====================================================== WARNING: possible circular locking dependency detected 5.0.0-rc7+ #86 Not tainted ------------------------------------------------------ syz-executor.2/22486 is trying to acquire lock: 000000003a591e0b (&mm->mmap_sem){++++}, at: do_user_addr_fault arch/x86/mm/fault.c:1426 [inline] 000000003a591e0b (&mm->mmap_sem){++++}, at: __do_page_fault+0x9c2/0xd60 arch/x86/mm/fault.c:1541 but task is already holding lock: 0000000011160356 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:757 [inline] 0000000011160356 (&sb->s_type->i_mutex_key#12){+.+.}, at: generic_file_write_iter+0xdf/0x610 mm/filemap.c:3358 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&sb->s_type->i_mutex_key#12){+.+.}: down_write+0x38/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:757 [inline] shmem_fallocate+0x15a/0xc60 mm/shmem.c:2633 ashmem_shrink_scan drivers/staging/android/ashmem.c:455 [inline] ashmem_shrink_scan+0x1d7/0x4f0 drivers/staging/android/ashmem.c:439 ashmem_ioctl+0x2f0/0x11a0 drivers/staging/android/ashmem.c:797 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (ashmem_mutex){+.+.}: __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 ashmem_mmap+0x55/0x520 drivers/staging/android/ashmem.c:361 call_mmap include/linux/fs.h:1868 [inline] mmap_region+0xc37/0x1760 mm/mmap.c:1786 do_mmap+0x8e2/0x1080 mm/mmap.c:1559 do_mmap_pgoff include/linux/mm.h:2379 [inline] vm_mmap_pgoff+0x1c5/0x230 mm/util.c:350 ksys_mmap_pgoff+0x4aa/0x630 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&mm->mmap_sem){++++}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841 down_read+0x3b/0x90 kernel/locking/rwsem.c:24 do_user_addr_fault arch/x86/mm/fault.c:1426 [inline] __do_page_fault+0x9c2/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0x71/0x581 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 fault_in_pages_readable include/linux/pagemap.h:603 [inline] iov_iter_fault_in_readable+0x1ba/0x450 lib/iov_iter.c:425 generic_perform_write+0x195/0x530 mm/filemap.c:3198 __generic_file_write_iter+0x25e/0x630 mm/filemap.c:3333 generic_file_write_iter+0x360/0x610 mm/filemap.c:3361 call_write_iter include/linux/fs.h:1863 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x613/0x8e0 fs/read_write.c:487 vfs_write+0x20c/0x580 fs/read_write.c:549 ksys_write+0xea/0x1f0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &mm->mmap_sem --> ashmem_mutex --> &sb->s_type->i_mutex_key#12 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sb->s_type->i_mutex_key#12); lock(ashmem_mutex); lock(&sb->s_type->i_mutex_key#12); lock(&mm->mmap_sem); *** DEADLOCK *** 2 locks held by syz-executor.2/22486: #0: 000000007605b5ad (sb_writers#5){.+.+}, at: file_start_write include/linux/fs.h:2816 [inline] #0: 000000007605b5ad (sb_writers#5){.+.+}, at: vfs_write+0x429/0x580 fs/read_write.c:548 #1: 0000000011160356 (&sb->s_type->i_mutex_key#12){+.+.}, at: inode_lock include/linux/fs.h:757 [inline] #1: 0000000011160356 (&sb->s_type->i_mutex_key#12){+.+.}, at: generic_file_write_iter+0xdf/0x610 mm/filemap.c:3358 stack backtrace: CPU: 1 PID: 22486 Comm: syz-executor.2 Not tainted 5.0.0-rc7+ #86 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 down_read+0x3b/0x90 kernel/locking/rwsem.c:24 do_user_addr_fault arch/x86/mm/fault.c:1426 [inline] __do_page_fault+0x9c2/0xd60 arch/x86/mm/fault.c:1541 do_page_fault+0x71/0x581 arch/x86/mm/fault.c:1572 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:603 [inline] RIP: 0010:iov_iter_fault_in_readable+0x1ba/0x450 lib/iov_iter.c:425 Code: 4c 39 f3 76 17 eb 3b e8 54 2c 47 fe 48 81 c3 00 10 00 00 48 39 9d 68 ff ff ff 72 2d e8 3f 2c 47 fe 0f 1f 00 0f ae e8 45 31 f6 <8a> 13 0f 1f 00 31 ff 44 89 f6 41 88 57 d0 e8 a3 2d 47 fe 45 85 f6 RSP: 0018:ffff8880626cf9b8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 00000000200000c0 RCX: ffffc9000d27d000 RDX: 0000000000000155 RSI: ffffffff8328b541 RDI: 0000000000000005 RBP: ffff8880626cfa58 R08: ffff88800fcb2440 R09: ffffed100a82d17a R10: ffffed100a82d179 R11: ffff888054168bcb R12: 0000000000000002 R13: 0000000000000002 R14: 0000000000000000 R15: ffff8880626cfa30 generic_perform_write+0x195/0x530 mm/filemap.c:3198 __generic_file_write_iter+0x25e/0x630 mm/filemap.c:3333 generic_file_write_iter+0x360/0x610 mm/filemap.c:3361 call_write_iter include/linux/fs.h:1863 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x613/0x8e0 fs/read_write.c:487 vfs_write+0x20c/0x580 fs/read_write.c:549 ksys_write+0xea/0x1f0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 