Warning: Permanently added '10.128.1.135' (ED25519) to the list of known hosts. executing program [ 663.601208][ T4270] loop0: detected capacity change from 0 to 32768 [ 663.606248][ T4270] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 663.608424][ T4270] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 663.615447][ T4270] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 663.619316][ T14] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 663.621209][ T14] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 663.649405][ T14] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 28ms [ 663.651850][ T14] gfs2: fsid=syz:syz.0: jid=0: Done [ 663.653452][ T4270] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 858.109230][ T28] INFO: task syz-executor143:4269 blocked for more than 143 seconds. [ 858.111452][ T28] Not tainted 6.1.63-syzkaller #0 [ 858.112844][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.115017][ T28] task:syz-executor143 state:D stack:0 pid:4269 ppid:4267 flags:0x00000004 [ 858.117324][ T28] Call trace: [ 858.118146][ T28] __switch_to+0x320/0x754 [ 858.119348][ T28] __schedule+0xee4/0x1c98 [ 858.120526][ T28] schedule+0xc4/0x170 [ 858.121543][ T28] schedule_timeout+0x1d8/0x344 [ 858.122778][ T28] gfs2_gl_hash_clear+0x178/0x2e0 [ 858.124046][ T28] gfs2_put_super+0x640/0x6d4 [ 858.125237][ T28] generic_shutdown_super+0x130/0x328 [ 858.126614][ T28] kill_block_super+0x70/0xdc [ 858.127818][ T28] gfs2_kill_sb+0xc0/0xd4 [ 858.128907][ T28] deactivate_locked_super+0xac/0x124 [ 858.130410][ T28] deactivate_super+0xf0/0x110 [ 858.131619][ T28] cleanup_mnt+0x394/0x41c [ 858.132738][ T28] __cleanup_mnt+0x20/0x30 [ 858.133843][ T28] task_work_run+0x240/0x2f0 [ 858.134992][ T28] do_notify_resume+0x2148/0x3474 [ 858.136244][ T28] el0_svc+0x9c/0x168 [ 858.137298][ T28] el0t_64_sync_handler+0x84/0xf0 [ 858.138555][ T28] el0t_64_sync+0x18c/0x190 [ 858.139783][ T28] [ 858.139783][ T28] Showing all locks held in the system: [ 858.141741][ T28] 1 lock held by rcu_tasks_kthre/12: [ 858.143061][ T28] #0: ffff8000159f4df0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 858.145741][ T28] 1 lock held by rcu_tasks_trace/13: [ 858.147077][ T28] #0: ffff8000159f55f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 858.149954][ T28] 1 lock held by khungtaskd/28: [ 858.151182][ T28] #0: ffff8000159f4c20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 858.153585][ T28] 2 locks held by getty/3987: [ 858.154769][ T28] #0: ffff0000d07cf098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 858.157239][ T28] #1: ffff80001bcc02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 [ 858.159900][ T28] 1 lock held by syz-executor143/4269: [ 858.161287][ T28] #0: ffff0000d92220e0 (&type->s_umount_key#40){++++}-{3:3}, at: deactivate_super+0xe8/0x110 [ 858.163890][ T28] [ 858.164475][ T28] ============================================= [ 858.164475][ T28] [ 858.166609][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 858.168343][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.63-syzkaller #0 [ 858.170334][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 858.172944][ T28] Call trace: [ 858.173772][ T28] dump_backtrace+0x1c8/0x1f4 [ 858.175011][ T28] show_stack+0x2c/0x3c [ 858.176101][ T28] dump_stack_lvl+0x108/0x170 [ 858.177462][ T28] dump_stack+0x1c/0x58 [ 858.178533][ T28] panic+0x300/0x7fc [ 858.179533][ T28] hung_task_panic+0x0/0x2c [ 858.180699][ T28] kthread+0x250/0x2d8 [ 858.181758][ T28] ret_from_fork+0x10/0x20 [ 858.182896][ T28] SMP: stopping secondary CPUs [ 858.184167][ T28] Kernel Offset: disabled [ 858.185279][ T28] CPU features: 0x00000,02070084,26017203 [ 858.186773][ T28] Memory Limit: none [ 858.531132][ T28] Rebooting in 86400 seconds..