====================================================== WARNING: possible circular locking dependency detected 4.20.0-rc3+ #124 Not tainted kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env ------------------------------------------------------ syz-executor5/21254 is trying to acquire lock: 0000000013d64a0d (event_mutex){+.+.}, at: perf_trace_destroy+0x28/0x100 kernel/trace/trace_event_perf.c:236 but task is already holding lock: 00000000fc1e6810 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x1b5/0x2c0 mm/util.c:348 kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&mm->mmap_sem){++++}: down_write_killable+0x8d/0x150 kernel/locking/rwsem.c:84 kobject: 'þ€' (000000002ddab27f): kobject_uevent_env dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1318 [inline] copy_mm kernel/fork.c:1373 [inline] copy_process+0x367a/0x87a0 kernel/fork.c:1917 _do_fork+0x1cb/0x11d0 kernel/fork.c:2216 __do_sys_clone kernel/fork.c:2323 [inline] __se_sys_clone kernel/fork.c:2317 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2317 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (&dup_mmap_sem){++++}: down_write+0x8a/0x130 kernel/locking/rwsem.c:70 percpu_down_write+0xaf/0x540 kernel/locking/percpu-rwsem.c:145 kobject: 'þ€' (000000002ddab27f): fill_kobj_path: path = '/devices/virtual/net/þ€' register_for_each_vma+0xa0/0xee0 kernel/events/uprobes.c:1010 __uprobe_register+0x513/0x880 kernel/events/uprobes.c:1142 uprobe_register+0x27/0x30 kernel/events/uprobes.c:1157 probe_event_enable+0x64a/0xee0 kernel/trace/trace_uprobe.c:944 trace_uprobe_register+0x4c9/0xcf0 kernel/trace/trace_uprobe.c:1220 perf_trace_event_reg kernel/trace/trace_event_perf.c:124 [inline] perf_trace_event_init+0x50b/0x990 kernel/trace/trace_event_perf.c:199 perf_uprobe_init+0x1f1/0x280 kernel/trace/trace_event_perf.c:329 perf_uprobe_event_init+0x106/0x1a0 kernel/events/core.c:8503 kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9770 perf_init_event kernel/events/core.c:9801 [inline] perf_event_alloc.part.94+0x1d54/0x3740 kernel/events/core.c:10074 kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' perf_event_alloc kernel/events/core.c:10430 [inline] __do_sys_perf_event_open+0xada/0x3020 kernel/events/core.c:10531 __se_sys_perf_event_open kernel/events/core.c:10420 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10420 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'queues' (000000004ec93bc4): kobject_add_internal: parent: 'þ€', set: '' -> #1 (&uprobe->register_rwsem){+.+.}: down_write+0x8a/0x130 kernel/locking/rwsem.c:70 __uprobe_register+0x471/0x880 kernel/events/uprobes.c:1138 uprobe_register+0x27/0x30 kernel/events/uprobes.c:1157 probe_event_enable+0x64a/0xee0 kernel/trace/trace_uprobe.c:944 trace_uprobe_register+0x4c9/0xcf0 kernel/trace/trace_uprobe.c:1220 kobject: 'queues' (000000004ec93bc4): kobject_uevent_env perf_trace_event_reg kernel/trace/trace_event_perf.c:124 [inline] perf_trace_event_init+0x50b/0x990 kernel/trace/trace_event_perf.c:199 perf_uprobe_init+0x1f1/0x280 kernel/trace/trace_event_perf.c:329 perf_uprobe_event_init+0x106/0x1a0 kernel/events/core.c:8503 perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9770 perf_init_event kernel/events/core.c:9801 [inline] perf_event_alloc.part.94+0x1d54/0x3740 kernel/events/core.c:10074 perf_event_alloc kernel/events/core.c:10430 [inline] __do_sys_perf_event_open+0xada/0x3020 kernel/events/core.c:10531 kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env __se_sys_perf_event_open kernel/events/core.c:10420 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10420 kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (event_mutex){+.+.}: kobject: 'queues' (000000004ec93bc4): kobject_uevent_env: filter function caused the event to drop! lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x16f0 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 perf_trace_destroy+0x28/0x100 kernel/trace/trace_event_perf.c:236 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:8336 _free_event+0x414/0x1660 kernel/events/core.c:4446 put_event+0x48/0x60 kernel/events/core.c:4532 perf_mmap_close+0x62f/0x1220 kernel/events/core.c:5515 remove_vma+0xb1/0x180 mm/mmap.c:181 remove_vma_list mm/mmap.c:2574 [inline] __do_munmap+0x751/0xf80 mm/mmap.c:2817 kobject: 'rx-0' (00000000955c4d0d): kobject_add_internal: parent: 'queues', set: 'queues' do_munmap mm/mmap.c:2825 [inline] mmap_region+0x6a7/0x1cd0 mm/mmap.c:1729 do_mmap+0xa22/0x1230 mm/mmap.c:1559 do_mmap_pgoff include/linux/mm.h:2328 [inline] vm_mmap_pgoff+0x213/0x2c0 mm/util.c:350 ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1609 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: event_mutex --> &dup_mmap_sem --> &mm->mmap_sem kobject: 