[ 50.542918][ T133] device veth1_vlan left promiscuous mode [ 50.550782][ T133] device veth0_vlan left promiscuous mode [ 53.934363][ T133] team0 (unregistering): Port device team_slave_1 removed [ 53.950677][ T133] team0 (unregistering): Port device team_slave_0 removed [ 53.962873][ T133] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 53.976186][ T133] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 54.023005][ T133] bond0 (unregistering): Released all slaves [ 55.579762][ T5455] can: request_module (can-proto-0) failed. [ 55.597621][ T5455] can: request_module (can-proto-0) failed. [ 71.189218][ T5] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts. [ 78.095302][ T5891] [ 78.097632][ T5891] ============================================ [ 78.103773][ T5891] WARNING: possible recursive locking detected [ 78.109901][ T5891] 5.11.0-syzkaller #0 Not tainted [ 78.115001][ T5891] -------------------------------------------- [ 78.121818][ T5891] syz-executor331/5891 is trying to acquire lock: [ 78.128305][ T5891] ffff888015ca2c68 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x113/0x18e0 [ 78.137232][ T5891] [ 78.137232][ T5891] but task is already holding lock: [ 78.144572][ T5891] ffff888015ca1468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x2df/0x3a0 [ 78.153937][ T5891] [ 78.153937][ T5891] other info that might help us debug this: [ 78.162220][ T5891] Possible unsafe locking scenario: [ 78.162220][ T5891] [ 78.169663][ T5891] CPU0 [ 78.172921][ T5891] ---- [ 78.176352][ T5891] lock(&pipe->mutex/1); [ 78.180790][ T5891] lock(&pipe->mutex/1); [ 78.185308][ T5891] [ 78.185308][ T5891] *** DEADLOCK *** [ 78.185308][ T5891] [ 78.193809][ T5891] May be due to missing lock nesting notation [ 78.193809][ T5891] [ 78.202343][ T5891] 1 lock held by syz-executor331/5891: [ 78.207777][ T5891] #0: ffff888015ca1468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x2df/0x3a0 [ 78.217621][ T5891] [ 78.217621][ T5891] stack backtrace: [ 78.224019][ T5891] CPU: 0 PID: 5891 Comm: syz-executor331 Not tainted 5.11.0-syzkaller #0 [ 78.232607][ T5891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.242783][ T5891] Call Trace: [ 78.246205][ T5891] dump_stack+0x9a/0xcc [ 78.250340][ T5891] __lock_acquire.cold+0x117/0x3ab [ 78.255915][ T5891] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 78.261984][ T5891] lock_acquire+0x1a8/0x720 [ 78.266605][ T5891] ? pipe_write+0x113/0x18e0 [ 78.271250][ T5891] ? lock_release+0x710/0x710 [ 78.275934][ T5891] __mutex_lock+0x134/0x1110 [ 78.280590][ T5891] ? pipe_write+0x113/0x18e0 [ 78.285157][ T5891] ? pipe_write+0x113/0x18e0 [ 78.290177][ T5891] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 78.296142][ T5891] ? mutex_lock_io_nested+0xf60/0xf60 [ 78.301491][ T5891] ? find_held_lock+0x2d/0x110 [ 78.306756][ T5891] ? aa_file_perm+0x413/0xd30 [ 78.311417][ T5891] pipe_write+0x113/0x18e0 [ 78.315813][ T5891] ? aa_file_perm+0x42e/0xd30 [ 78.320478][ T5891] ? generic_pipe_buf_release+0x1c0/0x1c0 [ 78.326430][ T5891] ? lock_downgrade+0x6d0/0x6d0 [ 78.331436][ T5891] ? aa_path_link+0x2e0/0x2e0 [ 78.336293][ T5891] ? lockdep_hardirqs_on_prepare+0x17b/0x400 [ 78.342281][ T5891] do_iter_readv_writev+0x333/0x6d0 [ 78.347483][ T5891] ? pipe_wait_readable+0x2df/0x3a0 [ 78.352746][ T5891] ? new_sync_write+0x5f0/0x5f0 [ 78.357575][ T5891] ? mutex_lock_io_nested+0xf60/0xf60 [ 78.363062][ T5891] ? security_file_permission+0x49/0x460 [ 78.368983][ T5891] do_iter_write+0x12a/0x5b0 [ 78.373560][ T5891] ? splice_from_pipe_next.part.0+0x22e/0x4e0 [ 78.379747][ T5891] iter_file_splice_write+0x58d/0xad0 [ 78.385112][ T5891] ? generic_splice_sendpage+0x120/0x120 [ 78.390720][ T5891] ? __lock_acquire+0xbfc/0x57d0 [ 78.395636][ T5891] ? apparmor_file_permission+0x14e/0x450 [ 78.401429][ T5891] ? security_file_permission+0x49/0x460 [ 78.407349][ T5891] do_splice+0x9e0/0x1c50 [ 78.411831][ T5891] ? find_held_lock+0x2d/0x110 [ 78.416667][ T5891] ? splice_from_pipe+0x120/0x120 [ 78.421951][ T5891] ? find_held_lock+0x2d/0x110 [ 78.426949][ T5891] __do_splice+0xf4/0x1b0 [ 78.431266][ T5891] ? do_splice+0x1c50/0x1c50 [ 78.435866][ T5891] __x64_sys_splice+0x14a/0x200 [ 78.440705][ T5891] do_syscall_64+0x2d/0x70 [ 78.445126][ T5891] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 78.451179][ T5891] RIP: 0033:0x7f0e2afbdc99 [ 78.455583][ T5891] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 78.475850][ T5891] RSP: 002b:00007f0e2af70308 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 78.484643][ T5891] RAX: ffffffffffffffda RBX: 00007f0e2b046408 RCX: 00007f0e2afbdc99 [ 78.492604][ T5891] RDX: 0000000000000006 RSI: 0000