====================================================== WARNING: possible circular locking dependency detected 5.0.0-rc6+ #70 Not tainted ------------------------------------------------------ syz-executor.2/10111 is trying to acquire lock: 0000000045031b7f (&sig->cred_guard_mutex){+.+.}, at: lock_trace+0x4a/0xe0 fs/proc/base.c:384 but task is already holding lock: 00000000f23c4415 (&p->lock){+.+.}, at: seq_read+0x71/0x1130 fs/seq_file.c:161 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&p->lock){+.+.}: __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 seq_read+0x71/0x1130 fs/seq_file.c:161 proc_reg_read+0x1fa/0x2c0 fs/proc/inode.c:229 do_loop_readv_writev fs/read_write.c:700 [inline] do_loop_readv_writev fs/read_write.c:687 [inline] do_iter_read+0x4a9/0x660 fs/read_write.c:921 vfs_readv+0xf0/0x160 fs/read_write.c:983 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x475/0x890 fs/splice.c:417 do_splice_to+0x12a/0x190 fs/splice.c:880 do_splice+0xf7c/0x1330 fs/splice.c:1178 __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 -> #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_killable_nested+0x16/0x20 kernel/locking/mutex.c:1102 lock_trace+0x4a/0xe0 fs/proc/base.c:384 proc_pid_personality+0x1c/0xd0 fs/proc/base.c:2899 proc_single_show+0xf6/0x180 fs/proc/base.c:739 traverse fs/seq_file.c:113 [inline] traverse+0x1d6/0x760 fs/seq_file.c:91 seq_read+0x8f8/0x1130 fs/seq_file.c:188 do_loop_readv_writev fs/read_write.c:700 [inline] do_loop_readv_writev fs/read_write.c:687 [inline] do_iter_read+0x4a9/0x660 fs/read_write.c:921 vfs_readv+0xf0/0x160 fs/read_write.c:983 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x475/0x890 fs/splice.c:417 do_splice_to+0x12a/0x190 fs/splice.c:880 splice_direct_to_actor+0x2d2/0x970 fs/splice.c:957 do_splice_direct+0x1da/0x2a0 fs/splice.c:1066 do_sendfile+0x597/0xd00 fs/read_write.c:1436 __do_compat_sys_sendfile fs/read_write.c:1512 [inline] __se_compat_sys_sendfile fs/read_write.c:1501 [inline] __ia32_compat_sys_sendfile+0x169/0x230 fs/read_write.c:1501 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: Chain exists of: &sig->cred_guard_mutex --> &pipe->mutex/1 --> &p->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&p->lock); lock(&pipe->mutex/1); lock(&p->lock); lock(&sig->cred_guard_mutex); *** DEADLOCK *** 2 locks held by syz-executor.2/10111: #0: 00000000788f4354 (sb_writers#6){.+.+}, at: file_start_write include/linux/fs.h:2816 [inline] #0: 00000000788f4354 (sb_writers#6){.+.+}, at: do_sendfile+0x9b9/0xd00 fs/read_write.c:1435 #1: 00000000f23c4415 (&p->lock){+.+.}, at: seq_read+0x71/0x1130 fs/seq_file.c:161 stack backtrace: CPU: 1 PID: 10111 Comm: syz-executor.2 Not tainted 5.0.0-rc6+ #70 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_killable_nested+0x16/0x20 kernel/locking/mutex.c:1102 lock_trace+0x4a/0xe0 fs/proc/base.c:384 proc_pid_personality+0x1c/0xd0 fs/proc/base.c:2899 proc_single_show+0xf6/0x180 fs/proc/base.c:739 traverse fs/seq_file.c:113 [inline] traverse+0x1d6/0x760 fs/seq_file.c:91 seq_read+0x8f8/0x1130 fs/seq_file.c:188 do_loop_readv_writev fs/read_write.c:700 [inline] do_loop_readv_writev fs/read_write.c:687 [inline] do_iter_read+0x4a9/0x660 fs/read_write.c:921 vfs_readv+0xf0/0x160 fs/read_write.c:983 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x475/0x890 fs/splice.c:417 do_splice_to+0x12a/0x190 fs/splice.c:880 splice_direct_to_actor+0x2d2/0x970 fs/splice.c:957 do_splice_direct+0x1da/0x2a0 fs/splice.c:1066 do_sendfile+0x597/0xd00 fs/read_write.c:1436 __do_compat_sys_sendfile fs/read_write.c:1512 [inline] __se_compat_sys_sendfile fs/read_write.c:1501 [inline] __ia32_compat_sys_sendfile+0x169/0x230 fs/read_write.c:1501 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: 0023:0xf7f55869 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:00000000f5d510cc EFLAGS: 00000296 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000003 RDX: 0000000020000000 RSI: 0000000080000003 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000602d3364): kobject_uevent_env dlm: no locking on control device kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f9422554): kobject_uevent_env dlm: no locking on control device kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env dlm: no locking