netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. ====================================================== WARNING: possible circular locking dependency detected 5.0.0 #4 Not tainted ------------------------------------------------------ syz-executor.1/32111 is trying to acquire lock: 00000000b1e24020 (&sig->cred_guard_mutex){+.+.}, at: proc_pid_attr_write+0x1fa/0x530 fs/proc/base.c:2569 but task is already holding lock: 000000008d3c7dee (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] 000000008d3c7dee (&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 __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 __do_execve_file.isra.0+0x178d/0x23f0 fs/exec.c:1758 do_execveat_common fs/exec.c:1865 [inline] compat_do_execve fs/exec.c:1909 [inline] __do_compat_sys_execve fs/exec.c:1984 [inline] __se_compat_sys_execve fs/exec.c:1980 [inline] __ia32_compat_sys_execve+0x94/0xc0 fs/exec.c:1980 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x281/0xc98 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 -> #0 (&sig->cred_guard_mutex){+.+.}: 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+0x644/0x1330 fs/splice.c:1152 __do_sys_splice fs/splice.c:1419 [inline] __se_sys_splice fs/splice.c:1399 [inline] __ia32_sys_splice+0x2c4/0x330 fs/splice.c:1399 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x281/0xc98 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&pipe->mutex/1); lock(&sig->cred_guard_mutex); lock(&pipe->mutex/1); lock(&sig->cred_guard_mutex); *** DEADLOCK *** 2 locks held by syz-executor.1/32111: #0: 000000006e93c71c (sb_writers#6){.+.+}, at: file_start_write include/linux/fs.h:2816 [inline] #0: 000000006e93c71c (sb_writers#6){.+.+}, at: do_splice+0xceb/0x1330 fs/splice.c:1151 #1: 000000008d3c7dee (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] #1: 000000008d3c7dee (&pipe->mutex/1){+.+.}, at: pipe_lock+0x6e/0x80 fs/pipe.c:70 stack backtrace: CPU: 0 PID: 32111 Comm: syz-executor.1 Not tainted 5.0.0 #4 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 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+0x644/0x1330 fs/splice.c:1152 __do_sys_splice fs/splice.c:1419 [inline] __se_sys_splice fs/splice.c:1399 [inline] __ia32_sys_splice+0x2c4/0x330 fs/splice.c:1399 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x281/0xc98 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f2d869 Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5d290cc EFLAGS: 00000296 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000010000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop5' (000000000de52f59): kobject_uevent_env kobject: 'loop5' (000000000de52f59): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:55' (00000000cc2d4af4): kobject_uevent_env kobject: '0:55' (00000000cc2d4af4): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:52' (00000000ab06a9b0): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:55' (00000000cc2d4af4): kobject_cleanup, parent (null) kobject: '0:52' (00000000ab06a9b0): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: '0:55' (00000000cc2d4af4): calling ktype release kobject: '0:55': free name kobject: 'loop1' (00000000a2417015): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: '0:52' (00000000ab06a9b0): kobject_cleanup, parent (null) kobject: '0:52' (00000000ab06a9b0): calling ktype release kobject: 'loop0' (00000000105ff833): kobject_uevent_env kobject: '0:55' (00000000a79d3b52): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop0' (00000000105ff833): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: '0:52': free name kobject: '0:55' (00000000a79d3b52): kobject_uevent_env kobject: 'loop1' (00000000a2417015): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:55' (00000000a79d3b52): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:52' (0000000012efa441): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop2' (000000001c66db52): kobject_uevent_env kobject: 'loop2' (000000001c66db52): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:52' (0000000012efa441): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:56' (00000000b704814d): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop5' (000000000de52f59): kobject_uevent_env kobject: '0:52' (0000000012efa441): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: 'loop5' (000000000de52f59): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:56' (00000000b704814d): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:56' (00000000b704814d): fill_kobj_path: path = '/devices/virtual/bdi/0:56' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:52' (0000000012efa441): kobject_uevent_env kobject: '0:52' (0000000012efa441): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: '0:56' (00000000b704814d): kobject_uevent_env kobject: '0:52' (0000000012efa441): kobject_cleanup, parent (null) kobject: '0:52' (0000000012efa441): calling ktype release kobject: '0:52': free name kobject: '0:56' (00000000b704814d): fill_kobj_path: path = '/devices/virtual/bdi/0:56' kobject: 'loop2' (000000001c66db52): kobject_uevent_env kobject: 'loop2' (000000001c66db52): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:56' (00000000b704814d): kobject_cleanup, parent (null) kobject: '0:56' (00000000b704814d): calling ktype release kobject: '0:56': free name kobject: '0:55' (00000000a79d3b52): kobject_uevent_env kobject: '0:55' (00000000a79d3b52): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:55' (00000000a79d3b52): kobject_cleanup, parent (null) kobject: '0:55' (00000000a79d3b52): calling ktype release kobject: '0:55': free name kobject: 'loop0' (00000000105ff833): kobject_uevent_env kobject: 'loop0' (00000000105ff833): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready kobject: 