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:00007f73a14b5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000007 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f73a14b66d4 R13: 00000000004c3bdf R14: 00000000004dc4e8 R15: 00000000ffffffff kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'input41' (00000000d6bdea19): kobject_cleanup, parent (null) kobject: 'input41' (00000000d6bdea19): calling ktype release kobject: 'input41': free name kobject: 'input42' (000000001fe631a8): kobject_cleanup, parent (null) kobject: 'input42' (000000001fe631a8): calling ktype release kobject: 'input42': free name kobject: 'input43' (00000000ea748321): kobject_cleanup, parent (null) kobject: 'input43' (00000000ea748321): calling ktype release kobject: 'input43': free name kobject: 'input44' (00000000c41d7dad): kobject_cleanup, parent (null) kobject: 'input45' (000000008f9ea493): kobject_cleanup, parent (null) kobject: 'input45' (000000008f9ea493): calling ktype release kobject: 'input44' (00000000c41d7dad): calling ktype release kobject: 'input45': free name kobject: 'input44': free name kobject: 'input46' (0000000039602b6a): kobject_cleanup, parent (null) kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'input46' (0000000039602b6a): calling ktype release kobject: 'input47' (00000000299345d2): kobject_cleanup, parent (null) kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'input46': free name kobject: 'input48' (00000000bac03862): kobject_cleanup, parent (null) kobject: 'input48' (00000000bac03862): calling ktype release kobject: 'input48': free name kobject: 'input47' (00000000299345d2): calling ktype release kobject: 'input47': free name kobject: 'input50' (00000000dda5bae0): kobject_cleanup, parent (null) kobject: 'input49' (000000008244e5b8): kobject_cleanup, parent (null) kobject: 'input50' (00000000dda5bae0): calling ktype release kobject: 'input50': free name kobject: 'input51' (00000000426432d8): kobject_cleanup, parent (null) kobject: 'input51' (00000000426432d8): calling ktype release kobject: 'input49' (000000008244e5b8): calling ktype release kobject: 'input51': free name kobject: 'input49': free name kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'þ€' (00000000f1a9b57d): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'þ€' (00000000f1a9b57d): kobject_uevent_env kobject: 'þ€' (00000000f1a9b57d): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'queues' (00000000dcf40ea7): kobject_add_internal: parent: 'þ€', set: '' kobject: 'queues' (00000000dcf40ea7): kobject_uevent_env kobject: 'queues' (00000000dcf40ea7): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000006c29707e): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000006c29707e): kobject_uevent_env kobject: 'rx-0' (000000006c29707e): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'tx-0' (0000000004a4b1e8): kobject_add_internal: parent: 'queues', set: 'queues' audit: type=1800 audit(1550958756.780:276): pid=22698 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="file0" dev="sda1" ino=17731 res=0 kobject: 'tx-0' (0000000004a4b1e8): kobject_uevent_env overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value audit: type=1804 audit(1550958756.840:277): pid=22698 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir291602748/syzkaller.3ZaGnV/614/file0" dev="sda1" ino=17731 res=1 kobject: 'tx-0' (0000000004a4b1e8): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'brif' (00000000ba587b3a): kobject_add_internal: parent: 'þ€', set: '' kobject: 'batman_adv' (0000000060a2fed1): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'brif' (00000000ba587b3a): kobject_cleanup, parent 00000000f1a9b57d kobject: 'brif' (00000000ba587b3a): auto cleanup kobject_del kobject: 'brif' (00000000ba587b3a): calling ktype release kobject: (00000000ba587b3a): dynamic_kobj_release kobject: 'brif': free name kobject: 'batman_adv' (0000000060a2fed1): kobject_uevent_env kobject: 'batman_adv' (0000000060a2fed1): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (0000000060a2fed1): kobject_cleanup, parent (null) kobject: 'batman_adv' (0000000060a2fed1): calling ktype release kobject: (0000000060a2fed1): dynamic_kobj_release kobject: 'batman_adv': free name kobject: 'rx-0' (000000006c29707e): kobject_cleanup, parent 00000000dcf40ea7 kobject: 'rx-0' (000000006c29707e): auto cleanup 'remove' event kobject: 'rx-0' (000000006c29707e): kobject_uevent_env kobject: 'rx-0' (000000006c29707e): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'rx-0' (000000006c29707e): auto cleanup kobject_del