on control device kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' dlm: no locking on control device kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000b554c929): kobject_uevent_env dlm: no locking on control device kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env dlm: no locking on control device kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' dlm: no locking on control device kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f9422554): kobject_uevent_env net_ratelimit: 16 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000b554c929): kobject_uevent_env dlm: no locking on control device kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env dlm: no locking on control device kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env dlm: no locking on control device kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000602d3364): kobject_uevent_env kobject: 'loop3' (00000000602d3364): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' audit: type=1326 audit(1550111183.029:35): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10510 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=40000003 syscall=265 compat=1 ip=0xf7efe869 code=0x0 kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000b554c929): kobject_uevent_env kobject: 'loop2' (00000000b554c929): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'batman_adv' (00000000c566f0ac): kobject_uevent_env kobject: 'batman_adv' (00000000c566f0ac): kobject_uevent_env: filter function caused the event to drop! kobject: 'loop5' (00000000c92c523b): kobject_uevent_env kobject: 'batman_adv' (00000000c566f0ac): kobject_cleanup, parent (null) audit: type=1326 audit(1550111183.789:36): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=10537 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=40000003 syscall=265 compat=1 ip=0xf7efe869 code=0x0 kobject: 'loop5' (00000000c92c523b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'batman_adv' (00000000c566f0ac): calling ktype release kobject: (00000000c566f0ac): dynamic_kobj_release kobject: 'batman_adv': free name kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'rx-0' (000000004a8466a7): kobject_cleanup, parent 00000000f477554a kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'rx-0' (000000004a8466a7): auto cleanup 'remove' event kobject: 'rx-0' (000000004a8466a7): kobject_uevent_env kobject: 'loop4' (00000000438bdfb3): kobject_uevent_env kobject: 'rx-0' (000000004a8466a7): fill_kobj_path: path = '/devices/virtual/net/syz_tun/queues/rx-0' kobject: 'loop4' (00000000438bdfb3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (000000004a8466a7): auto cleanup kobject_del kobject: 'rx-0' (000000004a8466a7): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000a323ab5c): kobject_cleanup, parent 00000000f477554a kobject: 'tx-0' (00000000a323ab5c): auto cleanup 'remove' event kobject: 'tx-0' (00000000a323ab5c): kobject_uevent_env kobject: 'tx-0' (00000000a323ab5c): fill_kobj_path: path = '/devices/virtual/net/syz_tun/queues/tx-0' kobject: 'tx-0' (00000000a323ab5c): auto cleanup kobject_del kobject: 'tx-0' (00000000a323ab5c): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000f477554a): kobject_cleanup, parent (null) kobject: 'queues' (00000000f477554a): calling ktype release kobject: 'queues' (00000000f477554a): kset_release kobject: 'queues': free name kobject: 'syz_tun' (00000000517c94b7): kobject_uevent_env kobject: 'syz_tun' (00000000517c94b7): fill_kobj_path: path = '/devices/virtual/net/syz_tun' kobject: 'syz_tun' (00000000517c94b7): kobject_cleanup, parent (null) kobject: 'syz_tun' (00000000517c94b7): calling ktype release kobject: 'syz_tun': free name kobject: 'rx-0' (00000000a02df8e0): kobject_cleanup, parent 00000000f51f34ec kobject: 'rx-0' (00000000a02df8e0): auto cleanup 'remove' event kobject: 'rx-0' (00000000a02df8e0): kobject_uevent_env kobject: 'rx-0' (00000000a02df8e0): fill_kobj_path: path = '/devices/virtual/net/ppp1953527154/queues/rx-0' kobject: 'rx-0' (00000000a02df8e0): auto cleanup kobject_del kobject: 'rx-0' (00000000a02df8e0): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000064f949e): kobject_cleanup, parent 00000000f51f34ec kobject: 'tx-0' (00000000064f949e): auto cleanup 'remove' event