Warning: Permanently added '10.128.0.14' (ED25519) to the list of known hosts. executing program [ 124.996071][ T4036] loop0: detected capacity change from 0 to 32768 [ 125.104265][ T4036] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 125.106059][ T4036] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 125.114618][ T4036] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 125.118201][ T1535] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 125.119719][ T1535] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 125.147380][ T1535] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 27ms [ 125.149432][ T1535] gfs2: fsid=syz:syz.0: jid=0: Done [ 125.150780][ T4036] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 284.671032][ T27] INFO: task syz-executor392:4035 blocked for more than 143 seconds. [ 284.672912][ T27] Not tainted 5.15.175-syzkaller #0 [ 284.674076][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 284.675745][ T27] task:syz-executor392 state:D stack: 0 pid: 4035 ppid: 4033 flags:0x0000000c [ 284.677686][ T27] Call trace: [ 284.678364][ T27] __switch_to+0x308/0x588 [ 284.679258][ T27] __schedule+0xf10/0x1e48 [ 284.680292][ T27] schedule+0x11c/0x1c8 [ 284.681199][ T27] schedule_timeout+0x1d8/0x344 [ 284.682242][ T27] gfs2_gl_hash_clear+0x180/0x2f4 [ 284.683247][ T27] gfs2_put_super+0x5e4/0x684 [ 284.684234][ T27] generic_shutdown_super+0x130/0x2f0 [ 284.685406][ T27] kill_block_super+0x70/0xdc [ 284.686438][ T27] gfs2_kill_sb+0xc0/0xd4 [ 284.687349][ T27] deactivate_locked_super+0xb8/0x13c [ 284.688445][ T27] deactivate_super+0x108/0x128 [ 284.689440][ T27] cleanup_mnt+0x3c0/0x474 [ 284.690366][ T27] __cleanup_mnt+0x20/0x30 [ 284.691324][ T27] task_work_run+0x130/0x1e4 [ 284.692268][ T27] do_notify_resume+0x262c/0x32b8 [ 284.693282][ T27] el0_svc+0xfc/0x1f0 [ 284.694107][ T27] el0t_64_sync_handler+0x84/0xe4 [ 284.695143][ T27] el0t_64_sync+0x1a0/0x1a4 [ 284.696034][ T27] [ 284.696034][ T27] Showing all locks held in the system: [ 284.697651][ T27] 1 lock held by khungtaskd/27: [ 284.698694][ T27] #0: ffff800014d42360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 284.700774][ T27] 2 locks held by getty/3783: [ 284.702017][ T27] #0: ffff0000d3655098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 284.704075][ T27] #1: ffff80001d6be2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 [ 284.706140][ T27] 1 lock held by syz-executor392/4035: [ 284.707296][ T27] #0: ffff0000cd2c40e0 (&type->s_umount_key#41){++++}-{3:3}, at: deactivate_super+0x100/0x128 [ 284.709439][ T27] [ 284.709918][ T27] ============================================= [ 284.709918][ T27] [ 284.711756][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 284.713127][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.175-syzkaller #0 [ 284.714770][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 284.716797][ T27] Call trace: [ 284.717547][ T27] dump_backtrace+0x0/0x530 [ 284.718549][ T27] show_stack+0x2c/0x3c [ 284.719432][ T27] dump_stack_lvl+0x108/0x170 [ 284.720331][ T27] dump_stack+0x1c/0x58 [ 284.721234][ T27] panic+0x304/0x8bc [ 284.722117][ T27] hung_task_panic+0x0/0x2c [ 284.723019][ T27] kthread+0x37c/0x45c [ 284.723927][ T27] ret_from_fork+0x10/0x20 [ 284.724900][ T27] SMP: stopping secondary CPUs [ 284.726100][ T27] Kernel Offset: disabled [ 284.727041][ T27] CPU features: 0x8,000081c1,21302e40 [ 284.728182][ T27] Memory Limit: none [ 285.094053][ T27] Rebooting in 86400 seconds..