'loop4' (00000000c579ee1e): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop4' (00000000c579ee1e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:52' (000000000e8a8ef7): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:55' (0000000096fd526d): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:55' (0000000096fd526d): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:52' (000000000e8a8ef7): kobject_uevent_env kobject: '0:55' (0000000096fd526d): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:52' (000000000e8a8ef7): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' __nla_parse: 2 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000000de52f59): kobject_uevent_env kobject: 'loop5' (000000000de52f59): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:52' (000000000e8a8ef7): kobject_uevent_env kobject: '0:52' (000000000e8a8ef7): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: '0:55' (0000000096fd526d): kobject_uevent_env kobject: '0:52' (000000000e8a8ef7): kobject_cleanup, parent (null) kobject: '0:55' (0000000096fd526d): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:52' (000000000e8a8ef7): calling ktype release kobject: '0:55' (0000000096fd526d): kobject_cleanup, parent (null) kobject: '0:55' (0000000096fd526d): calling ktype release kobject: '0:52': free name kobject: 'loop2' (000000001c66db52): kobject_uevent_env kobject: 'loop2' (000000001c66db52): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:55': free name kobject: 'loop0' (00000000105ff833): kobject_uevent_env kobject: 'loop0' (00000000105ff833): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000c579ee1e): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop4' (00000000c579ee1e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: '0:52' (00000000f7e9f774): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:55' (0000000089462100): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:52' (00000000f7e9f774): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:55' (0000000089462100): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:52' (00000000f7e9f774): fill_kobj_path: path = '/devices/virtual/bdi/0:52' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: '0:55' (0000000089462100): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:56' (0000000027951210): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:56' (0000000027951210): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:56' (0000000027951210): fill_kobj_path: path = '/devices/virtual/bdi/0:56' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:55' (0000000089462100): kobject_uevent_env kobject: 'loop5' (000000000de52f59): kobject_uevent_env kobject: '0:55' (0000000089462100): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: 'loop5' (000000000de52f59): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:55' (0000000089462100): kobject_cleanup, parent (null) kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: '0:56' (0000000027951210): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:56' (0000000027951210): fill_kobj_path: path = '/devices/virtual/bdi/0:56' kobject: '0:55' (0000000089462100): calling ktype release kobject: '0:55': free name kobject: '0:56' (0000000027951210): kobject_cleanup, parent (null) kobject: 'loop0' (00000000105ff833): kobject_uevent_env kobject: '0:56' (0000000027951210): calling ktype release kobject: '0:56': free name kobject: 'loop0' (00000000105ff833): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: '0:52' (00000000f7e9f774): kobject_uevent_env kobject: '0:52' (00000000f7e9f774): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: '0:52' (00000000f7e9f774): kobject_cleanup, parent (null) kobject: '0:52' (00000000f7e9f774): calling ktype release kobject: '0:52': free name kobject: 'loop2' (000000001c66db52): kobject_uevent_env kobject: 'loop2' (000000001c66db52): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000c579ee1e): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop4' (00000000c579ee1e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:52' (0000000027207705): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:55' (0000000032a27122): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: '0:55' (0000000032a27122): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:55' (0000000032a27122): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:52' (0000000027207705): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:52' (0000000027207705): fill_kobj_path: path = '/devices/virtual/bdi/0:52' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:56' (00000000e5e42b77): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: '0:56' (00000000e5e42b77): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:56' (00000000e5e42b77): fill_kobj_path: path = '/devices/virtual/bdi/0:56' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop5' (000000000de52f59): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000000de52f59): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:56' (00000000e5e42b77): kobject_uevent_env kobject: '0:56' (00000000e5e42b77): fill_kobj_path: path = '/devices/virtual/bdi/0:56' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:56' (00000000e5e42b77): kobject_cleanup, parent (null) kobject: '0:56' (00000000e5e42b77): calling ktype release kobject: '0:56': free name kobject: '0:52' (0000000027207705): kobject_uevent_env kobject: '0:55' (0000000032a27122): kobject_uevent_env kobject: '0:52' (0000000027207705): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: '0:55' (0000000032a27122): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:52' (0000000027207705): kobject_cleanup, parent (null) kobject: '0:55' (0000000032a27122): kobject_cleanup, parent (null) kobject: '0:52' (0000000027207705): calling ktype release kobject: '0:55' (0000000032a27122): calling ktype release kobject: '0:52': free