kobject: 'tx-0' (00000000064f949e): kobject_uevent_env kobject: 'tx-0' (00000000064f949e): fill_kobj_path: path = '/devices/virtual/net/ppp1953527154/queues/tx-0' kobject: 'tx-0' (00000000064f949e): auto cleanup kobject_del kobject: 'tx-0' (00000000064f949e): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000f51f34ec): kobject_cleanup, parent (null) kobject: 'queues' (00000000f51f34ec): calling ktype release kobject: 'queues' (00000000f51f34ec): kset_release kobject: 'queues': free name kobject: 'ppp1953527154' (00000000534ed01f): kobject_uevent_env kobject: 'ppp1953527154' (00000000534ed01f): fill_kobj_path: path = '/devices/virtual/net/ppp1953527154' kobject: 'ppp1953527154' (00000000534ed01f): kobject_cleanup, parent (null) kobject: 'ppp1953527154' (00000000534ed01f): calling ktype release kobject: 'ppp1953527154': free name kobject: 'rx-0' (000000005c1ed5b8): kobject_cleanup, parent 000000006a5216fe kobject: 'rx-0' (000000005c1ed5b8): auto cleanup 'remove' event kobject: 'rx-0' (000000005c1ed5b8): kobject_uevent_env kobject: 'rx-0' (000000005c1ed5b8): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/rx-0' kobject: 'rx-0' (000000005c1ed5b8): auto cleanup kobject_del kobject: 'rx-0' (000000005c1ed5b8): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000fbb2abe7): kobject_cleanup, parent 000000006a5216fe kobject: 'tx-0' (00000000fbb2abe7): auto cleanup 'remove' event kobject: 'tx-0' (00000000fbb2abe7): kobject_uevent_env kobject: 'tx-0' (00000000fbb2abe7): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/tx-0' kobject: 'tx-0' (00000000fbb2abe7): auto cleanup kobject_del kobject: 'tx-0' (00000000fbb2abe7): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (000000006a5216fe): kobject_cleanup, parent (null) kobject: 'queues' (000000006a5216fe): calling ktype release kobject: 'queues' (000000006a5216fe): kset_release kobject: 'queues': free name kobject: 'ppp0' (000000001df81b48): kobject_uevent_env kobject: 'ppp0' (000000001df81b48): fill_kobj_path: path = '/devices/virtual/net/ppp0' kobject: 'loop1' (00000000addfbd4b): kobject_uevent_env kobject: 'loop1' (00000000addfbd4b): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'ppp0' (000000001df81b48): kobject_cleanup, parent (null) kobject: 'ppp0' (000000001df81b48): calling ktype release kobject: 'ppp0': free name kobject: 'loop0' (00000000f9422554): kobject_uevent_env kobject: 'loop0' (00000000f9422554): fill_kobj_path: path = '/devices/virtual/block/loop0' net_ratelimit: 24 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 IPVS: ftp: loaded support on port[0] = 21 kobject: 'lo' (00000000216b295f): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'lo' (00000000216b295f): kobject_uevent_env kobject: 'lo' (00000000216b295f): fill_kobj_path: path = '/devices/virtual/net/lo' kobject: 'queues' (000000004360f78b): kobject_add_internal: parent: 'lo', set: '' kobject: 'queues' (000000004360f78b): kobject_uevent_env kobject: 'queues' (000000004360f78b): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000da44935f): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000da44935f): kobject_uevent_env kobject: 'rx-0' (00000000da44935f): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' kobject: 'tx-0' (0000000004e5fb51): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (0000000004e5fb51): kobject_uevent_env kobject: 'tx-0' (0000000004e5fb51): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' kobject: 'tunl0' (000000002b8e33fd): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'tunl0' (000000002b8e33fd): kobject_uevent_env kobject: 'tunl0' (000000002b8e33fd): fill_kobj_path: path = '/devices/virtual/net/tunl0' kobject: 'queues' (000000008b3807cc): kobject_add_internal: parent: 'tunl0', set: '' kobject: 'queues' (000000008b3807cc): kobject_uevent_env kobject: 'queues' (000000008b3807cc): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (0000000089947b22): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (0000000089947b22): kobject_uevent_env kobject: 'rx-0' (0000000089947b22): fill_kobj_path: path = '/devices/virtual/net/tunl0/queues/rx-0' kobject: 'tx-0' (00000000077eedf5): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000077eedf5): kobject_uevent_env kobject: 'tx-0' (00000000077eedf5): fill_kobj_path: path = '/devices/virtual/net/tunl0/queues/tx-0' kobject: 'gre0' (000000001375801a): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'gre0' (000000001375801a): kobject_uevent_env kobject: 'gre0' (000000001375801a): fill_kobj_path: path = '/devices/virtual/net/gre0' kobject: 'queues' (00000000778b8739): kobject_add_internal: parent: 'gre0', set: '' kobject: 'queues' (00000000778b8739): kobject_uevent_env kobject: 'queues' (00000000778b8739): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000007f359942): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000007f359942): kobject_uevent_env kobject: 'rx-0' (000000007f359942): fill_kobj_path: path = '/devices/virtual/net/gre0/queues/rx-0' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'tx-0' (000000009419f250): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000009419f250): kobject_uevent_env kobject: 'tx-0' (000000009419f250): fill_kobj_path: path = '/devices/virtual/net/gre0/queues/tx-0' kobject: 'gretap0' (0000000058e4d633): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'gretap0' (0000000058e4d633): kobject_uevent_env kobject: 'gretap0' (0000000058e4d633): fill_kobj_path: path = '/devices/virtual/net/gretap0' kobject: 'queues' (00000000dbeb9118): kobject_add_internal: parent: 'gretap0', set: '' kobject: 'queues' (00000000dbeb9118): kobject_uevent_env kobject: 'queues' (00000000dbeb9118): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (0000000055512152): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (0000000055512152): kobject_uevent_env kobject: 'rx-0' (0000000055512152): fill_kobj_path: path = '/devices/virtual/net/gretap0/queues/rx-0' kobject: 'tx-0' (000000007998e9c8): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000007998e9c8): kobject_uevent_env kobject: 'tx-0' (000000007998e9c8): fill_kobj_path: path = '/devices/virtual/net/gretap0/queues/tx-0' kobject: 'batman_adv' (00000000522abbce): kobject_add_internal: parent: 'gretap0', set: '' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'erspan0' (00000000f5d7a40e): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'erspan0' (00000000f5d7a40e): kobject_uevent_env kobject: 'erspan0' (00000000f5d7a40e): fill_kobj_path: path = '/devices/virtual/net/erspan0' kobject: 'queues' (00000000411a7cb3): kobject_add_internal: parent: 'erspan0', set: '' kobject: 'queues' (00000000411a7cb3): kobject_uevent_env kobject: 'queues' (00000000411a7cb3): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000f48e5fa3): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000f48e5fa3): kobject_uevent_env kobject: 'rx-0' (00000000f48e5fa3): fill_kobj_path: path = '/devices/virtual/net/erspan0/queues/rx-0' kobject: 'tx-0' (00000000220f6dc5): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000220f6dc5): kobject_uevent_env kobject: 'tx-0' (00000000220f6dc5): fill_kobj_path: path = '/devices/virtual/net/erspan0/queues/tx-0' kobject: 'batman_adv' (000000004fc728a7): kobject_add_internal: parent: 'erspan0', set: '' kobject: 'ip_vti0' (00000000d518849f): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'ip_vti0' (00000000d518849f): kobject_uevent_env kobject: 'ip_vti0' (00000000d518849f): fill_kobj_path: path = '/devices/virtual/net/ip_vti0' kobject: 'queues' (00000000c808c4e6): kobject_add_internal: parent: 'ip_vti0', set: '' kobject: 'queues' (00000000c808c4e6): kobject_uevent_env kobject: 'queues' (00000000c808c4e6): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000006a36cfc2): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000006a36cfc2): kobject_uevent_env kobject: 'rx-0' (000000006a36cfc2): fill_kobj_path: path = '/devices/virtual/net/ip_vti0/queues/rx-0' kobject: 'tx-0' (00000000bd4330a3): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000bd4330a3): kobject_uevent_env kobject: 'tx-0' (00000000bd4330a3): fill_kobj_path: path = '/devices/virtual/net/ip_vti0/queues/tx-0' kobject: 'ip6_vti0' (000000007b59aa14): kobject_add_internal: parent: 'net', set: 'devices' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'ip6_vti0' (000000007b59aa14): kobject_uevent_env kobject: 'ip6_vti0' (000000007b59aa14): fill_kobj_path: path = '/devices/virtual/net/ip6_vti0' kobject: 'queues' (00000000e18283d6): kobject_add_internal: parent: 