[ 19.368369][ T3640] 8021q: adding VLAN 0 to HW filter on device bond0 [ 19.375351][ T3640] eql: remember to turn off Van-Jacobson compression on your slave devices [ 19.422640][ T148] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 19.432633][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller syzkaller login: [ 74.745991][ T1528] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.39' (ED25519) to the list of known hosts. executing program [ 661.466005][ T4007] loop0: detected capacity change from 0 to 32768 [ 661.557908][ T4007] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 661.560559][ T4007] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 661.569294][ T4007] gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents in 0ms [ 661.574080][ T1528] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 661.576436][ T1528] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 661.621090][ T1528] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 44ms [ 661.623304][ T1528] gfs2: fsid=syz:syz.0: jid=0: Done [ 661.625072][ T4007] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 858.105049][ T27] INFO: task syz-executor409:4006 blocked for more than 143 seconds. [ 858.107354][ T27] Not tainted 5.15.160-syzkaller #0 [ 858.108863][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 858.111086][ T27] task:syz-executor409 state:D stack: 0 pid: 4006 ppid: 4004 flags:0x0000000c [ 858.113507][ T27] Call trace: [ 858.114359][ T27] __switch_to+0x308/0x5e8 [ 858.115629][ T27] __schedule+0xf10/0x1e48 [ 858.116761][ T27] schedule+0x11c/0x1c8 [ 858.117847][ T27] schedule_timeout+0x1d8/0x344 [ 858.119078][ T27] gfs2_gl_hash_clear+0x180/0x2f4 [ 858.120442][ T27] gfs2_put_super+0x5e4/0x684 [ 858.121621][ T27] generic_shutdown_super+0x130/0x29c [ 858.123022][ T27] kill_block_super+0x70/0xdc [ 858.124248][ T27] gfs2_kill_sb+0xc0/0xd4 [ 858.125541][ T27] deactivate_locked_super+0xb8/0x13c [ 858.126929][ T27] deactivate_super+0x108/0x128 [ 858.128191][ T27] cleanup_mnt+0x3c0/0x474 [ 858.129339][ T27] __cleanup_mnt+0x20/0x30 [ 858.130482][ T27] task_work_run+0x130/0x1e4 [ 858.131670][ T27] do_notify_resume+0x262c/0x32b8 [ 858.132951][ T27] el0_svc+0xfc/0x1f0 [ 858.133971][ T27] el0t_64_sync_handler+0x84/0xe4 [ 858.135433][ T27] el0t_64_sync+0x1a0/0x1a4 [ 858.136589][ T27] [ 858.136589][ T27] Showing all locks held in the system: [ 858.138567][ T27] 1 lock held by khungtaskd/27: [ 858.139784][ T27] #0: ffff800014b214a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 858.142311][ T27] 2 locks held by getty/3735: [ 858.143481][ T27] #0: ffff0000d28bd098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 858.146105][ T27] #1: ffff800018e132e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 [ 858.148684][ T27] 1 lock held by syz-executor409/4006: [ 858.150090][ T27] #0: ffff0000cad8e0e0 (&type->s_umount_key#41){++++}-{3:3}, at: deactivate_super+0x100/0x128 [ 858.152815][ T27] [ 858.153384][ T27] ============================================= [ 858.153384][ T27] [ 858.155683][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 858.157400][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.160-syzkaller #0 [ 858.159403][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 858.161992][ T27] Call trace: [ 858.162806][ T27] dump_backtrace+0x0/0x530 [ 858.163949][ T27] show_stack+0x2c/0x3c [ 858.164955][ T27] dump_stack_lvl+0x108/0x170 [ 858.166213][ T27] dump_stack+0x1c/0x58 [ 858.167310][ T27] panic+0x304/0x8bc [ 858.168319][ T27] hung_task_panic+0x0/0x2c [ 858.169468][ T27] kthread+0x37c/0x45c [ 858.170535][ T27] ret_from_fork+0x10/0x20 [ 858.171726][ T27] SMP: stopping secondary CPUs [ 858.173033][ T27] Kernel Offset: disabled [ 858.174134][ T27] CPU features: 0x0,000081c1,21302e40 [ 858.175573][ T27] Memory Limit: none [ 858.495454][ T27] Rebooting in 86400 seconds..