Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 37.086616][ T4314] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 37.102557][ T4316] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 37.115585][ T4318] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 37.126550][ T4319] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 37.145238][ T4320] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. [ 37.155875][ T4323] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program executing program [ 37.166818][ T4324] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 37.177791][ T4325] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 37.201502][ T4327] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 37.219922][ T4328] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 37.645949][ T4341] block device autoloading is deprecated and will be removed. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 39.588051][ C1] [ 39.588666][ C1] ====================================================== [ 39.590236][ C1] WARNING: possible circular locking dependency detected [ 39.591901][ C1] 6.1.16-syzkaller #0 Not tainted [ 39.593071][ C1] ------------------------------------------------------ [ 39.594704][ C1] syz-executor155/4313 is trying to acquire lock: [ 39.596241][ C1] ffff0000cfd20cc8 (&q->queue_lock){..-.}-{2:2}, at: throtl_pending_timer_fn+0x104/0xdcc [ 39.598644][ C1] [ 39.598644][ C1] but task is already holding lock: [ 39.600291][ C1] ffff800008017c80 ((&sq->pending_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd0/0xcf4 [ 39.602545][ C1] [ 39.602545][ C1] which lock already depends on the new lock. [ 39.602545][ C1] [ 39.604904][ C1] [ 39.604904][ C1] the existing dependency chain (in reverse order) is: [ 39.607028][ C1] [ 39.607028][ C1] -> #2 ((&sq->pending_timer)){+.-.}-{0:0}: [ 39.608955][ C1] del_timer_sync+0x9c/0x210 [ 39.610165][ C1] throtl_pd_free+0x20/0x48 [ 39.611339][ C1] blkcg_deactivate_policy+0x2d8/0x4bc [ 39.612756][ C1] blk_throtl_exit+0x9c/0x13c [ 39.613974][ C1] blkcg_exit_disk+0x4c/0x5c [ 39.615204][ C1] disk_release+0x170/0x2d8 [ 39.616454][ C1] device_release+0x8c/0x1ac [ 39.617664][ C1] kobject_put+0x2a8/0x41c [ 39.618811][ C1] put_device+0x28/0x40 [ 39.619889][ C1] put_disk+0x4c/0x64 [ 39.620895][ C1] nbd_dev_remove_work+0x50/0xe8 [ 39.622162][ C1] process_one_work+0x868/0x16f4 [ 39.623410][ C1] worker_thread+0x8e4/0xfec [ 39.624601][ C1] kthread+0x24c/0x2d4 [ 39.625706][ C1] ret_from_fork+0x10/0x20 [ 39.626822][ C1] [ 39.626822][ C1] -> #1 (&blkcg->lock){....}-{2:2}: [ 39.628657][ C1] _raw_spin_lock+0x54/0x6c [ 39.629842][ C1] blkg_create+0x9f4/0x1158 [ 39.631047][ C1] blkcg_init_disk+0xe4/0x32c [ 39.632405][ C1] __alloc_disk_node+0x26c/0x484 [ 39.633713][ C1] __blk_alloc_disk+0x40/0xbc [ 39.634926][ C1] brd_alloc+0x2ac/0x5c8 [ 39.636045][ C1] brd_init+0x108/0x1c4 [ 39.637196][ C1] do_one_initcall+0x310/0xda4 [ 39.638506][ C1] do_initcall_level+0x154/0x214 [ 39.639896][ C1] do_initcalls+0x58/0xac [ 39.640987][ C1] do_basic_setup+0x8c/0xa0 [ 39.642282][ C1] kernel_init_freeable+0x3a4/0x528 [ 39.643769][ C1] kernel_init+0x24/0x29c [ 39.644989][ C1] ret_from_fork+0x10/0x20 [ 39.646088][ C1] [ 39.646088][ C1] -> #0 (&q->queue_lock){..-.}-{2:2}: [ 39.647852][ C1] __lock_acquire+0x3338/0x764c [ 39.649163][ C1] lock_acquire+0x300/0x8e4 [ 39.650352][ C1] _raw_spin_lock_irq+0x70/0x9c [ 39.651737][ C1] throtl_pending_timer_fn+0x104/0xdcc [ 39.653114][ C1] call_timer_fn+0x270/0xcf4 [ 39.654309][ C1] __run_timers+0x554/0x718 [ 39.655454][ C1] run_timer_softirq+0x7c/0x114 [ 39.656718][ C1] __do_softirq+0x37c/0xff4 [ 39.657869][ C1] ____do_softirq+0x14/0x20 [ 39.659027][ C1] call_on_irq_stack+0x2c/0x54 [ 39.660224][ C1] do_softirq_own_stack+0x20/0x2c [ 39.661483][ C1] __irq_exit_rcu+0x28c/0x534 [ 39.662682][ C1] irq_exit_rcu+0x14/0x84 [ 39.663838][ C1] el1_interrupt+0x38/0x68 [ 39.665024][ C1] el1h_64_irq_handler+0x18/0x24 [ 39.666322][ C1] el1h_64_irq+0x64/0x68 [ 39.667470][ C1] __free_object+0x1c0/0x868 [ 39.668628][ C1] debug_object_free+0x27c/0x438 [ 39.669986][ C1] hrtimer_nanosleep+0x2d4/0x384 [ 39.671334][ C1] common_nsleep+0xa8/0xc0 [ 39.672421][ C1] __arm64_sys_clock_nanosleep+0x350/0x38c [ 39.673907][ C1] invoke_syscall+0x98/0x2c0 [ 39.675157][ C1] el0_svc_common+0x138/0x258 [ 39.676414][ C1] do_el0_svc+0x64/0x218 [ 39.677557][ C1] el0_svc+0x58/0x168 [ 39.678666][ C1] el0t_64_sync_handler+0x84/0xf0 [ 39.680092][ C1] el0t_64_sync+0x18c/0x190 [ 39.681262][ C1] [ 39.681262][ C1] other info that might help us debug this: [ 39.681262][ C1] [ 39.683731][ C1] Chain exists of: [ 39.683731][ C1] &q->queue_lock --> &blkcg->lock --> (&sq->pending_timer) [ 39.683731][ C1] [ 39.686844][ C1] Possible unsafe locking scenario: [ 39.686844][ C1] [ 39.688689][ C1] CPU0 CPU1 [ 39.689947][ C1] ---- ---- [ 39.691115][ C1] lock((&sq->pending_timer)); [ 39.692289][ C1] lock(&blkcg->lock); [ 39.693870][ C1] lock((&sq->pending_timer)); [ 39.695606][ C1] lock(&q->queue_lock); [ 39.696708][ C1] [ 39.696708][ C1] *** DEADLOCK *** [ 39.696708][ C1] [ 39.698647][ C1] 1 lock held by syz-executor155/4313: [ 39.699922][ C1] #0: ffff800008017c80 ((&sq->pending_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd0/0xcf4 [ 39.702252][ C1] [ 39.702252][ C1] stack backtrace: [ 39.703691][ C1] CPU: 1 PID: 4313 Comm: syz-executor155 Not tainted 6.1.16-syzkaller #0 [ 39.705705][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 39.708075][ C1] Call trace: [ 39.708889][ C1] dump_backtrace+0x1c8/0x1f4 [ 39.710088][ C1] show_stack+0x2c/0x3c [ 39.711033][ C1] dump_stack_lvl+0x108/0x170 [ 39.712174][ C1] dump_stack+0x1c/0x5c [ 39.713233][ C1] print_circular_bug+0x150/0x1b8 [ 39.714411][ C1] check_noncircular+0x2cc/0x378 [ 39.715575][ C1] __lock_acquire+0x3338/0x764c [ 39.716860][ C1] lock_acquire+0x300/0x8e4 [ 39.717898][ C1] _raw_spin_lock_irq+0x70/0x9c [ 39.719115][ C1] throtl_pending_timer_fn+0x104/0xdcc [ 39.720404][ C1] call_timer_fn+0x270/0xcf4 [ 39.721515][ C1] __run_timers+0x554/0x718 [ 39.722605][ C1] run_timer_softirq+0x7c/0x114 [ 39.723754][ C1] __do_softirq+0x37c/0xff4 [ 39.724802][ C1] ____do_softirq+0x14/0x20 [ 39.725872][ C1] call_on_irq_stack+0x2c/0x54 [ 39.727041][ C1] do_softirq_own_stack+0x20/0x2c [ 39.728291][ C1] __irq_exit_rcu+0x28c/0x534 [ 39.729387][ C1] irq_exit_rcu+0x14/0x84 [ 39.730399][ C1] el1_interrupt+0x38/0x68 [ 39.731447][ C1] el1h_64_irq_handler+0x18/0x24 [ 39.732571][ C1] el1h_64_irq+0x64/0x68 [ 39.733593][ C1] __free_object+0x1c0/0x868 [ 39.734711][ C1] debug_object_free+0x27c/0x438 [ 39.735962][ C1] hrtimer_nanosleep+0x2d4/0x384 [ 39.737266][ C1] common_nsleep+0xa8/0xc0 [ 39.738331][ C1] __arm64_sys_clock_nanosleep+0x350/0x38c [ 39.739697][ C1] invoke_syscall+0x98/0x2c0 [ 39.740838][ C1] el0_svc_common+0x138/0x258 [ 39.741999][ C1] do_el0_svc+0x64/0x218 [ 39.743087][ C1] el0_svc+0x58/0x168 [ 39.744155][ C1] el0t_64_sync_handler+0x84/0xf0 [ 39.745365][ C1] el0t_64_sync+0x18c/0x190 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.096816][ T4945] __nla_validate_parse: 249 callbacks suppressed [ 42.096829][ T4945] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.110179][ T4947] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.125488][ T4949] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.138476][ T4951] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.161213][ T4953] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.174983][ T4955] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.197703][ T4958] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.215857][ T4961] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.224116][ T4963] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 42.241858][ T4965] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.103830][ T5740] __nla_validate_parse: 318 callbacks suppressed [ 47.103843][ T5740] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.116257][ T5742] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.129124][ T5744] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.136529][ T5746] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.153390][ T5748] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.170790][ T5750] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.183683][ T5752] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.195057][ T5754] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.207739][ T5756] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program [ 47.223547][ T5758] netlink: 4 bytes leftover after parsing attributes in process `syz-executor155'. executing program executing program executing program executing program [ 47.291276][ T4341] block device autoloading is deprecated and will be removed. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program