'rx-0' (00000000955c4d0d): kobject_uevent_env Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_sem); lock(&dup_mmap_sem); lock(&mm->mmap_sem); lock(event_mutex); *** DEADLOCK *** 1 lock held by syz-executor5/21254: #0: 00000000fc1e6810 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x1b5/0x2c0 mm/util.c:348 kobject: 'rx-0' (00000000955c4d0d): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' stack backtrace: CPU: 1 PID: 21254 Comm: syz-executor5 Not tainted 4.20.0-rc3+ #124 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+0x244/0x39d lib/dump_stack.c:113 kobject: 'tx-0' (00000000d7a4eeb7): kobject_add_internal: parent: 'queues', set: 'queues' print_circular_bug.isra.35.cold.54+0x1bd/0x27d kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1863 [inline] check_prevs_add kernel/locking/lockdep.c:1976 [inline] validate_chain kernel/locking/lockdep.c:2347 [inline] __lock_acquire+0x3399/0x4c20 kernel/locking/lockdep.c:3341 kobject: 'tx-0' (00000000d7a4eeb7): kobject_uevent_env lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 kobject: 'tx-0' (00000000d7a4eeb7): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x16f0 kernel/locking/mutex.c:1072 kobject: 'brif' (00000000f515ba6f): kobject_add_internal: parent: 'þ€', set: '' audit: type=1800 audit(2000000165.367:62): pid=21252 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor1" name="file0" dev="sda1" ino=16977 res=0 audit: type=1804 audit(2000000165.377:63): pid=21252 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor1" name="/root/syzkaller-testdir379388642/syzkaller.ifYxoH/506/file0" dev="sda1" ino=16977 res=1 kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' perf_trace_destroy+0x28/0x100 kernel/trace/trace_event_perf.c:236 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:8336 _free_event+0x414/0x1660 kernel/events/core.c:4446 kobject: 'loop4' (00000000417c118d): kobject_uevent_env put_event+0x48/0x60 kernel/events/core.c:4532 perf_mmap_close+0x62f/0x1220 kernel/events/core.c:5515 remove_vma+0xb1/0x180 mm/mmap.c:181 remove_vma_list mm/mmap.c:2574 [inline] __do_munmap+0x751/0xf80 mm/mmap.c:2817 do_munmap mm/mmap.c:2825 [inline] mmap_region+0x6a7/0x1cd0 mm/mmap.c:1729 kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' do_mmap+0xa22/0x1230 mm/mmap.c:1559 do_mmap_pgoff include/linux/mm.h:2328 [inline] vm_mmap_pgoff+0x213/0x2c0 mm/util.c:350 ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1609 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f259d3fdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00000000201bf000 RBP: 000000000072bf00 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000004011 R11: 0000000000000246 R12: 00007f259d3fe6d4 R13: 00000000004c2b5d R14: 00000000004d4828 R15: 00000000ffffffff kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'þ€' (0000000061c5a923): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1800 audit(2000000166.197:64): pid=21305 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor0" name="file0" dev="sda1" ino=16945 res=0 kobject: 'þ€' (0000000061c5a923): kobject_uevent_env audit: type=1804 audit(2000000166.237:65): pid=21305 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir808299733/syzkaller.aG5Hku/524/file0" dev="sda1" ino=16945 res=1 kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'þ€' (0000000061c5a923): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'queues' (00000000ead04780): kobject_add_internal: parent: 'þ€', set: '' kobject: 'queues' (00000000ead04780): kobject_uevent_env kobject: 'queues' (00000000ead04780): kobject_uevent_env: filter function caused the event to drop! audit: type=1800 audit(2000000166.247:66): pid=21315 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor1" name="file0" dev="sda1" ino=17185 res=0 kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (000000008b3e97de): kobject_add_internal: parent: 'queues', set: 'queues' audit: type=1804 audit(2000000166.247:67): pid=21315 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor1" name="/root/syzkaller-testdir379388642/syzkaller.ifYxoH/507/file0" dev="sda1" ino=17185 res=1 kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (000000008b3e97de): kobject_uevent_env kobject: 'rx-0' (000000008b3e97de): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'tx-0' (00000000bec0d36c): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000bec0d36c): kobject_uevent_env kobject: 'tx-0' (00000000bec0d36c): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'brif' (00000000039fb1b2): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'brif' (00000000f515ba6f): kobject_cleanup, parent 000000002ddab27f kobject: 'brif' (00000000f515ba6f): auto cleanup kobject_del kobject: 'brif' (00000000f515ba6f): calling ktype release kobject: (00000000f515ba6f): dynamic_kobj_release kobject: 'brif': free name kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' audit: type=1800 audit(2000000167.357:68): pid=21356 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor1" name="file0" dev="sda1" ino=16929 res=0 kobject: 'rx-0' (00000000955c4d0d): kobject_cleanup, parent 000000004ec93bc4 kobject: 'rx-0' (00000000955c4d0d): auto cleanup 'remove' event audit: type=1804 audit(2000000167.357:69): pid=21356 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor1" name="/root/syzkaller-testdir379388642/syzkaller.ifYxoH/508/file0" dev="sda1" ino=16929 res=1 kobject: 'rx-0' (00000000955c4d0d): kobject_uevent_env kobject: 'rx-0' (00000000955c4d0d): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'rx-0' (00000000955c4d0d): auto cleanup kobject_del kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'rx-0' (00000000955c4d0d): calling ktype release kobject: 'rx-0': free name kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0' (00000000d7a4eeb7): kobject_cleanup, parent 000000004ec93bc4 kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000d7a4eeb7): auto cleanup 'remove' event audit: type=1800 audit(2000000167.717:70): pid=21380 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor0" name="file0" dev="sda1" ino=17233 res=0 kobject: 'tx-0' (00000000d7a4eeb7): kobject_uevent_env audit: type=1804 audit(2000000167.767:71): pid=21380 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir808299733/syzkaller.aG5Hku/525/file0" dev="sda1" ino=17233 res=1 kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000d7a4eeb7): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000d7a4eeb7): auto cleanup kobject_del kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000d7a4eeb7): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (000000004ec93bc4): kobject_cleanup, parent (null) kobject: 'queues' (000000004ec93bc4): calling ktype release kobject: 'queues' (000000004ec93bc4): kset_release kobject: 'queues': free name kobject: 'þ€' (000000002ddab27f): kobject_uevent_env kobject: 'þ€' (000000002ddab27f): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'þ€' (000000002ddab27f): kobject_cleanup, parent (null) kobject: 'þ€' (000000002ddab27f): calling ktype release kobject: 'þ€': free name kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'þ€' (000000005a1a0772): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'þ€' (000000005a1a0772): kobject_uevent_env kobject: 'þ€' (000000005a1a0772): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'queues' (000000003791a54e): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'queues' (000000003791a54e): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'queues' (000000003791a54e): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000784452f7): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000784452f7): kobject_uevent_env kobject: 'rx-0' (00000000784452f7): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'tx-0' (0000000071366faf): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (0000000071366faf): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'tx-0' (0000000071366faf): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'brif' (0000000053ddc50b): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'brif' (00000000039fb1b2): kobject_cleanup, parent 0000000061c5a923 kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'brif' (00000000039fb1b2): auto cleanup kobject_del kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'brif' (00000000039fb1b2): calling ktype release kobject: (00000000039fb1b2): dynamic_kobj_release kobject: 'brif': free name netlink: 'syz-executor3': attribute type 4 has an invalid length. kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' netlink: 'syz-executor3': attribute type 1 has an invalid length. kobject: 'rx-0' (000000008b3e97de): kobject_cleanup, parent 00000000ead04780 kobject: 'rx-0' (000000008b3e97de): auto cleanup 'remove' event kobject: 'rx-0' (000000008b3e97de): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'rx-0' (000000008b3e97de): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'rx-0' (000000008b3e97de): auto cleanup kobject_del kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (000000008b3e97de): calling ktype release kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'rx-0': free name kobject: 'tx-0' (00000000bec0d36c): kobject_cleanup, parent 00000000ead04780 kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000bec0d36c): auto cleanup 'remove' event kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000bec0d36c): kobject_uevent_env kobject: 'tx-0' (00000000bec0d36c): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'tx-0' (00000000bec0d36c): auto cleanup kobject_del kobject: 'tx-0' (00000000bec0d36c): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000ead04780): kobject_cleanup, parent (null) kobject: 