'ip6_vti0', set: '' kobject: 'queues' (00000000e18283d6): kobject_uevent_env kobject: 'queues' (00000000e18283d6): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000002664b814): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000002664b814): kobject_uevent_env kobject: 'rx-0' (000000002664b814): fill_kobj_path: path = '/devices/virtual/net/ip6_vti0/queues/rx-0' kobject: 'tx-0' (00000000fbd9b02a): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000fbd9b02a): kobject_uevent_env kobject: 'tx-0' (00000000fbd9b02a): fill_kobj_path: path = '/devices/virtual/net/ip6_vti0/queues/tx-0' kobject: 'sit0' (00000000cce4cce2): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'sit0' (00000000cce4cce2): kobject_uevent_env kobject: 'sit0' (00000000cce4cce2): fill_kobj_path: path = '/devices/virtual/net/sit0' kobject: 'queues' (00000000a4d56aed): kobject_add_internal: parent: 'sit0', set: '' kobject: 'queues' (00000000a4d56aed): kobject_uevent_env kobject: 'queues' (00000000a4d56aed): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000cae70f23): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000cae70f23): kobject_uevent_env kobject: 'rx-0' (00000000cae70f23): fill_kobj_path: path = '/devices/virtual/net/sit0/queues/rx-0' kobject: 'tx-0' (000000005c3b61ff): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000005c3b61ff): kobject_uevent_env kobject: 'tx-0' (000000005c3b61ff): fill_kobj_path: path = '/devices/virtual/net/sit0/queues/tx-0' kobject: 'ip6tnl0' (0000000064fdfd05): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'ip6tnl0' (0000000064fdfd05): kobject_uevent_env kobject: 'ip6tnl0' (0000000064fdfd05): fill_kobj_path: path = '/devices/virtual/net/ip6tnl0' kobject: 'queues' (000000003367504d): kobject_add_internal: parent: 'ip6tnl0', set: '' kobject: 'queues' (000000003367504d): kobject_uevent_env kobject: 'queues' (000000003367504d): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (0000000078d76954): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (0000000078d76954): kobject_uevent_env kobject: 'rx-0' (0000000078d76954): fill_kobj_path: path = '/devices/virtual/net/ip6tnl0/queues/rx-0' kobject: 'tx-0' (0000000004473559): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (0000000004473559): kobject_uevent_env kobject: 'tx-0' (0000000004473559): fill_kobj_path: path = '/devices/virtual/net/ip6tnl0/queues/tx-0' kobject: 'ip6gre0' (000000006f712aa8): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'ip6gre0' (000000006f712aa8): kobject_uevent_env kobject: 'ip6gre0' (000000006f712aa8): fill_kobj_path: path = '/devices/virtual/net/ip6gre0' kobject: 'queues' (00000000b650df2f): kobject_add_internal: parent: 'ip6gre0', set: '' kobject: 'queues' (00000000b650df2f): kobject_uevent_env kobject: 'queues' (00000000b650df2f): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000004aebe69d): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000004aebe69d): kobject_uevent_env kobject: 'rx-0' (000000004aebe69d): fill_kobj_path: path = '/devices/virtual/net/ip6gre0/queues/rx-0' kobject: 'tx-0' (000000004f2e3fcf): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000004f2e3fcf): kobject_uevent_env kobject: 'tx-0' (000000004f2e3fcf): fill_kobj_path: path = '/devices/virtual/net/ip6gre0/queues/tx-0' kobject: 'syz_tun' (000000004d86b0b6): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'syz_tun' (000000004d86b0b6): kobject_uevent_env kobject: 'syz_tun' (000000004d86b0b6): fill_kobj_path: path = '/devices/virtual/net/syz_tun' kobject: 'queues' (00000000066e1e8a): kobject_add_internal: parent: 'syz_tun', set: '' kobject: 'queues' (00000000066e1e8a): kobject_uevent_env kobject: 'queues' (00000000066e1e8a): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000aadc7c83): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000aadc7c83): kobject_uevent_env kobject: 'rx-0' (00000000aadc7c83): fill_kobj_path: path = '/devices/virtual/net/syz_tun/queues/rx-0' kobject: 'tx-0' (0000000098bbf066): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (0000000098bbf066): kobject_uevent_env kobject: 'tx-0' (0000000098bbf066): fill_kobj_path: path = '/devices/virtual/net/syz_tun/queues/tx-0' kobject: 'batman_adv' (00000000c27acfb1): kobject_add_internal: parent: 'syz_tun', set: ''