INFO: task jfsCommit:277 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit state:D stack:26776 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
INFO: task syz-executor:4190 blocked for more than 146 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21840 pid: 4190 ppid: 1 flags:0x00004004
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 fs/jfs/jfs_imap.c:2672 [inline]
diRead+0x1fb/0xbb0 fs/jfs/jfs_imap.c:316
jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
jfs_lookup+0x21d/0x420 fs/jfs/namei.c:1469
__lookup_slow+0x29d/0x410 fs/namei.c:1671
lookup_slow+0x53/0x70 fs/namei.c:1688
walk_component+0x319/0x460 fs/namei.c:1984
lookup_last fs/namei.c:2439 [inline]
path_lookupat+0x169/0x440 fs/namei.c:2463
filename_lookup+0x214/0x540 fs/namei.c:2492
user_path_at_empty+0x40/0x190 fs/namei.c:2891
user_path_at include/linux/namei.h:57 [inline]
ksys_umount fs/namespace.c:1786 [inline]
__do_sys_umount fs/namespace.c:1794 [inline]
__se_sys_umount fs/namespace.c:1792 [inline]
__x64_sys_umount+0xf9/0x170 fs/namespace.c:1792
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ff102c879d7
RSP: 002b:00007ffe8c591108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff102c879d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe8c5911c0
RBP: 00007ffe8c5911c0 R08: 00007ffe8c5921c0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe8c5922b0
R13: 00007ff102d1c050 R14: 000000000003f9c7 R15: 00007ffe8c593380
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/277:
#0: ffff88801afb0920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2d6/0x2430 fs/jfs/jfs_imap.c:889
#1: ffff88806230a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x2f4/0x2430 fs/jfs/jfs_imap.c:894
2 locks held by kworker/0:2/1107:
#0: ffff888016c72138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x761/0x1010 kernel/workqueue.c:-1
#1: ffffc90005547d00 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x79f/0x1010 kernel/workqueue.c:2285
2 locks held by getty/3954:
#0: ffff88807f583098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002cf62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5df/0x1a70 drivers/tty/n_tty.c:2158
2 locks held by syz-executor/4190:
#0: ffff88806230b3c0 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
#0: ffff88806230b3c0 (&type->i_mutex_dir_key#16){++++}-{3:3}, at: lookup_slow+0x46/0x70 fs/namei.c:1687
#1: ffff88806230a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diRead+0x136/0xbb0 fs/jfs/jfs_imap.c:315
2 locks held by kworker/u4:18/5394:
1 lock held by syz-executor/5503:
#0: ffffffff8c323528 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#0: ffffffff8c323528 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a5/0x750 kernel/rcu/tree_exp.h:845
1 lock held by syz.4.1038/8445:
#0: ffff88804f918e10 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#0: ffff88804f918e10 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:650 [inline]
#0: ffff88804f918e10 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1345
1 lock held by dhcpcd/8462:
#0: ffff88807aa04120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1744 [inline]
#0: ffff88807aa04120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xda0 net/packet/af_packet.c:3212
=============================================
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 02/12/2026
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: 8459 Comm: xfsaild/loop5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:169 [inline]
RIP: 0010:unwind_next_frame+0x1ca/0x1d90 arch/x86/kernel/unwind_orc.c:448
Code: f0 0f 86 f5 14 00 00 44 89 f0 4c 8d 24 85 d0 6f 9d 8e 4c 89 e0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 8b 16 00 00 45 8b 24 24 <44> 89 f0 ff c0 4c 8d 3c 85 d0 6f 9d 8e 4c 89 f8 48 c1 e8 03 42 0f
RSP: 0018:ffffc9000316f2e8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000316f3a8 RCX: ffffffff962daf00
RDX: 000000000009007f RSI: ffffffff82f051e7 RDI: ffffffff81350d2c
RBP: ffffffff82f051e6 R08: ffffc9000316f470 R09: 0000000000000007
R10: dffffc0000000000 R11: fffff5200062de81 R12: 000000000005ea02
R13: dffffc0000000000 R14: 000000000001f051 R15: ffffc9000316f3f0
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa0cd8282f8 CR3: 000000001ed53000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x9c/0xd0 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3225 [inline]
slab_alloc mm/slub.c:3233 [inline]
kmem_cache_alloc+0x100/0x290 mm/slub.c:3238
mempool_alloc+0x18d/0x4e0 mm/mempool.c:393
bio_alloc_bioset+0x124/0x870 block/bio.c:466
bio_alloc include/linux/bio.h:424 [inline]
xfs_buf_ioapply_map+0x1ea/0x800 fs/xfs/xfs_buf.c:1443
_xfs_buf_ioapply+0x3aa/0x670 fs/xfs/xfs_buf.c:1554
__xfs_buf_submit+0x307/0x7c0 fs/xfs/xfs_buf.c:1623
xfs_buf_delwri_submit_buffers+0x5fb/0x870 fs/xfs/xfs_buf.c:2136
xfsaild_push fs/xfs/xfs_trans_ail.c:546 [inline]
xfsaild+0x2065/0x2780 fs/xfs/xfs_trans_ail.c:657
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287