Warning: Permanently added '10.128.1.91' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 49.007297] [ 49.008957] ===================================== [ 49.013768] WARNING: bad unlock balance detected! [ 49.018582] 4.14.302-syzkaller #0 Not tainted [ 49.023049] ------------------------------------- [ 49.027950] syz-executor686/11393 is trying to release lock (&file->mut) at: [ 49.035115] [] ucma_destroy_id+0x1eb/0x420 [ 49.040878] but there are no more locks to release! [ 49.045868] [ 49.045868] other info that might help us debug this: [ 49.052506] 1 lock held by syz-executor686/11393: [ 49.057318] #0: (&file->mut){+.+.}, at: [] ucma_destroy_id+0x18c/0x420 [ 49.065707] [ 49.065707] stack backtrace: [ 49.070178] CPU: 0 PID: 11393 Comm: syz-executor686 Not tainted 4.14.302-syzkaller #0 [ 49.078113] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 49.087438] Call Trace: [ 49.089999] dump_stack+0x1b2/0x281 [ 49.093602] ? ucma_destroy_id+0x1eb/0x420 [ 49.097811] lock_release.cold+0x70/0xbf [ 49.101845] ? lock_downgrade+0x740/0x740 [ 49.105966] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 49.111393] __mutex_unlock_slowpath+0x75/0x770 [ 49.116036] ? radix_tree_lookup+0x20/0x20 [ 49.120243] ? __radix_tree_lookup+0x1b5/0x2e0 [ 49.124796] ? wait_for_completion_io+0x10/0x10 [ 49.129440] ucma_destroy_id+0x1eb/0x420 [ 49.133480] ? ucma_join_ip_multicast+0x180/0x180 [ 49.138298] ? __might_fault+0x177/0x1b0 [ 49.142335] ? _copy_from_user+0x96/0x100 [ 49.146455] ? ucma_join_ip_multicast+0x180/0x180 [ 49.151268] ucma_write+0x206/0x2c0 [ 49.154868] ? ucma_set_ib_path+0x510/0x510 [ 49.159161] __vfs_write+0xe4/0x630 [ 49.162762] ? ucma_set_ib_path+0x510/0x510 [ 49.167060] ? kernel_read+0x110/0x110 [ 49.170922] ? common_file_perm+0x3ee/0x580 [ 49.175219] ? security_file_permission+0x82/0x1e0 [ 49.180118] ? rw_verify_area+0xe1/0x2a0 [ 49.184150] vfs_write+0x17f/0x4d0 [ 49.187662] SyS_write+0xf2/0x210 [ 49.191087] ? SyS_read+0x210/0x210 [ 49.194687] ? do_syscall_64+0x4c/0x640 [ 49.198634] ? SyS_read+0x210/0x210 [ 49.202267] do_syscall_64+0x1d5/0x640 [ 49.206136] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 49.211319] RIP: 0033:0x7fc282688769 [ 49.215003] RSP: 002b:00007fc282618208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 49.222681] RAX: ffffffffffffffda RBX: 00007fc2827114d8 RCX: 00007fc282688769 [ 49.229942] RDX: 0000000000000018 RSI: 0000000020000280 RDI: 0000000000000003 [ 49.237184] RBP: 00007fc2827114d0 R08: 00007fc282618700 R09: 0000000000000000 [ 49.244426] R10: 00007fc282618700 R11: 0000000000000246 R12: 00007fc2827114dc [ 49.251669] R13: 00007ffee4d70aef R14: 00007fc282618300 R15: 0000000000022000