Warning: Permanently added '10.128.1.6' (ED25519) to the list of known hosts. executing program [ 126.213821][ T4042] loop0: detected capacity change from 0 to 32768 [ 126.298098][ T4042] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 126.300057][ T4042] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 126.308433][ T4042] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 126.312587][ T1534] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 126.314179][ T1534] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 126.359668][ T1534] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 45ms [ 126.361769][ T1534] gfs2: fsid=syz:syz.0: jid=0: Done [ 126.363232][ T4042] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 284.684984][ T27] INFO: task syz-executor110:4041 blocked for more than 143 seconds. [ 284.686869][ T27] Not tainted 5.15.176-syzkaller #0 [ 284.687948][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 284.689526][ T27] task:syz-executor110 state:D stack: 0 pid: 4041 ppid: 4039 flags:0x0000000c [ 284.691301][ T27] Call trace: [ 284.691908][ T27] __switch_to+0x308/0x588 [ 284.692930][ T27] __schedule+0xf10/0x1e48 [ 284.693812][ T27] schedule+0x11c/0x1c8 [ 284.694587][ T27] schedule_timeout+0x1d8/0x344 [ 284.695630][ T27] gfs2_gl_hash_clear+0x180/0x2f4 [ 284.696676][ T27] gfs2_put_super+0x5e4/0x684 [ 284.697621][ T27] generic_shutdown_super+0x130/0x2f0 [ 284.698775][ T27] kill_block_super+0x70/0xdc [ 284.699688][ T27] gfs2_kill_sb+0xc0/0xd4 [ 284.700598][ T27] deactivate_locked_super+0xb8/0x13c [ 284.701693][ T27] deactivate_super+0x108/0x128 [ 284.702624][ T27] cleanup_mnt+0x3c0/0x474 [ 284.703538][ T27] __cleanup_mnt+0x20/0x30 [ 284.704428][ T27] task_work_run+0x130/0x1e4 [ 284.705449][ T27] do_notify_resume+0x262c/0x32b8 [ 284.706461][ T27] el0_svc+0xfc/0x1f0 [ 284.707239][ T27] el0t_64_sync_handler+0x84/0xe4 [ 284.708278][ T27] el0t_64_sync+0x1a0/0x1a4 [ 284.709128][ T27] [ 284.709128][ T27] Showing all locks held in the system: [ 284.710702][ T27] 1 lock held by khungtaskd/27: [ 284.711765][ T27] #0: ffff800014d32360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 284.713703][ T27] 2 locks held by getty/3786: [ 284.714706][ T27] #0: ffff0000d32e2098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 284.716581][ T27] #1: ffff80001d6ae2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 [ 284.718613][ T27] 1 lock held by syz-executor110/4041: [ 284.719668][ T27] #0: ffff0000d92000e0 (&type->s_umount_key#41){++++}-{3:3}, at: deactivate_super+0x100/0x128 [ 284.721767][ T27] [ 284.722269][ T27] ============================================= [ 284.722269][ T27] [ 284.723835][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 284.725228][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.176-syzkaller #0 [ 284.726800][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 284.728720][ T27] Call trace: [ 284.729320][ T27] dump_backtrace+0x0/0x530 [ 284.730269][ T27] show_stack+0x2c/0x3c [ 284.731069][ T27] dump_stack_lvl+0x108/0x170 [ 284.732023][ T27] dump_stack+0x1c/0x58 [ 284.732841][ T27] panic+0x304/0x8bc [ 284.733621][ T27] hung_task_panic+0x0/0x2c [ 284.734503][ T27] kthread+0x37c/0x45c [ 284.735334][ T27] ret_from_fork+0x10/0x20 [ 284.736243][ T27] SMP: stopping secondary CPUs [ 284.737180][ T27] Kernel Offset: disabled [ 284.738023][ T27] CPU features: 0x8,000081c1,21302e40 [ 284.739071][ T27] Memory Limit: none [ 285.064972][ T27] Rebooting in 86400 seconds..