Warning: Permanently added '10.128.1.68' (ED25519) to the list of known hosts. executing program [ 41.368696][ T4024] loop0: detected capacity change from 0 to 32768 [ 41.420950][ T4024] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 41.423412][ T4024] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 41.431014][ T4024] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 41.435264][ T21] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 41.437548][ T21] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 41.474464][ T21] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 36ms [ 41.477410][ T21] gfs2: fsid=syz:syz.0: jid=0: Done [ 41.479298][ T4024] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 74.748413][ T13] cfg80211: failed to load regulatory.db [ 284.667156][ T27] INFO: task syz-executor279:4023 blocked for more than 143 seconds. [ 284.669500][ T27] Not tainted 5.15.183-syzkaller #0 [ 284.671125][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 284.673459][ T27] task:syz-executor279 state:D stack: 0 pid: 4023 ppid: 4022 flags:0x00000004 [ 284.676008][ T27] Call trace: [ 284.676879][ T27] __switch_to+0x2f4/0x558 [ 284.678184][ T27] __schedule+0xe00/0x1c0c [ 284.679359][ T27] schedule+0x11c/0x1c8 [ 284.680432][ T27] schedule_timeout+0x180/0x2c8 [ 284.681774][ T27] gfs2_gl_hash_clear+0x174/0x2cc [ 284.683096][ T27] gfs2_put_super+0x614/0x6bc [ 284.684363][ T27] generic_shutdown_super+0x130/0x2f0 [ 284.686115][ T27] kill_block_super+0x70/0xdc [ 284.687557][ T27] gfs2_kill_sb+0xc0/0xd4 [ 284.688694][ T27] deactivate_locked_super+0xb8/0x13c [ 284.690074][ T27] deactivate_super+0xf8/0x118 [ 284.691312][ T27] cleanup_mnt+0x3a4/0x458 [ 284.692509][ T27] __cleanup_mnt+0x20/0x30 [ 284.693713][ T27] task_work_run+0x12c/0x1e0 [ 284.694983][ T27] do_notify_resume+0x24b4/0x3128 [ 284.696425][ T27] el0_svc+0xf0/0x1e0 [ 284.697609][ T27] el0t_64_sync_handler+0xcc/0xe4 [ 284.698918][ T27] el0t_64_sync+0x1a0/0x1a4 [ 284.700117][ T27] [ 284.700117][ T27] Showing all locks held in the system: [ 284.702162][ T27] 1 lock held by khungtaskd/27: [ 284.703482][ T27] #0: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 284.706101][ T27] 2 locks held by getty/3799: [ 284.707553][ T27] #0: ffff0000d3be0098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 284.710191][ T27] #1: ffff80001b7802e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c [ 284.712953][ T27] 1 lock held by syz-executor279/4023: [ 284.714367][ T27] #0: ffff0000d4c420e0 (&type->s_umount_key#41){++++}-{3:3}, at: deactivate_super+0xf0/0x118 [ 284.717225][ T27] [ 284.717833][ T27] ============================================= [ 284.717833][ T27] [ 284.720068][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 284.721841][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.183-syzkaller #0 [ 284.723858][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 284.726575][ T27] Call trace: [ 284.727481][ T27] dump_backtrace+0x0/0x43c [ 284.728716][ T27] show_stack+0x2c/0x3c [ 284.729852][ T27] __dump_stack+0x30/0x40 [ 284.731005][ T27] dump_stack_lvl+0xf8/0x160 [ 284.732209][ T27] dump_stack+0x1c/0x5c [ 284.733332][ T27] panic+0x2e4/0x854 [ 284.734358][ T27] hung_task_panic+0x0/0x2c [ 284.735564][ T27] kthread+0x374/0x454 [ 284.736673][ T27] ret_from_fork+0x10/0x20 [ 284.737869][ T27] SMP: stopping secondary CPUs [ 284.739196][ T27] Kernel Offset: disabled [ 284.740377][ T27] CPU features: 0x8,000081c1,21302e40 [ 284.741856][ T27] Memory Limit: none [ 285.048273][ T27] Rebooting in 86400 seconds..