a): kobject_uevent_env neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' neighbour: ndisc_cache: neighbor table overflow! kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 30140 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3374 [inline] kmem_cache_alloc+0x47/0x6f0 mm/slab.c:3548 dst_alloc+0x10e/0x1d0 net/core/dst.c:105 rt_dst_alloc+0x83/0x3f0 net/ipv4/route.c:1569 __mkroute_output net/ipv4/route.c:2268 [inline] ip_route_output_key_hash_rcu+0x97d/0x30e0 net/ipv4/route.c:2495 ip_route_output_key_hash+0x212/0x380 net/ipv4/route.c:2324 __ip_route_output_key include/net/route.h:124 [inline] ip_route_output_flow+0x28/0xc0 net/ipv4/route.c:2579 raw_sendmsg+0xa10/0x2f10 net/ipv4/raw.c:647 kobject: 'loop2' (00000000233ed60c): kobject_uevent_env kobject: 'loop2' (00000000233ed60c): fill_kobj_path: path = '/devices/virtual/block/loop2' inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2baa4adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f2baa4adc90 RCX: 0000000000457e29 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bfa0 R08: 00000000000100e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2baa4ae6d4 R13: 00000000004c6c75 R14: 00000000004db870 R15: 0000000000000007 kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000001e5b6c67): kobject_uevent_env kobject: 'loop5' (000000001e5b6c67): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000a034939f): kobject_uevent_env kobject: 'loop0' (00000000a034939f): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000003311922a): kobject_uevent_env kobject: 'loop4' (000000003311922a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000931e812b): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (00000000931e812b): fill_kobj_path: path = '/devices/virtual/block/loop1' CPU: 1 PID: 30185 Comm: syz-executor.0 Not tainted 5.0.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0x1b lib/fault-inject.c:149 __should_failslab+0x121/0x190 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1604 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3295 [inline] kmem_cache_alloc_node_trace+0x270/0x720 mm/slab.c:3655 __do_kmalloc_node mm/slab.c:3677 [inline] __kmalloc_node_track_caller+0x3d/0x70 mm/slab.c:3692 __kmalloc_reserve.isra.0+0x40/0xf0 net/core/skbuff.c:140 __alloc_skb+0x10b/0x5e0 net/core/skbuff.c:208 alloc_skb include/linux/skbuff.h:1011 [inline] __ip_append_data.isra.0+0x24d6/0x2dd0 net/ipv4/ip_output.c:1005 ip_append_data.part.0+0xf2/0x170 net/ipv4/ip_output.c:1220 ip_append_data+0x6e/0x90 net/ipv4/ip_output.c:1209 raw_sendmsg+0xbd8/0x2f10 net/ipv4/raw.c:670 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 kernel_sendmsg+0x44/0x50 net/socket.c:640 sock_no_sendpage+0x116/0x150 net/core/sock.c:2587 inet_sendpage+0x44a/0x630 net/ipv4/af_inet.c:816 kernel_sendpage+0x95/0xf0 net/socket.c:3405 sock_sendpage+0x8b/0xc0 net/socket.c:847 pipe_to_sendpage+0x299/0x370 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x39a/0x7e0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice+0x70a/0x1490 fs/splice.c:1158 __do_sys_splice fs/splice.c:1428 [inline] __se_sys_splice fs/splice.c:1408 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1408 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00