[ 9.439125][ T2658] 8021q: adding VLAN 0 to HW filter on device bond0 [ 9.444204][ T2658] eql: remember to turn off Van-Jacobson compression on your slave devices [ 9.471308][ T9] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 9.472767][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller syzkaller login: [ 69.605524][ T109] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.117' (ECDSA) to the list of known hosts. executing program [ 500.254741][ T3109] loop0: detected capacity change from 0 to 2048 [ 500.258226][ T3109] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 500.277089][ T3109] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. [ 714.724674][ T27] INFO: task syz-executor660:3109 blocked for more than 143 seconds. [ 714.726834][ T27] Not tainted 6.1.0-rc6-syzkaller-32662-g6d464646530f #0 [ 714.728393][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 714.729961][ T27] task:syz-executor660 state:D stack:0 pid:3109 ppid:3107 flags:0x00000001 [ 714.731985][ T27] Call trace: [ 714.732835][ T27] __switch_to+0x180/0x298 [ 714.734007][ T27] __schedule+0x408/0x594 [ 714.735168][ T27] schedule+0x64/0xa4 [ 714.736176][ T27] io_schedule+0x38/0xbc [ 714.737230][ T27] bit_wait_io+0x18/0x60 [ 714.738336][ T27] __wait_on_bit_lock+0x6c/0x114 [ 714.739592][ T27] out_of_line_wait_on_bit_lock+0x84/0xac [ 714.741089][ T27] __sync_dirty_buffer+0xe8/0x328 [ 714.742383][ T27] sync_dirty_buffer+0x24/0x34 [ 714.743585][ T27] __ext4_handle_dirty_metadata+0x118/0x3e0 [ 714.745055][ T27] ext4_convert_inline_data_nolock+0x3d8/0x450 [ 714.746541][ T27] ext4_convert_inline_data+0x228/0x30c [ 714.747940][ T27] ext4_fallocate+0xa8/0xc28 [ 714.749156][ T27] vfs_fallocate+0x328/0x38c [ 714.750290][ T27] __arm64_sys_fallocate+0x5c/0xac [ 714.751598][ T27] el0_svc_common+0x138/0x220 [ 714.752817][ T27] do_el0_svc+0x48/0x164 [ 714.753908][ T27] el0_svc+0x58/0x150 [ 714.755042][ T27] el0t_64_sync_handler+0x84/0xf0 [ 714.756532][ T27] el0t_64_sync+0x190/0x194 [ 714.757672][ T27] [ 714.757672][ T27] Showing all locks held in the system: [ 714.759631][ T27] 1 lock held by rcu_tasks_kthre/11: [ 714.760951][ T27] #0: ffff80000d4a4768 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 [ 714.763633][ T27] 1 lock held by rcu_tasks_trace/12: [ 714.764990][ T27] #0: ffff80000d4a4db8 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 [ 714.767821][ T27] 1 lock held by khungtaskd/27: [ 714.769110][ T27] #0: ffff80000d4a4640 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 [ 714.771640][ T27] 2 locks held by getty/2756: [ 714.772738][ T27] #0: ffff0000c5181898 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 [ 714.775266][ T27] #1: ffff80000f6be2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c [ 714.778030][ T27] 3 locks held by syz-executor660/3109: [ 714.779432][ T27] #0: ffff0000ca0c5460 (sb_writers#3){.+.+}-{0:0}, at: vfs_fallocate+0x2e4/0x38c [ 714.781821][ T27] #1: ffff0000cab2a0b0 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0xa0/0xc28 [ 714.784551][ T27] #2: ffff0000cab29d78 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1ac/0x30c [ 714.787680][ T27] [ 714.788255][ T27] ============================================= [ 714.788255][ T27] [ 714.790407][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 714.792161][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc6-syzkaller-32662-g6d464646530f #0 [ 714.794991][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 [ 714.797664][ T27] Call trace: [ 714.798515][ T27] dump_backtrace+0x1c4/0x1f0 [ 714.799772][ T27] show_stack+0x2c/0x54 [ 714.800843][ T27] dump_stack_lvl+0x104/0x16c [ 714.802072][ T27] dump_stack+0x1c/0x58 [ 714.803172][ T27] panic+0x218/0x508 [ 714.804202][ T27] hung_task_panic+0x0/0x2c [ 714.805619][ T27] kthread+0x12c/0x158 [ 714.806706][ T27] ret_from_fork+0x10/0x20 [ 714.807886][ T27] SMP: stopping secondary CPUs [ 714.809153][ T27] Kernel Offset: disabled [ 714.810339][ T27] CPU features: 0x00000,040e0108,4c017203 [ 714.811647][ T27] Memory Limit: none [ 715.037192][ T27] Rebooting in 86400 seconds..