kobject: 'rx-0' (000000006c29707e): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (0000000004a4b1e8): kobject_cleanup, parent 00000000dcf40ea7 kobject: 'tx-0' (0000000004a4b1e8): auto cleanup 'remove' event kobject: 'tx-0' (0000000004a4b1e8): kobject_uevent_env kobject: 'tx-0' (0000000004a4b1e8): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'tx-0' (0000000004a4b1e8): auto cleanup kobject_del kobject: 'tx-0' (0000000004a4b1e8): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000dcf40ea7): kobject_cleanup, parent (null) overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value kobject: 'queues' (00000000dcf40ea7): calling ktype release kobject: 'queues' (00000000dcf40ea7): kset_release kobject: 'queues': free name kobject: 'þ€' (00000000f1a9b57d): kobject_uevent_env audit: type=1804 audit(1550958757.480:278): pid=22694 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir291602748/syzkaller.3ZaGnV/614/file0" dev="sda1" ino=17731 res=1 kobject: 'þ€' (00000000f1a9b57d): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'þ€' (00000000f1a9b57d): kobject_cleanup, parent (null) kobject: 'þ€' (00000000f1a9b57d): calling ktype release kobject: 'þ€': free name kobject: 'þ€' (0000000096e7e250): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'þ€' (0000000096e7e250): kobject_uevent_env kobject: 'þ€' (0000000096e7e250): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'queues' (00000000aee05423): kobject_add_internal: parent: 'þ€', set: '' kobject: 'queues' (00000000aee05423): kobject_uevent_env kobject: 'queues' (00000000aee05423): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000000903ddec): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000000903ddec): kobject_uevent_env kobject: 'rx-0' (000000000903ddec): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'tx-0' (000000008170d814): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000008170d814): kobject_uevent_env kobject: 'tx-0' (000000008170d814): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'brif' (000000005a4ae6dc): kobject_add_internal: parent: 'þ€', set: '' kobject: 'batman_adv' (00000000c76a7b9c): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'brif' (000000005a4ae6dc): kobject_cleanup, parent 0000000096e7e250 kobject: 'brif' (000000005a4ae6dc): auto cleanup kobject_del kobject: 'brif' (000000005a4ae6dc): calling ktype release kobject: (000000005a4ae6dc): dynamic_kobj_release kobject: 'brif': free name kobject: 'batman_adv' (00000000c76a7b9c): kobject_uevent_env kobject: 'batman_adv' (00000000c76a7b9c): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (00000000c76a7b9c): kobject_cleanup, parent (null) kobject: 'batman_adv' (00000000c76a7b9c): calling ktype release kobject: (00000000c76a7b9c): dynamic_kobj_release audit: type=1800 audit(1550958758.260:279): pid=22843 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="file0" dev="sda1" ino=17744 res=0 kobject: 'batman_adv': free name overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value audit: type=1804 audit(1550958758.310:280): pid=22843 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir291602748/syzkaller.3ZaGnV/615/file0" dev="sda1" ino=17744 res=1 kobject: 'rx-0' (000000000903ddec): kobject_cleanup, parent 00000000aee05423 kobject: 'rx-0' (000000000903ddec): auto cleanup 'remove' event kobject: 'rx-0' (000000000903ddec): kobject_uevent_env kobject: 'rx-0' (000000000903ddec): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'rx-0' (000000000903ddec): auto cleanup kobject_del kobject: 'rx-0' (000000000903ddec): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (000000008170d814): kobject_cleanup, parent 00000000aee05423 kobject: 'tx-0' (000000008170d814): auto cleanup 'remove' event kobject: 'tx-0' (000000008170d814): kobject_uevent_env kobject: 'tx-0' (000000008170d814): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'tx-0' (000000008170d814): auto cleanup kobject_del kobject: 'tx-0' (000000008170d814): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000aee05423): kobject_cleanup, parent (null) kobject: 'queues' (00000000aee05423): calling ktype release kobject: 'queues' (00000000aee05423): kset_release kobject: 'queues': free name kobject: 'þ€' (0000000096e7e250): kobject_uevent_env kobject: 'þ€' (0000000096e7e250): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'þ€' (0000000096e7e250): kobject_cleanup, parent (null) kobject: 'þ€' (0000000096e7e250): calling ktype release kobject: 'þ€': free name kobject: 