Warning: Permanently added '10.128.1.115' (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 [ 28.772572] [ 28.774208] ===================================== [ 28.779027] WARNING: bad unlock balance detected! [ 28.783852] 4.14.302-syzkaller #0 Not tainted [ 28.788320] ------------------------------------- [ 28.793135] syz-executor297/8138 is trying to release lock (&file->mut) at: [ 28.800218] [] ucma_destroy_id+0x1eb/0x420 [ 28.805986] but there are no more locks to release! [ 28.810975] [ 28.810975] other info that might help us debug this: [ 28.817611] 1 lock held by syz-executor297/8138: [ 28.822337] #0: (&file->mut){+.+.}, at: [] ucma_destroy_id+0x18c/0x420 [ 28.830723] [ 28.830723] stack backtrace: [ 28.835200] CPU: 1 PID: 8138 Comm: syz-executor297 Not tainted 4.14.302-syzkaller #0 [ 28.843062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 28.852392] Call Trace: [ 28.854958] dump_stack+0x1b2/0x281 [ 28.858560] ? ucma_destroy_id+0x1eb/0x420 [ 28.862769] lock_release.cold+0x70/0xbf [ 28.866805] ? lock_downgrade+0x740/0x740 [ 28.870927] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 28.876356] __mutex_unlock_slowpath+0x75/0x770 [ 28.881006] ? radix_tree_lookup+0x20/0x20 [ 28.885211] ? __radix_tree_lookup+0x1b5/0x2e0 [ 28.889770] ? wait_for_completion_io+0x10/0x10 [ 28.894420] ucma_destroy_id+0x1eb/0x420 [ 28.898453] ? ucma_join_ip_multicast+0x180/0x180 [ 28.903269] ? __might_fault+0x177/0x1b0 [ 28.907307] ? _copy_from_user+0x96/0x100 [ 28.911429] ? ucma_join_ip_multicast+0x180/0x180 [ 28.916245] ucma_write+0x206/0x2c0 [ 28.919846] ? ucma_set_ib_path+0x510/0x510 [ 28.924141] __vfs_write+0xe4/0x630 [ 28.927740] ? ucma_set_ib_path+0x510/0x510 [ 28.932038] ? kernel_read+0x110/0x110 [ 28.935903] ? common_file_perm+0x3ee/0x580 [ 28.940202] ? security_file_permission+0x82/0x1e0 [ 28.945102] ? rw_verify_area+0xe1/0x2a0 [ 28.949136] vfs_write+0x17f/0x4d0 [ 28.952648] SyS_write+0xf2/0x210 [ 28.956073] ? SyS_read+0x210/0x210 [ 28.959672] ? do_syscall_64+0x4c/0x640 [ 28.963619] ? SyS_read+0x210/0x210 [ 28.967246] do_syscall_64+0x1d5/0x640 [ 28.971109] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 28.976273] RIP: 0033:0x7f82791eda39 [ 28.979956] RSP: 002b:00007f827917e308 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 28.987637] RAX: ffffffffffffffda RBX: 00007f8279275418 RCX: 00007f82791eda39 [ 28.994879] RDX: 0000000000000018 RSI: 0000000020000280 RDI: 0000000000000003 [ 29.002120] RBP: 00007f8279275410 R08: 00007f827917e700 R09: 0000000000000000 [ 29.009364] R10: 00007f827917e700 R11: 0000000000000246 R12: 00007f827927541c [ 29.016614] R13: 00007f8279243074 R14: 006d635f616d6472 R15: 0000000000022000