Warning: Permanently added '10.128.1.224' (ED25519) to the list of known hosts. executing program [ 714.750908][ T27] INFO: task kworker/0:0:7 blocked for more than 143 seconds. [ 714.752893][ T27] Not tainted 5.15.160-syzkaller #0 [ 714.754281][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 714.756410][ T27] task:kworker/0:0 state:D stack: 0 pid: 7 ppid: 2 flags:0x00000008 [ 714.758739][ T27] Workqueue: ipv6_addrconf addrconf_verify_work [ 714.760304][ T27] Call trace: [ 714.762361][ T27] __switch_to+0x308/0x5e8 [ 714.763567][ T27] __schedule+0xf10/0x1e48 [ 714.764682][ T27] schedule+0x11c/0x1c8 [ 714.765707][ T27] schedule_preempt_disabled+0x18/0x2c [ 714.767051][ T27] __mutex_lock_common+0xba0/0x2154 [ 714.768346][ T27] mutex_lock_nested+0xa4/0xf8 [ 714.769523][ T27] rtnl_lock+0x20/0x2c [ 714.770505][ T27] addrconf_verify_work+0x14/0x28 [ 714.773685][ T27] process_one_work+0x790/0x11b8 [ 714.774933][ T27] worker_thread+0x910/0x1034 [ 714.776112][ T27] kthread+0x37c/0x45c [ 714.777118][ T27] ret_from_fork+0x10/0x20 [ 714.778295][ T27] [ 714.778295][ T27] Showing all locks held in the system: [ 714.780282][ T27] 3 locks held by kworker/0:0/7: [ 714.782359][ T27] #0: ffff0000d1f90938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 [ 714.785182][ T27] #1: ffff800018947c00 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 [ 714.787781][ T27] #2: ffff800016a46ca8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c [ 714.789953][ T27] 1 lock held by khungtaskd/27: [ 714.791785][ T27] #0: ffff800014b214a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 714.794221][ T27] 2 locks held by getty/3729: [ 714.795380][ T27] #0: ffff0000d3700098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 714.797792][ T27] #1: ffff80001a15b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 [ 714.800354][ T27] 1 lock held by syz-executor276/3995: [ 714.802428][ T27] [ 714.803004][ T27] ============================================= [ 714.803004][ T27] [ 714.805220][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 714.806906][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.160-syzkaller #0 [ 714.808859][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 714.811416][ T27] Call trace: [ 714.812235][ T27] dump_backtrace+0x0/0x530 [ 714.813419][ T27] show_stack+0x2c/0x3c [ 714.814477][ T27] dump_stack_lvl+0x108/0x170 [ 714.815668][ T27] dump_stack+0x1c/0x58 [ 714.816783][ T27] panic+0x304/0x8bc [ 714.817764][ T27] hung_task_panic+0x0/0x2c [ 714.818906][ T27] kthread+0x37c/0x45c [ 714.819945][ T27] ret_from_fork+0x10/0x20 [ 714.821079][ T27] SMP: stopping secondary CPUs [ 714.822321][ T27] Kernel Offset: disabled [ 714.823424][ T27] CPU features: 0x0,000081c1,21302e40 [ 714.824783][ T27] Memory Limit: none [ 715.183867][ T27] Rebooting in 86400 seconds..