Warning: Permanently added '10.128.0.35' (ED25519) to the list of known hosts. executing program [ 129.197206][ T4045] loop0: detected capacity change from 0 to 32768 [ 129.265841][ T4045] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 129.268484][ T4045] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 129.280413][ T4045] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 129.284491][ T7] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 129.286772][ T7] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 129.318601][ T7] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 31ms [ 129.321198][ T7] gfs2: fsid=syz:syz.0: jid=0: Done [ 129.322982][ T4045] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 284.716448][ T27] INFO: task syz-executor358:4044 blocked for more than 143 seconds. [ 284.718752][ T27] Not tainted 5.15.184-syzkaller #0 [ 284.720388][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 284.722693][ T27] task:syz-executor358 state:D stack: 0 pid: 4044 ppid: 4043 flags:0x00000004 [ 284.725244][ T27] Call trace: [ 284.726172][ T27] __switch_to+0x2f4/0x558 [ 284.727548][ T27] __schedule+0xe00/0x1c0c [ 284.728790][ T27] schedule+0x11c/0x1c8 [ 284.729866][ T27] schedule_timeout+0x180/0x2c8 [ 284.731261][ T27] gfs2_gl_hash_clear+0x174/0x2cc [ 284.732656][ T27] gfs2_put_super+0x614/0x6bc [ 284.733916][ T27] generic_shutdown_super+0x130/0x2f0 [ 284.735352][ T27] kill_block_super+0x70/0xdc [ 284.736723][ T27] gfs2_kill_sb+0xc0/0xd4 [ 284.737925][ T27] deactivate_locked_super+0xb8/0x13c [ 284.739506][ T27] deactivate_super+0xf8/0x118 [ 284.740826][ T27] cleanup_mnt+0x3a4/0x458 [ 284.742025][ T27] __cleanup_mnt+0x20/0x30 [ 284.743247][ T27] task_work_run+0x12c/0x1e0 [ 284.744527][ T27] do_notify_resume+0x24b4/0x3128 [ 284.745944][ T27] el0_svc+0xf0/0x1e0 [ 284.747194][ T27] el0t_64_sync_handler+0xcc/0xe4 [ 284.748541][ T27] el0t_64_sync+0x1a0/0x1a4 [ 284.749753][ T27] [ 284.749753][ T27] Showing all locks held in the system: [ 284.751822][ T27] 1 lock held by khungtaskd/27: [ 284.753152][ T27] #0: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 284.755826][ T27] 2 locks held by getty/3800: [ 284.757235][ T27] #0: ffff0000d3af5098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 284.759890][ T27] #1: ffff80001b7802e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c [ 284.762738][ T27] 1 lock held by syz-executor358/4044: [ 284.764228][ T27] #0: ffff0000c15da0e0 (&type->s_umount_key#41){++++}-{3:3}, at: deactivate_super+0xf0/0x118 [ 284.767210][ T27] [ 284.767837][ T27] ============================================= [ 284.767837][ T27] [ 284.770161][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 284.771969][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.184-syzkaller #0 [ 284.774185][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 284.776939][ T27] Call trace: [ 284.777877][ T27] dump_backtrace+0x0/0x43c [ 284.779142][ T27] show_stack+0x2c/0x3c [ 284.780322][ T27] __dump_stack+0x30/0x40 [ 284.781534][ T27] dump_stack_lvl+0xf8/0x160 [ 284.782822][ T27] dump_stack+0x1c/0x5c [ 284.783985][ T27] panic+0x2e4/0x854 [ 284.785139][ T27] hung_task_panic+0x0/0x2c [ 284.786362][ T27] kthread+0x374/0x454 [ 284.787549][ T27] ret_from_fork+0x10/0x20 [ 284.788747][ T27] SMP: stopping secondary CPUs [ 284.790103][ T27] Kernel Offset: disabled [ 284.791232][ T27] CPU features: 0x8,000081c1,21302e40 [ 284.792680][ T27] Memory Limit: none [ 285.112138][ T27] Rebooting in 86400 seconds..