Warning: Permanently added '10.128.0.144' (ECDSA) to the list of known hosts. syzkaller login: [ 67.355883][ T8515] IPVS: ftp: loaded support on port[0] = 21 [ 67.518550][ T236] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.526565][ T236] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.555558][ T3151] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 67.572921][ T236] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.581112][ T236] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.590285][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.728393][ C1] [ 67.730734][ C1] ================================ [ 67.735862][ C1] WARNING: inconsistent lock state [ 67.740948][ C1] 5.10.0-rc4-syzkaller #0 Not tainted [ 67.746338][ C1] -------------------------------- [ 67.751629][ C1] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 67.758460][ C1] ksoftirqd/1/16 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 67.764680][ C1] ffff888011589ca8 (&file_data->lock){+.?.}-{2:2}, at: io_file_data_ref_zero+0x75/0x480 [ 67.774444][ C1] {SOFTIRQ-ON-W} state was registered at: [ 67.780151][ C1] lock_acquire+0x2a3/0x8c0 [ 67.784728][ C1] _raw_spin_lock+0x2a/0x40 [ 67.789299][ C1] __do_sys_io_uring_register+0x343a/0x40d0 [ 67.795257][ C1] __do_fast_syscall_32+0x56/0x80 [ 67.800354][ C1] do_fast_syscall_32+0x2f/0x70 [ 67.805265][ C1] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 67.811648][ C1] irq event stamp: 694538 [ 67.815957][ C1] hardirqs last enabled at (694538): [] _raw_spin_unlock_irqrestore+0x42/0x50 [ 67.826429][ C1] hardirqs last disabled at (694537): [] _raw_spin_lock_irqsave+0x4e/0x50 [ 67.836466][ C1] softirqs last enabled at (693994): [] run_ksoftirqd+0x2d/0x50 [ 67.845728][ C1] softirqs last disabled at (693999): [] run_ksoftirqd+0x2d/0x50 [ 67.854999][ C1] [ 67.854999][ C1] other info that might help us debug this: [ 67.863037][ C1] Possible unsafe locking scenario: [ 67.863037][ C1] [ 67.870481][ C1] CPU0 [ 67.873753][ C1] ---- [ 67.877022][ C1] lock(&file_data->lock); [ 67.881510][ C1] [ 67.884944][ C1] lock(&file_data->lock); [ 67.889601][ C1] [ 67.889601][ C1] *** DEADLOCK *** [ 67.889601][ C1] [ 67.897728][ C1] 2 locks held by ksoftirqd/1/16: [ 67.902723][ C1] #0: ffffffff8b337700 (rcu_callback){....}-{0:0}, at: rcu_core+0x576/0xe80 [ 67.911488][ C1] #1: ffffffff8b337820 (rcu_read_lock){....}-{1:2}, at: percpu_ref_put_many.constprop.0+0x0/0x250 [ 67.922156][ C1] [ 67.922156][ C1] stack backtrace: [ 67.928128][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.10.0-rc4-syzkaller #0 [ 67.936386][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.946419][ C1] Call Trace: [ 67.949697][ C1] dump_stack+0x107/0x163 [ 67.954010][ C1] mark_lock.cold+0x32/0x74 [ 67.958504][ C1] ? lock_chain_count+0x20/0x20 [ 67.963333][ C1] ? mark_lock+0xf7/0x24c0 [ 67.967737][ C1] ? __lock_acquire+0x16c4/0x5c00 [ 67.972742][ C1] ? lock_chain_count+0x20/0x20 [ 67.977574][ C1] ? __lock_acquire+0x16c4/0x5c00 [ 67.982580][ C1] __lock_acquire+0x11b1/0x5c00 [ 67.987417][ C1] ? __lock_acquire+0xbe0/0x5c00 [ 67.992336][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 67.998295][ C1] lock_acquire+0x2a3/0x8c0 [ 68.002778][ C1] ? io_file_data_ref_zero+0x75/0x480 [ 68.008126][ C1] ? lock_release+0x710/0x710 [ 68.012782][ C1] ? lock_release+0x710/0x710 [ 68.017437][ C1] ? rcu_core+0x576/0xe80 [ 68.021753][ C1] _raw_spin_lock+0x2a/0x40 [ 68.026236][ C1] ? io_file_data_ref_zero+0x75/0x480 [ 68.031588][ C1] io_file_data_ref_zero+0x75/0x480 [ 68.036767][ C1] ? __percpu_ref_exit+0xa7/0x100 [ 68.041768][ C1] ? rcu_core+0x576/0xe80 [ 68.046077][ C1] percpu_ref_put_many.constprop.0+0x217/0x250 [ 68.052207][ C1] rcu_core+0x5df/0xe80 [ 68.056378][ C1] ? rcu_implicit_dynticks_qs+0x990/0x990 [ 68.062101][ C1] __do_softirq+0x2a0/0x9f6 [ 68.066587][ C1] ? perf_trace_irq_handler_entry+0x500/0x500 [ 68.072631][ C1] run_ksoftirqd+0x2d/0x50 [ 68.077026][ C1] smpboot_thr