INFO: task jfsCommit:116 blocked for more than 143 seconds.
Not tainted 6.15.0-rc5-syzkaller-00204-g0e1329d4045c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit state:D stack:27352 pid:116 tgid:116 ppid:2 task_flags:0x200040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x168f/0x4c70 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6860
io_schedule+0x81/0xe0 kernel/sched/core.c:7742
__lock_metapage fs/jfs/jfs_metapage.c:51 [inline]
lock_metapage+0x1f3/0x400 fs/jfs/jfs_metapage.c:65
__get_metapage+0x49c/0xdc0 fs/jfs/jfs_metapage.c:640
diIAGRead+0xce/0x140 fs/jfs/jfs_imap.c:2672
diFree+0x983/0x2c40 fs/jfs/jfs_imap.c:959
jfs_evict_inode+0x331/0x440 fs/jfs/inode.c:156
evict+0x501/0x9c0 fs/inode.c:810
txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
jfs_lazycommit+0x43f/0xa90 fs/jfs/jfs_txnmgr.c:2733
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz.7.201:7230 blocked for more than 144 seconds.
Not tainted 6.15.0-rc5-syzkaller-00204-g0e1329d4045c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.201 state:D stack:25000 pid:7230 tgid:7229 ppid:6757 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x168f/0x4c70 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x724/0xe80 kernel/locking/mutex.c:746
diAlloc+0x77a/0x1680 fs/jfs/jfs_imap.c:1385
ialloc+0x8c/0x8f0 fs/jfs/jfs_inode.c:56
jfs_create+0x18d/0xa80 fs/jfs/namei.c:92
lookup_open fs/namei.c:3701 [inline]
open_last_lookups fs/namei.c:3800 [inline]
path_openat+0x14f1/0x3830 fs/namei.c:4036
do_filp_open+0x1fa/0x410 fs/namei.c:4066
do_sys_openat2+0x121/0x1c0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_open fs/open.c:1452 [inline]
__se_sys_open fs/open.c:1448 [inline]
__x64_sys_open+0x11e/0x150 fs/open.c:1448
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f403338e969
RSP: 002b:00007f4034163038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f40335b5fa0 RCX: 00007f403338e969
RDX: 0000000000000000 RSI: 000000000014927e RDI: 0000200000000180
RBP: 00007f4033410ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f40335b5fa0 R15: 00007fff0a22bea8
Showing all locks held in the system:
3 locks held by kworker/u8:0/12:
#0: ffff8880b89399d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:605
#1: ffff8880b8923b08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39e/0x6d0 kernel/sched/psi.c:987
#2: ffff8880b8925558 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x8ee/0xf30 kernel/time/timer.c:1159
1 lock held by khungtaskd/31:
#0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6764
2 locks held by jfsCommit/116:
#0: ffff88805c728920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diFree+0x29f/0x2c40 fs/jfs/jfs_imap.c:889
#1: ffff88807afe41c0 (&jfs_ip->rdwrlock/1){.+.+}-{4:4}, at: diFree+0x2bd/0x2c40 fs/jfs/jfs_imap.c:894
4 locks held by kworker/u8:7/1162:
2 locks held by getty/5585:
#0: ffff888030c570a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900036cb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
1 lock held by syz-executor/7037:
#0: ffffffff8df41338 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#0: ffffffff8df41338 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b7/0x730 kernel/rcu/tree_exp.h:998
3 locks held by syz.7.201/7230:
#0: ffff888023cfc420 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:556
#1: ffff88807afe4f38 (&type->i_mutex_dir_key#14){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88807afe4f38 (&type->i_mutex_dir_key#14){++++}-{4:4}, at: open_last_lookups fs/namei.c:3797 [inline]
#1: ffff88807afe4f38 (&type->i_mutex_dir_key#14){++++}-{4:4}, at: path_openat+0x8da/0x3830 fs/namei.c:4036
#2: ffff88805c728920 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x77a/0x1680 fs/jfs/jfs_imap.c:1385
2 locks held by syz-executor/7436:
#0: ffff8880542880e0 (&type->s_umount_key#75){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880542880e0 (&type->s_umount_key#75){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880542880e0 (&type->s_umount_key#75){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:505
#1: ffffffff8df41200 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570 kernel/rcu/tree.c:3774
5 locks held by rm/9752:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc5-syzkaller-00204-g0e1329d4045c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:437
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5806 Comm: syz-executor Not tainted 6.15.0-rc5-syzkaller-00204-g0e1329d4045c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__debug_object_init+0x191/0x3c0 lib/debugobjects.c:-1
Code: 55 3a 68 fd 48 8b 55 00 48 39 d3 0f 93 c1 48 8d 82 00 80 00 00 48 39 c3 0f 92 c0 20 c8 0f b6 c8 39 4c 24 14 0f 85 11 01 00 00 <48> 8d 7c 24 20 ba 28 00 00 00 31 f6 e8 ee 3c 68 fd 49 8d 6d 10 49
RSP: 0018:ffffc900042ffc98 EFLAGS: 00000046
RAX: ffffc90004300001 RBX: ffffc900042ffd60 RCX: 0000000000000001
RDX: ffffc900042f8000 RSI: ffffffff8bc0fec0 RDI: ffff88805edbf668
RBP: ffff88807a969e20 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200085ff70 R12: ffff888034eba1a0
R13: ffff88805edbf658 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000555593976500(0000) GS:ffff888126100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f29a4872e9c CR3: 0000000032f6a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
debug_hrtimer_init_on_stack kernel/time/hrtimer.c:439 [inline]
debug_setup_on_stack kernel/time/hrtimer.c:477 [inline]
hrtimer_setup_sleeper_on_stack kernel/time/hrtimer.c:2067 [inline]
hrtimer_nanosleep+0xab/0x360 kernel/time/hrtimer.c:2145
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1407 [inline]
__se_sys_clock_nanosleep+0x2ee/0x380 kernel/time/posix-timers.c:1384
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ee39c11e3
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 5e 33 1c 00 00 74 14 b8 e6 00 00 00 0f 05 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007ffc3c18be98 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6ee39c11e3
RDX: 00007ffc3c18beb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000014263590 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc3c18c300
R13: 0000000000000004 R14: 00007ffc3c18beec R15: 00007ffc3c18bf80