Warning: Permanently added '10.128.10.12' (ECDSA) to the list of known hosts. executing program [ 500.675909][ T4431] loop0: detected capacity change from 0 to 2048 [ 500.676869][ T4432] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 [ 500.678723][ T4431] EXT4-fs: Ignoring removed nobh option [ 500.690366][ T4431] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. [ 714.717906][ T27] INFO: task syz-executor270:4431 blocked for more than 143 seconds. [ 714.720163][ T27] Not tainted 6.2.0-rc2-syzkaller-16046-gae87308093bc #0 [ 714.722148][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 714.724319][ T27] task:syz-executor270 state:D stack:0 pid:4431 ppid:4430 flags:0x00000001 [ 714.726694][ T27] Call trace: [ 714.727536][ T27] __switch_to+0x180/0x298 [ 714.728737][ T27] __schedule+0x438/0x5a0 [ 714.729901][ T27] schedule+0x64/0xa4 [ 714.730930][ T27] io_schedule+0x38/0xbc [ 714.732017][ T27] bit_wait_io+0x18/0x60 [ 714.733115][ T27] __wait_on_bit_lock+0x6c/0x114 [ 714.734384][ T27] out_of_line_wait_on_bit_lock+0x84/0xac [ 714.735911][ T27] __sync_dirty_buffer+0xe8/0x328 [ 714.737172][ T27] sync_dirty_buffer+0x24/0x34 [ 714.738457][ T27] __ext4_handle_dirty_metadata+0x118/0x3e8 [ 714.739938][ T27] ext4_convert_inline_data_nolock+0x3d8/0x450 [ 714.741472][ T27] ext4_convert_inline_data+0x22c/0x310 [ 714.742912][ T27] ext4_fallocate+0xa8/0xc2c [ 714.744109][ T27] vfs_fallocate+0x328/0x38c [ 714.745260][ T27] ioctl_preallocate+0x16c/0x1bc [ 714.746514][ T27] do_vfs_ioctl+0x123c/0x16a4 [ 714.747753][ T27] __arm64_sys_ioctl+0x98/0x140 [ 714.748983][ T27] el0_svc_common+0x138/0x220 [ 714.750160][ T27] do_el0_svc+0x48/0x140 [ 714.751236][ T27] el0_svc+0x58/0x150 [ 714.752259][ T27] el0t_64_sync_handler+0x84/0xf0 [ 714.753533][ T27] el0t_64_sync+0x190/0x194 [ 714.754677][ T27] [ 714.754677][ T27] Showing all locks held in the system: [ 714.756615][ T27] 1 lock held by rcu_tasks_kthre/11: [ 714.758020][ T27] #0: ffff80000d635648 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 [ 714.760749][ T27] 1 lock held by rcu_tasks_trace/12: [ 714.762077][ T27] #0: ffff80000d635c98 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 [ 714.764988][ T27] 1 lock held by khungtaskd/27: [ 714.766214][ T27] #0: ffff80000d635520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 [ 714.768758][ T27] 1 lock held by klogd/3914: [ 714.769920][ T27] #0: ffff0001fefd1298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x44 [ 714.772492][ T27] 2 locks held by getty/4078: [ 714.773692][ T27] #0: ffff0000c7a7f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 [ 714.776189][ T27] #1: ffff80000f8462f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c [ 714.778844][ T27] 3 locks held by syz-executor270/4431: [ 714.780323][ T27] #0: ffff0000c9653460 (sb_writers#3){.+.+}-{0:0}, at: vfs_fallocate+0x2e4/0x38c [ 714.782709][ T27] #1: ffff0000cafc8400 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0xa0/0xc2c [ 714.785457][ T27] #2: ffff0000cafc80c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x1b0/0x310 [ 714.788185][ T27] [ 714.788767][ T27] ============================================= [ 714.788767][ T27] [ 714.790916][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 714.792705][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.2.0-rc2-syzkaller-16046-gae87308093bc #0 [ 714.795180][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 714.797759][ T27] Call trace: [ 714.798613][ T27] dump_backtrace+0x1c4/0x1f0 [ 714.799849][ T27] show_stack+0x2c/0x3c [ 714.800937][ T27] dump_stack_lvl+0x104/0x16c [ 714.802134][ T27] dump_stack+0x1c/0x58 [ 714.803213][ T27] panic+0x218/0x508 [ 714.804224][ T27] hung_task_panic+0x0/0x2c [ 714.805407][ T27] kthread+0x12c/0x158 [ 714.806493][ T27] ret_from_fork+0x10/0x20 [ 714.807684][ T27] SMP: stopping secondary CPUs [ 714.808962][ T27] Kernel Offset: disabled [ 714.810129][ T27] CPU features: 0x00000,040e0108,4c017203 [ 714.811642][ T27] Memory Limit: none [ 715.050704][ T27] Rebooting in 86400 seconds..