Warning: Permanently added '10.128.1.158' (ED25519) to the list of known hosts. executing program [ 307.461440][ T6109] block nbd0: shutting down sockets [ 571.396382][ T29] INFO: task syz-executor219:6109 blocked for more than 143 seconds. [ 571.398569][ T29] Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 [ 571.400376][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.402628][ T29] task:syz-executor219 state:D stack:0 pid:6109 ppid:6108 flags:0x0000000d [ 571.404946][ T29] Call trace: [ 571.405777][ T29] __switch_to+0x314/0x560 [ 571.407015][ T29] __schedule+0x1364/0x23b4 [ 571.408198][ T29] schedule+0xc4/0x170 [ 571.409287][ T29] schedule_timeout+0xb8/0x348 [ 571.410587][ T29] do_wait_for_common+0x30c/0x468 [ 571.411947][ T29] wait_for_completion+0x48/0x60 [ 571.413225][ T29] __flush_workqueue+0x580/0x11c4 [ 571.414546][ T29] nbd_ioctl+0x8cc/0xc38 [ 571.415625][ T29] blkdev_ioctl+0x3e4/0xae4 [ 571.416865][ T29] __arm64_sys_ioctl+0x14c/0x1c8 [ 571.418138][ T29] invoke_syscall+0x98/0x2b8 [ 571.419312][ T29] el0_svc_common+0x130/0x23c [ 571.420506][ T29] do_el0_svc+0x48/0x58 [ 571.421537][ T29] el0_svc+0x54/0x158 [ 571.422619][ T29] el0t_64_sync_handler+0x84/0xfc [ 571.423880][ T29] el0t_64_sync+0x190/0x194 [ 571.424993][ T29] [ 571.424993][ T29] Showing all locks held in the system: [ 571.427031][ T29] 1 lock held by khungtaskd/29: [ 571.428270][ T29] #0: ffff80008e513840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 571.430682][ T29] 2 locks held by kworker/u5:1/5663: [ 571.432029][ T29] #0: ffff0000c9e19138 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 [ 571.434843][ T29] #1: ffff80009c6e7c20 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 [ 571.437784][ T29] 1 lock held by klogd/5695: [ 571.439017][ T29] #0: ffff0001b41add58 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2d8/0x23b4 [ 571.441417][ T29] 2 locks held by getty/5846: [ 571.442596][ T29] #0: ffff0000d72420a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 571.445093][ T29] #1: ffff800094c002f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 [ 571.447811][ T29] [ 571.448437][ T29] ============================================= [ 571.448437][ T29] [ 571.450592][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 571.452322][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 [ 571.454681][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 571.457237][ T29] Call trace: [ 571.458094][ T29] dump_backtrace+0x1b8/0x1e4 [ 571.459337][ T29] show_stack+0x2c/0x44 [ 571.460443][ T29] dump_stack_lvl+0xd0/0x124 [ 571.461646][ T29] dump_stack+0x1c/0x28 [ 571.462722][ T29] panic+0x2d0/0x7bc [ 571.463762][ T29] hung_task_panic+0x0/0x2c [ 571.464995][ T29] kthread+0x288/0x310 [ 571.466076][ T29] ret_from_fork+0x10/0x20 [ 571.467250][ T29] SMP: stopping secondary CPUs [ 571.468526][ T29] Kernel Offset: disabled [ 571.469668][ T29] CPU features: 0x0,00000020,70020046,21017203 [ 571.471277][ T29] Memory Limit: none [ 571.788649][ T29] Rebooting in 86400 seconds..