Warning: Permanently added '10.128.0.247' (ED25519) to the list of known hosts. [ 333.306501][ T6033] syz-executor403[6033]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set executing program [ 333.463659][ T6033] loop0: detected capacity change from 0 to 32768 [ 571.418671][ T29] INFO: task kworker/u4:3:41 blocked for more than 143 seconds. [ 571.420831][ T29] Not tainted 6.6.0-rc4-syzkaller-g19af4a4ed414 #0 [ 571.422702][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.424909][ T29] task:kworker/u4:3 state:D stack:0 pid:41 ppid:2 flags:0x00000008 [ 571.427421][ T29] Workqueue: writeback wb_workfn (flush-7:0) [ 571.429966][ T29] Call trace: [ 571.430869][ T29] __switch_to+0x320/0x754 [ 571.432035][ T29] __schedule+0x1364/0x23b4 [ 571.433230][ T29] schedule+0xc4/0x170 [ 571.434306][ T29] schedule_preempt_disabled+0x18/0x2c [ 571.435771][ T29] __mutex_lock_common+0xbd8/0x21a0 [ 571.437129][ T29] mutex_lock_nested+0x2c/0x38 [ 571.438381][ T29] jfs_commit_inode+0x1d4/0x4f8 [ 571.440389][ T29] jfs_write_inode+0x128/0x200 [ 571.441679][ T29] __writeback_single_inode+0x5a8/0x146c [ 571.443131][ T29] writeback_sb_inodes+0x718/0x1010 [ 571.444487][ T29] __writeback_inodes_wb+0xec/0x234 [ 571.445893][ T29] wb_writeback+0x408/0xfc0 [ 571.447059][ T29] wb_workfn+0xc00/0xf9c [ 571.448201][ T29] process_one_work+0x694/0x1204 [ 571.450133][ T29] worker_thread+0x938/0xef4 [ 571.451434][ T29] kthread+0x288/0x310 [ 571.452490][ T29] ret_from_fork+0x10/0x20 [ 571.453741][ T29] [ 571.453741][ T29] Showing all locks held in the system: [ 571.455743][ T29] 1 lock held by khungtaskd/29: [ 571.457036][ T29] #0: ffff80008e373780 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 571.460174][ T29] 4 locks held by kworker/u4:3/41: [ 571.461553][ T29] #0: ffff0000c1bf2138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 [ 571.464345][ T29] #1: ffff800093f87c20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 [ 571.467506][ T29] #2: ffff0000d53560e0 (&type->s_umount_key#44){++++}-{3:3}, at: super_trylock_shared+0x28/0xe4 [ 571.470974][ T29] #3: ffff0000dcbda6c8 (&jfs_ip->commit_mutex){+.+.}-{3:3}, at: jfs_commit_inode+0x1d4/0x4f8 [ 571.473815][ T29] 2 locks held by getty/5781: [ 571.475082][ T29] #0: ffff0000d26060a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 571.477623][ T29] #1: ffff800095c212f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1214 [ 571.480994][ T29] 4 locks held by syz-executor403/6033: [ 571.482419][ T29] [ 571.483014][ T29] ============================================= [ 571.483014][ T29] [ 571.485246][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 571.487031][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc4-syzkaller-g19af4a4ed414 #0 [ 571.489509][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 571.492233][ T29] Call trace: [ 571.493135][ T29] dump_backtrace+0x1b8/0x1e4 [ 571.494418][ T29] show_stack+0x2c/0x44 [ 571.495540][ T29] dump_stack_lvl+0xd0/0x124 [ 571.496827][ T29] dump_stack+0x1c/0x28 [ 571.497930][ T29] panic+0x2d0/0x7bc [ 571.499004][ T29] hung_task_panic+0x0/0x2c [ 571.500257][ T29] kthread+0x288/0x310 [ 571.501362][ T29] ret_from_fork+0x10/0x20 [ 571.502564][ T29] SMP: stopping secondary CPUs [ 571.503858][ T29] Kernel Offset: disabled [ 571.505018][ T29] CPU features: 0x0,00000020,70020043,10017203 [ 571.506746][ T29] Memory Limit: none [ 571.888876][ T29] Rebooting in 86400 seconds..