'þ€' (0000000096ddb734): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'þ€' (0000000096ddb734): kobject_uevent_env kobject: 'þ€' (0000000096ddb734): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'queues' (00000000fc12d216): kobject_add_internal: parent: 'þ€', set: '' kobject: 'queues' (00000000fc12d216): kobject_uevent_env kobject: 'queues' (00000000fc12d216): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (0000000039932939): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (0000000039932939): kobject_uevent_env kobject: 'rx-0' (0000000039932939): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' kobject: 'tx-0' (00000000d0561ff8): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000d0561ff8): kobject_uevent_env kobject: 'tx-0' (00000000d0561ff8): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'brif' (000000005bed82bb): kobject_add_internal: parent: 'þ€', set: '' kobject: 'batman_adv' (00000000d93a93eb): kobject_add_internal: parent: 'þ€', set: '' kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'brif' (000000005bed82bb): kobject_cleanup, parent 0000000096ddb734 kobject: 'brif' (000000005bed82bb): auto cleanup kobject_del kobject: 'brif' (000000005bed82bb): calling ktype release kobject: (000000005bed82bb): dynamic_kobj_release kobject: 'brif': free name kobject: 'batman_adv' (00000000d93a93eb): kobject_uevent_env kobject: 'batman_adv' (00000000d93a93eb): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (00000000d93a93eb): kobject_cleanup, parent (null) kobject: 'batman_adv' (00000000d93a93eb): calling ktype release audit: type=1800 audit(1550958759.200:281): pid=22985 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file0" dev="sda1" ino=17741 res=0 kobject: (00000000d93a93eb): dynamic_kobj_release overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value kobject: 'batman_adv': free name audit: type=1804 audit(1550958759.260:282): pid=22985 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir795418160/syzkaller.48Eu9C/434/file0" dev="sda1" ino=17741 res=1 kobject: 'rx-0' (0000000039932939): kobject_cleanup, parent 00000000fc12d216 kobject: 'rx-0' (0000000039932939): auto cleanup 'remove' event kobject: 'rx-0' (0000000039932939): kobject_uevent_env audit: type=1800 audit(1550958759.370:283): pid=23072 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="file0" dev="sda1" ino=16536 res=0 kobject: 'rx-0' (0000000039932939): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/rx-0' overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value kobject: 'rx-0' (0000000039932939): auto cleanup kobject_del kobject: 'rx-0' (0000000039932939): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000d0561ff8): kobject_cleanup, parent 00000000fc12d216 audit: type=1804 audit(1550958759.430:284): pid=23072 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir291602748/syzkaller.3ZaGnV/616/file0" dev="sda1" ino=16536 res=1 kobject: 'tx-0' (00000000d0561ff8): auto cleanup 'remove' event kobject: 'tx-0' (00000000d0561ff8): kobject_uevent_env kobject: 'tx-0' (00000000d0561ff8): fill_kobj_path: path = '/devices/virtual/net/þ€/queues/tx-0' kobject: 'tx-0' (00000000d0561ff8): auto cleanup kobject_del kobject: 'tx-0' (00000000d0561ff8): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000fc12d216): kobject_cleanup, parent (null) kobject: 'queues' (00000000fc12d216): calling ktype release kobject: 'queues' (00000000fc12d216): kset_release kobject: 'queues': free name kobject: 'þ€' (0000000096ddb734): kobject_uevent_env kobject: 'þ€' (0000000096ddb734): fill_kobj_path: path = '/devices/virtual/net/þ€' kobject: 'þ€' (0000000096ddb734): kobject_cleanup, parent (null) kobject: 'þ€' (0000000096ddb734): calling ktype release kobject: 'þ€': free name kobject: 'loop0' (000000008ed0f5b4): kobject_uevent_env kobject: 'loop0' (000000008ed0f5b4): fill_kobj_path: path = '/devices/virtual/block/loop0' audit: type=1800 audit(1550958760.040:285): pid=23077 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=16537 res=0 overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value overlayfs: unrecognized mount option "obj_user=/dev/adsp#" or missing value kobject: 'brif' (000000007836d129): kobject_cleanup, parent 000000009faad2ac kobject: 'brif' (000000007836d129): auto cleanup kobject_del kobject: 'brif' (000000007836d129): calling ktype release kobject: (000000007836d129): dynamic_kobj_release kobject: 'brif': free name kobject: 'batman_adv' (0000000092915efb): kobject_uevent_env kobject: 'batman_adv' (0000000092915efb): kobject_uevent_env: filter function caused the event to drop!