'queues' (00000000ead04780): calling ktype release kobject: 'queues' (00000000ead04780): kset_release kobject: 'queues': free name kobject: 'þ€' (0000000061c5a923): kobject_uevent_env kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'þ€' (0000000061c5a923): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'þ€' (0000000061c5a923): kobject_cleanup, parent (null) kobject: 'þ€' (0000000061c5a923): calling ktype release kobject: 'þ€': free name kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'þ€' (000000004b411c25): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kauditd_printk_skb: 8 callbacks suppressed audit: type=1800 audit(2000000170.627:80): pid=21526 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor0" name="file0" dev="sda1" ino=16657 res=0 kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'þ€' (000000004b411c25): kobject_uevent_env audit: type=1804 audit(2000000170.657:81): pid=21526 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir808299733/syzkaller.aG5Hku/528/file0" dev="sda1" ino=16657 res=1 kobject: 'þ€' (000000004b411c25): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'queues' (00000000397c9ac6): kobject_add_internal: parent: 'þ€', set: '' audit: type=1800 audit(2000000170.667:82): pid=21529 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor1" name="file0" dev="sda1" ino=16674 res=0 kobject: 'queues' (00000000397c9ac6): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'queues' (00000000397c9ac6): kobject_uevent_env: filter function caused the event to drop! kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1804 audit(2000000170.677:83): pid=21529 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor1" name="/root/syzkaller-testdir379388642/syzkaller.ifYxoH/511/file0" dev="sda1" ino=16674 res=1 kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'rx-0' (000000006bcfd5db): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (000000006bcfd5db): kobject_uevent_env kobject: 'rx-0' (000000006bcfd5db): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'tx-0' (00000000ebf7decf): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000ebf7decf): kobject_uevent_env kobject: 'tx-0' (00000000ebf7decf): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'brif' (000000008e161719): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'brif' (0000000053ddc50b): kobject_cleanup, parent 000000005a1a0772 kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'brif' (0000000053ddc50b): auto cleanup kobject_del kobject: 'brif' (0000000053ddc50b): calling ktype release kobject: (0000000053ddc50b): dynamic_kobj_release kobject: 'brif': free name kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000d02b7765): kobject_uevent_env audit: type=1800 audit(2000000171.667:84): pid=21574 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor1" name="file0" dev="sda1" ino=17412 res=0 kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'rx-0' (00000000784452f7): kobject_cleanup, parent 000000003791a54e kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1804 audit(2000000171.697:85): pid=21574 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor1" name="/root/syzkaller-testdir379388642/syzkaller.ifYxoH/512/file0" dev="sda1" ino=17412 res=1 kobject: 'rx-0' (00000000784452f7): auto cleanup 'remove' event audit: type=1800 audit(2000000171.757:86): pid=21586 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor0" name="file0" dev="sda1" ino=16674 res=0 audit: type=1804 audit(2000000171.777:87): pid=21586 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir808299733/syzkaller.aG5Hku/529/file0" dev="sda1" ino=16674 res=1 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b902ee14 [p=00000000cb3cf2af fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000905b6b60 n=000000007d53f18d FS-Cache: O-key=[10] '0200020000a07f000008' FS-Cache: N-cookie c=00000000e90a0705 [p=00000000cb3cf2af fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000905b6b60 n=000000004bab4930 FS-Cache: N-key=[10] '0200020000a07f000008' kobject: 'rx-0' (00000000784452f7): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'rx-0' (00000000784452f7): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (00000000784452f7): auto cleanup kobject_del kobject: 'rx-0' (00000000784452f7): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (0000000071366faf): kobject_cleanup, parent 000000003791a54e kobject: 'tx-0' (0000000071366faf): auto cleanup 'remove' event kobject: 'tx-0' (0000000071366faf): kobject_uevent_env kobject: 'tx-0' (0000000071366faf): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'tx-0' (0000000071366faf): auto cleanup kobject_del kobject: 'tx-0' (0000000071366faf): calling ktype release kobject: 'tx-0': free name kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'queues' (000000003791a54e): kobject_cleanup, parent (null) kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (000000003791a54e): calling ktype release kobject: 'queues' (000000003791a54e): kset_release kobject: 'queues': free name kobject: 'þ€' (000000005a1a0772): kobject_uevent_env kobject: 'þ€' (000000005a1a0772): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'þ€' (000000005a1a0772): kobject_cleanup, parent (null) kobject: 'þ€' (000000005a1a0772): calling ktype release kobject: 'þ€': free name kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'brif' (000000008e161719): kobject_cleanup, parent 000000004b411c25 kobject: 'brif' (000000008e161719): auto cleanup kobject_del kobject: 'brif' (000000008e161719): calling ktype release kobject: (000000008e161719): dynamic_kobj_release kobject: 'brif': free name kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1800 audit(2000000172.767:88): pid=21630 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor1" name="file0" dev="sda1" ino=17418 res=0 kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'rx-0' (000000006bcfd5db): kobject_cleanup, parent 00000000397c9ac6 kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' audit: type=1804 audit(2000000172.787:89): pid=21630 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor1" name="/root/syzkaller-testdir379388642/syzkaller.ifYxoH/513/file0" dev="sda1" ino=17418 res=1 kobject: 'rx-0' (000000006bcfd5db): auto cleanup 'remove' event kobject: 'rx-0' (000000006bcfd5db): kobject_uevent_env kobject: 'rx-0' (000000006bcfd5db): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'rx-0' (000000006bcfd5db): auto cleanup kobject_del kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rx-0' (000000006bcfd5db): calling ktype release kobject: 'rx-0': free name kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000ebf7decf): kobject_cleanup, parent 00000000397c9ac6 kobject: 'tx-0' (00000000ebf7decf): auto cleanup 'remove' event kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000ebf7decf): kobject_uevent_env kobject: 'tx-0' (00000000ebf7decf): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'tx-0' (00000000ebf7decf): auto cleanup kobject_del kobject: 'tx-0' (00000000ebf7decf): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000397c9ac6): kobject_cleanup, parent (null) kobject: 'queues' (00000000397c9ac6): calling ktype release kobject: 'queues' (00000000397c9ac6): kset_release kobject: 'queues': free name kobject: 'þ€' (000000004b411c25): kobject_uevent_env kobject: 'þ€' (000000004b411c25): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'þ€' (000000004b411c25): kobject_cleanup, parent (null) kobject: 'þ€' (000000004b411c25): calling ktype release kobject: 'þ€': free name kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000297ce718): kobject_uevent_env kobject: 'loop1' (00000000297ce718): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'þ€' (00000000fea35119): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'þ€' (00000000fea35119): kobject_uevent_env kobject: 'þ€' (00000000fea35119): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'queues' (00000000d6dfb7b6): kobject_add_internal: parent: 'þ€', set: '' kobject: 'queues' (00000000d6dfb7b6): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'queues' (00000000d6dfb7b6): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (0000000079066dbd): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (0000000079066dbd): kobject_uevent_env kobject: 'rx-0' (0000000079066dbd): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'loop3' (00000000c4fc0057): kobject_uevent_env kobject: 'loop3' (00000000c4fc0057): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (00000000164405c1): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop5' (00000000d02b7765): kobject_uevent_env kobject: 'loop5' (00000000d02b7765): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'tx-0' (00000000164405c1): kobject_uevent_env kobject: 'tx-0' (00000000164405c1): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'brif' (000000003107b15a): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop0' (00000000013a3f99): kobject_uevent_env kobject: 'loop0' (00000000013a3f99): fill_kobj_path: path = '/devices/virtual/block/loop0' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=0000000066bebffc [p=00000000cb3cf2af fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000905b6b60 n=00000000a28721b4 FS-Cache: O-key=[10] '0200020000a07f000008' FS-Cache: N-cookie c=0000000085a0be13 [p=00000000cb3cf2af fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000905b6b60 n=000000009d567e21 FS-Cache: N-key=[10] '0200020000a07f000008' kobject: 'loop4' (00000000417c118d): kobject_uevent_env kobject: 'loop4' (00000000417c118d): fill_kobj_path: path = '/devices/virtual/block/loop4'