name kobject: '0:55': free name kobject: 'loop2' (000000001c66db52): kobject_uevent_env kobject: 'loop2' (000000001c66db52): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000105ff833): kobject_uevent_env kobject: 'loop0' (00000000105ff833): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000c579ee1e): kobject_uevent_env kobject: 'loop4' (00000000c579ee1e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:52' (00000000d2ace528): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:52' (00000000d2ace528): kobject_uevent_env kobject: '0:55' (00000000c3d65b62): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:52' (00000000d2ace528): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:55' (00000000c3d65b62): kobject_uevent_env kobject: '0:55' (00000000c3d65b62): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000000de52f59): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:52' (00000000d2ace528): kobject_uevent_env kobject: 'loop5' (000000000de52f59): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:52' (00000000d2ace528): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:52' (00000000d2ace528): kobject_cleanup, parent (null) kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:52' (00000000d2ace528): calling ktype release kobject: '0:52': free name kobject: 'loop0' (00000000105ff833): kobject_uevent_env kobject: 'loop0' (00000000105ff833): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: '0:55' (00000000c3d65b62): kobject_uevent_env kobject: '0:55' (00000000c3d65b62): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:55' (00000000c3d65b62): kobject_cleanup, parent (null) kobject: '0:55' (00000000c3d65b62): calling ktype release kobject: '0:55': free name kobject: 'loop2' (000000001c66db52): kobject_uevent_env kobject: 'loop2' (000000001c66db52): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000c579ee1e): kobject_uevent_env kobject: 'loop4' (00000000c579ee1e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:52' (00000000e214d458): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:55' (000000004b8acecf): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:55' (000000004b8acecf): kobject_uevent_env kobject: '0:55' (000000004b8acecf): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:52' (00000000e214d458): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' __nla_parse: 7 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: '0:52' (00000000e214d458): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:56' (00000000207e548b): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:57' (00000000372e2350): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: '0:56' (00000000207e548b): kobject_uevent_env kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000000de52f59): kobject_uevent_env kobject: '0:56' (00000000207e548b): fill_kobj_path: path = '/devices/virtual/bdi/0:56' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'loop5' (000000000de52f59): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '0:57' (00000000372e2350): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: '0:57' (00000000372e2350): fill_kobj_path: path = '/devices/virtual/bdi/0:57' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: '0:56' (00000000207e548b): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: '0:56' (00000000207e548b): fill_kobj_path: path = '/devices/virtual/bdi/0:56' kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '0:56' (00000000207e548b): kobject_cleanup, parent (null) kobject: '0:56' (00000000207e548b): calling ktype release kobject: 'loop1' (00000000a2417015): kobject_uevent_env kobject: '0:56': free name kobject: 'loop1' (00000000a2417015): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:52' (00000000e214d458): kobject_uevent_env kobject: '0:52' (00000000e214d458): fill_kobj_path: path = '/devices/virtual/bdi/0:52' kobject: '0:52' (00000000e214d458): kobject_cleanup, parent (null) kobject: '0:52' (00000000e214d458): calling ktype release kobject: '0:52': free name kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop2' (000000001c66db52): kobject_uevent_env kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (000000001c66db52): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:57' (00000000372e2350): kobject_uevent_env kobject: '0:57' (00000000372e2350): fill_kobj_path: path = '/devices/virtual/bdi/0:57' kobject: '0:57' (00000000372e2350): kobject_cleanup, parent (null) kobject: '0:57' (00000000372e2350): calling ktype release kobject: '0:57': free name kobject: '0:55' (000000004b8acecf): kobject_uevent_env kobject: '0:55' (000000004b8acecf): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: '0:55' (000000004b8acecf): kobject_cleanup, parent (null) kobject: '0:55' (000000004b8acecf): calling ktype release kobject: '0:55': free name kobject: 'loop0' (00000000105ff833): kobject_uevent_env kobject: 'loop0' (00000000105ff833): fill_kobj_path: path = '/devices/virtual/block/loop0' netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: '0:52' (000000009c3186b2): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:55' (00000000808cf5f1): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop4' (00000000c579ee1e): kobject_uevent_env kobject: '0:55' (00000000808cf5f1): kobject_uevent_env kobject: '0:55' (00000000808cf5f1): fill_kobj_path: path = '/devices/virtual/bdi/0:55' kobject: 'kvm' (0000000062f8ae09): kobject_uevent_env kobject: 'loop4' (00000000c579ee1e): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000dc633aeb): kobject_uevent_env kobject: '0:52' (000000009c3186b2): kobject_uevent_env netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. kobject: 'kvm' (0000000062f8ae09): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000dc633aeb): fill_kobj_path: path = '/devices/virtual/block/loop3'