INFO: task jfsCommit:111 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:27144 pid:111 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
io_schedule+0x80/0xd0 kernel/sched/core.c:9022
__lock_metapage fs/jfs/jfs_metapage.c:50 [inline]
lock_metapage+0x1ec/0x310 fs/jfs/jfs_metapage.c:64
__get_metapage+0x4ca/0xfa0 fs/jfs/jfs_metapage.c:639
diIAGRead+0xce/0x140 fs/jfs/jfs_imap.c:2672
diFree+0x978/0x2c10 fs/jfs/jfs_imap.c:959
jfs_evict_inode+0x32b/0x440 fs/jfs/inode.c:162
evict+0x486/0x870 fs/inode.c:705
txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
jfs_lazycommit+0x42b/0xa60 fs/jfs/jfs_txnmgr.c:2733
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8cd2ff20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by jfsCommit/111:
#0: ffff88802e208920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2a0/0x2c10 fs/jfs/jfs_imap.c:889
#1: ffff88805d8d1cf8 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x2be/0x2c10 fs/jfs/jfs_imap.c:894
2 locks held by getty/5525:
#0: ffff8880312ca0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217
11 locks held by syz-executor/5764:
4 locks held by kworker/u4:52/7063:
#0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:566
#1: ffff8880b8f289c0 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
#1: ffff8880b8f289c0 (psi_seq){-.-.}-{0:0}, at: __schedule+0x20ee/0x44d0 kernel/sched/core.c:6694
#2: ffff8880b8f29598 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x73b/0xdb0 kernel/time/timer.c:1112
#3: ffffffff970d9030 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x6c/0x4b0 lib/debugobjects.c:709
2 locks held by rm/9512:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf41/0xf80 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9512 Comm: rm Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:mt_locked lib/maple_tree.c:807 [inline]
RIP: 0010:mt_slot lib/maple_tree.c:814 [inline]
RIP: 0010:mas_next_slot+0x723/0x980 lib/maple_tree.c:4667
Code: 8b 6d 00 b8 00 03 00 00 21 c5 bf 00 03 00 00 89 ee e8 91 df 30 f7 81 fd 00 03 00 00 75 2c 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 ff e8 b3 49 88 f7 4d 8b 3f 4d 85 ff 74 59 e8 b6 db 30
RSP: 0018:ffffc9000bd1f5b8 EFLAGS: 00000246
RAX: 1ffff110061e6398 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888057863c00 RSI: 0000000000000300 RDI: 0000000000000300
RBP: 0000000000000300 R08: ffff888057863c00 R09: 0000000000000003
R10: 0000000000000002 R11: 0000000000000000 R12: ffff8880631cf600
R13: dffffc0000000000 R14: ffff88805f2f8000 R15: ffff888030f31cc0
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f47db8c9000 CR3: 0000000066f71000 CR4: 00000000003506f0
Call Trace:
vma_next include/linux/mm.h:967 [inline]
validate_mm+0x302/0x420 mm/mmap.c:289
do_vmi_align_munmap+0x148a/0x1660 mm/mmap.c:2597
do_vmi_munmap+0x252/0x2d0 mm/mmap.c:2660
__mmap_region mm/mmap.c:2710 [inline]
mmap_region+0x741/0x2020 mm/mmap.c:2941
do_mmap+0x92f/0x10a0 mm/mmap.c:1385
vm_mmap_pgoff+0x1c0/0x400 mm/util.c:556
ksys_mmap_pgoff+0x520/0x700 mm/mmap.c:1431
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f47dbbea242
Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00
RSP: 002b:00007ffe8fcbd5b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f47db8c6000 RCX: 00007f47dbbea242
RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007f47db8c6000
RBP: 0000000000000812 R08: 0000000000000003 R09: 0000000000006000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffe8fcbd678
R13: 00007f47db8c90c0 R14: 00007ffe8fcbd9f0 R15: 00000fffd1f97aba