Warning: Permanently added '10.128.1.135' (ED25519) to the list of known hosts. executing program [ 204.796890][ T3984] loop0: detected capacity change from 0 to 32768 [ 204.888567][ T3984] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 204.890887][ T3984] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 204.900432][ T3984] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 204.905159][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 204.907381][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 204.935932][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 28ms [ 204.938163][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 204.939852][ T3984] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 428.035545][ T27] INFO: task syz-executor637:3983 blocked for more than 143 seconds. [ 428.037630][ T27] Not tainted 5.15.160-syzkaller #0 [ 428.039098][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 428.041397][ T27] task:syz-executor637 state:D stack: 0 pid: 3983 ppid: 3981 flags:0x00000004 [ 428.043858][ T27] Call trace: [ 428.044707][ T27] __switch_to+0x308/0x5e8 [ 428.046063][ T27] __schedule+0xf10/0x1e48 [ 428.047269][ T27] schedule+0x11c/0x1c8 [ 428.048380][ T27] schedule_timeout+0x1d8/0x344 [ 428.049662][ T27] gfs2_gl_hash_clear+0x180/0x2f4 [ 428.050991][ T27] gfs2_put_super+0x5e4/0x684 [ 428.052157][ T27] generic_shutdown_super+0x130/0x29c [ 428.053511][ T27] kill_block_super+0x70/0xdc [ 428.054661][ T27] gfs2_kill_sb+0xc0/0xd4 [ 428.055844][ T27] deactivate_locked_super+0xb8/0x13c [ 428.057237][ T27] deactivate_super+0x108/0x128 [ 428.058418][ T27] cleanup_mnt+0x3c0/0x474 [ 428.059553][ T27] __cleanup_mnt+0x20/0x30 [ 428.060675][ T27] task_work_run+0x130/0x1e4 [ 428.061828][ T27] do_notify_resume+0x262c/0x32b8 [ 428.063107][ T27] el0_svc+0xfc/0x1f0 [ 428.064152][ T27] el0t_64_sync_handler+0x84/0xe4 [ 428.065614][ T27] el0t_64_sync+0x1a0/0x1a4 [ 428.066895][ T27] [ 428.066895][ T27] Showing all locks held in the system: [ 428.069033][ T27] 1 lock held by khungtaskd/27: [ 428.070250][ T27] #0: ffff800014b214a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 428.072707][ T27] 2 locks held by getty/3738: [ 428.073954][ T27] #0: ffff0000d2f34098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 428.076586][ T27] #1: ffff800018e302e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 [ 428.079136][ T27] 1 lock held by syz-executor637/3983: [ 428.080583][ T27] #0: ffff0000ca2ec0e0 (&type->s_umount_key#41){++++}-{3:3}, at: deactivate_super+0x100/0x128 [ 428.083292][ T27] [ 428.083858][ T27] ============================================= [ 428.083858][ T27] [ 428.086117][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 428.087858][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.160-syzkaller #0 [ 428.089853][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 428.092442][ T27] Call trace: [ 428.093291][ T27] dump_backtrace+0x0/0x530 [ 428.094366][ T27] show_stack+0x2c/0x3c [ 428.095422][ T27] dump_stack_lvl+0x108/0x170 [ 428.096575][ T27] dump_stack+0x1c/0x58 [ 428.097663][ T27] panic+0x304/0x8bc [ 428.098692][ T27] hung_task_panic+0x0/0x2c [ 428.099913][ T27] kthread+0x37c/0x45c [ 428.100974][ T27] ret_from_fork+0x10/0x20 [ 428.102128][ T27] SMP: stopping secondary CPUs [ 428.103382][ T27] Kernel Offset: disabled [ 428.104472][ T27] CPU features: 0x0,000081c1,21302e40 [ 428.105899][ T27] Memory Limit: none [ 428.434387][ T27] Rebooting in 86400 seconds..