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:27184 pid: 277 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11ef/0x43c0 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 io_schedule+0x7c/0xd0 kernel/sched/core.c:8503 __lock_metapage+0x1b8/0x390 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+0x8e1/0x2430 fs/jfs/jfs_imap.c:959 jfs_evict_inode+0x327/0x430 fs/jfs/inode.c:162 evict+0x4c9/0x8d0 fs/inode.c:647 txLazyCommit fs/jfs/jfs_txnmgr.c:2699 [inline] jfs_lazycommit+0x435/0xb40 fs/jfs/jfs_txnmgr.c:2767 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8c31eaa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by jfsCommit/276: #0: ffff88807aa98920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2d6/0x2430 fs/jfs/jfs_imap.c:889 #1: ffff88805ef5ddb8 (&jfs_ip->rdwrlock/1){++++}-{3:3}, at: diFree+0x2f4/0x2430 fs/jfs/jfs_imap.c:894 2 locks held by jfsCommit/277: #0: ffff88805fd10920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2d6/0x2430 fs/jfs/jfs_imap.c:889 #1: ffff888062702638 (&jfs_ip->rdwrlock/1){++++}-{3:3}, at: diFree+0x2f4/0x2430 fs/jfs/jfs_imap.c:894 2 locks held by getty/3949: #0: ffff88802c12e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900025e62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5df/0x1a70 drivers/tty/n_tty.c:2158 1 lock held by syz-executor/4185: #0: ffff8880601e20e0 (&type->s_umount_key#99){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 1 lock held by syz-executor/4193: #0: ffff88807db4e0e0 (&type->s_umount_key#99){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 1 lock held by syz-executor/5027: #0: ffff888022ada0e0 (&type->s_umount_key#99){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 1 lock held by syz-executor/5906: #0: ffff8880797e60e0 (&type->s_umount_key#99){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:365 1 lock held by syz.4.849/7825: ============================================= 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 03/18/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 nmi_cpu_backtrace+0x3a2/0x3d0 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 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4331 Comm: kworker/0:14 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: wg-crypt-wg0 wg_packet_tx_worker RIP: 0010:wg_peer_put+0xe0/0x180 drivers/net/wireguard/peer.c:229 Code: 70 96 35 85 5b 41 5e 41 5f 5d e9 db 55 2f fc bf 01 00 00 00 89 ee e8 cf 8e 43 fc 85 ed 7e 13 e8 66 8b 43 fc 5b 41 5e 41 5f 5d e8 5a 8b 43 fc eb f2 e8 53 8b 43 fc 4c 89 f7 be 03 00 00 00 5b RSP: 0018:ffffc90003a0fbd0 EFLAGS: 00000293 RAX: ffffffff853595aa RBX: ffff88801fb5f000 RCX: ffff888029e68000 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001 RBP: ffff888060357148 R08: ffff888060357793 R09: 1ffff1100c06aef2 R10: dffffc0000000000 R11: ffffed100c06aef3 R12: ffff88801fb5f4d4 R13: dffffc0000000000 R14: ffff88801fb5f000 R15: ffff888060357080 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005632f6c20950 CR3: 000000002aa6a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wg_packet_tx_worker+0x575/0x790 drivers/net/wireguard/send.c:281 process_one_work+0x85f/0x1010 kernel/workqueue.c:2310 worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287