INFO: task jfsCommit:277 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:26824 pid:  277 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11bb/0x4390 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 io_schedule+0x7c/0xd0 kernel/sched/core.c:8503
 __lock_metapage+0x1a9/0x380 fs/jfs/jfs_metapage.c:49
 lock_metapage fs/jfs/jfs_metapage.c:63 [inline]
 __get_metapage+0x43e/0x1060 fs/jfs/jfs_metapage.c:640
 diIAGRead+0xce/0x140 fs/jfs/jfs_imap.c:2672
 diFree+0x898/0x2460 fs/jfs/jfs_imap.c:959
 jfs_evict_inode+0x327/0x430 fs/jfs/inode.c:156
 evict+0x485/0x870 fs/inode.c:647
 txLazyCommit fs/jfs/jfs_txnmgr.c:2698 [inline]
 jfs_lazycommit+0x437/0xb20 fs/jfs/jfs_txnmgr.c:2766
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8c11c760 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by jfsCommit/276:
 #0: ffff888026be0920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2a4/0x2460 fs/jfs/jfs_imap.c:889
 #1: ffff88806e47ddb8 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x2c2/0x2460 fs/jfs/jfs_imap.c:894
2 locks held by jfsCommit/277:
 #0: ffff88801da98920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2a4/0x2460 fs/jfs/jfs_imap.c:889
 #1: ffff88806e47a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x2c2/0x2460 fs/jfs/jfs_imap.c:894
2 locks held by getty/3947:
 #0: ffff88814d5ba098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc900021ce2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ba/0x1a30 drivers/tty/n_tty.c:2158
1 lock held by syz-executor.0/4926:
 #0: ffff888026e820e0 (&type->s_umount_key#51){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xe0f/0xe50 kernel/hung_task.c:369
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 0 skipped: idling at default_idle+0xb/0x10 arch/x86/kernel/process.c:729