[ 15.157232][ T3893] 8021q: adding VLAN 0 to HW filter on device bond0 [ 15.165185][ T3893] eql: remember to turn off Van-Jacobson compression on your slave devices [ 15.201616][ T9] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 15.204949][ T1509] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller syzkaller login: [ 69.615157][ T14] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.230' (ECDSA) to the list of known hosts. executing program [ 301.363279][ T4241] block nbd0: shutting down sockets [ 571.373325][ T28] INFO: task syz-executor279:4241 blocked for more than 143 seconds. [ 571.375218][ T28] Not tainted 6.1.35-syzkaller #0 [ 571.376378][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.378233][ T28] task:syz-executor279 state:D stack:0 pid:4241 ppid:4240 flags:0x00000009 [ 571.380099][ T28] Call trace: [ 571.380821][ T28] __switch_to+0x320/0x754 [ 571.381778][ T28] __schedule+0xee4/0x1c98 [ 571.382699][ T28] schedule+0xc4/0x170 [ 571.383656][ T28] schedule_timeout+0xb8/0x344 [ 571.384627][ T28] do_wait_for_common+0x30c/0x468 [ 571.385723][ T28] wait_for_completion+0x48/0x60 [ 571.386756][ T28] __flush_workqueue+0x580/0x11c4 [ 571.387870][ T28] nbd_ioctl+0x8dc/0xc40 [ 571.388780][ T28] blkdev_ioctl+0x408/0xb40 [ 571.389762][ T28] __arm64_sys_ioctl+0x14c/0x1c8 [ 571.390832][ T28] invoke_syscall+0x98/0x2c0 [ 571.391948][ T28] el0_svc_common+0x138/0x258 [ 571.392913][ T28] do_el0_svc+0x64/0x218 [ 571.393858][ T28] el0_svc+0x58/0x168 [ 571.394713][ T28] el0t_64_sync_handler+0x84/0xf0 [ 571.395663][ T28] el0t_64_sync+0x18c/0x190 [ 571.396590][ T28] [ 571.396590][ T28] Showing all locks held in the system: [ 571.398218][ T28] 1 lock held by rcu_tasks_kthre/12: [ 571.399372][ T28] #0: ffff800015794df0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 571.401554][ T28] 1 lock held by rcu_tasks_trace/13: [ 571.402669][ T28] #0: ffff8000157955f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 571.405096][ T28] 1 lock held by khungtaskd/28: [ 571.406113][ T28] #0: ffff800015794c20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 571.408120][ T28] 2 locks held by kworker/u5:0/47: [ 571.409224][ T28] #0: ffff0000cea05138 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x664/0x1404 [ 571.411450][ T28] #1: ffff80001b097c20 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x1404 [ 571.413966][ T28] 2 locks held by getty/3978: [ 571.414918][ T28] #0: ffff0000d7748098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 571.416839][ T28] #1: ffff80001ba302f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 [ 571.418991][ T28] [ 571.419457][ T28] ============================================= [ 571.419457][ T28] [ 571.421196][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 571.422629][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.35-syzkaller #0 [ 571.424300][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 571.426537][ T28] Call trace: [ 571.427214][ T28] dump_backtrace+0x1c8/0x1f4 [ 571.428204][ T28] show_stack+0x2c/0x3c [ 571.429121][ T28] dump_stack_lvl+0x108/0x170 [ 571.430099][ T28] dump_stack+0x1c/0x58 [ 571.430989][ T28] panic+0x300/0x7fc [ 571.431840][ T28] hung_task_panic+0x0/0x2c [ 571.432811][ T28] kthread+0x250/0x2d8 [ 571.433689][ T28] ret_from_fork+0x10/0x20 [ 571.434602][ T28] SMP: stopping secondary CPUs [ 571.435648][ T28] Kernel Offset: disabled [ 571.436596][ T28] CPU features: 0x00000,02070084,26017203 [ 571.437790][ T28] Memory Limit: none [ 571.775516][ T28] Rebooting in 86400 seconds..