Warning: Permanently added '10.128.1.67' (ED25519) to the list of known hosts. executing program syzkaller login: [ 44.555206][ T4026] loop0: detected capacity change from 0 to 8192 [ 44.632031][ T4026] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 44.634516][ T4026] REISERFS (device loop0): using ordered data mode [ 44.636147][ T4026] reiserfs: using flush barriers [ 44.638306][ T4026] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 44.643059][ T4026] REISERFS (device loop0): checking transaction log (loop0) [ 44.688332][ T4026] REISERFS (device loop0): Using tea hash to sort names [ 44.690926][ T4026] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 44.726112][ T4026] REISERFS warning (device loop0): vs-13060 reiserfs_update_sd_size: stat data of object [2 4 0x0 SD] (nlink == 1) not found (pos 3) [ 44.729669][ T4026] REISERFS warning (device loop0): vs-13060 reiserfs_update_sd_size: stat data of object [2 4 0x0 SD] (nlink == 1) not found (pos 3) [ 44.733482][ T4026] REISERFS warning: vs-16090 direntry_bytes_number: bytes number is asked for direntry [ 69.631548][ T25] cfg80211: failed to load regulatory.db [ 284.670153][ T27] INFO: task kworker/1:3:3606 blocked for more than 143 seconds. [ 284.672373][ T27] Not tainted 5.15.180-syzkaller #0 [ 284.673856][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 284.676044][ T27] task:kworker/1:3 state:D stack: 0 pid: 3606 ppid: 2 flags:0x00000008 [ 284.678474][ T27] Workqueue: events_long flush_old_commits [ 284.681039][ T27] Call trace: [ 284.681911][ T27] __switch_to+0x308/0x588 [ 284.683061][ T27] __schedule+0xf10/0x1e48 [ 284.684193][ T27] schedule+0x11c/0x1c8 [ 284.685261][ T27] schedule_preempt_disabled+0x18/0x2c [ 284.686636][ T27] __mutex_lock_common+0xba0/0x2154 [ 284.687967][ T27] mutex_lock_nested+0xa4/0xf8 [ 284.689199][ T27] reiserfs_write_lock+0x7c/0xe8 [ 284.691413][ T27] flush_old_commits+0x1b0/0x2b8 [ 284.692687][ T27] process_one_work+0x790/0x11b8 [ 284.694022][ T27] worker_thread+0x910/0x1034 [ 284.695206][ T27] kthread+0x37c/0x45c [ 284.696281][ T27] ret_from_fork+0x10/0x20 [ 284.697424][ T27] [ 284.697424][ T27] Showing all locks held in the system: [ 284.699390][ T27] 1 lock held by khungtaskd/27: [ 284.701555][ T27] #0: ffff800014d51b60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 284.704038][ T27] 4 locks held by kworker/1:3/3606: [ 284.705377][ T27] #0: ffff0000c0021138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 [ 284.708198][ T27] #1: ffff800022a47c00 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 [ 284.712014][ T27] #2: ffff0000da9960e0 (&type->s_umount_key#40){.+.+}-{3:3}, at: flush_old_commits+0xcc/0x2b8 [ 284.714773][ T27] #3: ffff0000c7bdb090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 [ 284.717218][ T27] 2 locks held by getty/3782: [ 284.718430][ T27] #0: ffff0000d379e098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 284.721425][ T27] #1: ffff80001d6fb2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 [ 284.724044][ T27] 3 locks held by syz-executor104/4026: [ 284.725555][ T27] [ 284.726141][ T27] ============================================= [ 284.726141][ T27] [ 284.728252][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 284.730114][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.180-syzkaller #0 [ 284.732205][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 284.734902][ T27] Call trace: [ 284.735766][ T27] dump_backtrace+0x0/0x530 [ 284.736992][ T27] show_stack+0x2c/0x3c [ 284.738060][ T27] dump_stack_lvl+0x108/0x170 [ 284.739248][ T27] dump_stack+0x1c/0x58 [ 284.740344][ T27] panic+0x304/0x8bc [ 284.741370][ T27] hung_task_panic+0x0/0x2c [ 284.742604][ T27] kthread+0x37c/0x45c [ 284.743670][ T27] ret_from_fork+0x10/0x20 [ 284.744889][ T27] SMP: stopping secondary CPUs [ 284.746119][ T27] Kernel Offset: disabled [ 284.747255][ T27] CPU features: 0x8,000081c1,21302e40 [ 284.748631][ T27] Memory Limit: none [ 285.033498][ T27] Rebooting in 86400 seconds..