INFO: task syz-executor.4:21216 blocked for more than 143 seconds.
Not tainted 6.8.0-rc1-syzkaller-00385-g4854cf9c61d0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27312 pid:21216 tgid:21215 ppid:21053 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
__super_lock fs/super.c:56 [inline]
super_lock+0x196/0x400 fs/super.c:120
super_lock_excl fs/super.c:145 [inline]
grab_super+0xaf/0x370 fs/super.c:534
sget_fc+0x1fa/0x770 fs/super.c:793
vfs_get_super fs/super.c:1268 [inline]
get_tree_single+0x2f/0x140 fs/super.c:1300
vfs_get_tree+0x8c/0x2a0 fs/super.c:1784
vfs_cmd_create+0xe4/0x230 fs/fsopen.c:230
__do_sys_fsconfig fs/fsopen.c:476 [inline]
__se_sys_fsconfig+0x967/0xec0 fs/fsopen.c:349
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fb22e87cda9
RSP: 002b:00007fb22f6090c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007fb22e9abf80 RCX: 00007fb22e87cda9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 00007fb22e8c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb22e9abf80 R15: 00007ffcc765eda8
Showing all locks held in the system:
2 locks held by kworker/u4:0/11:
#0: ffff8880b993c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9928988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
1 lock held by khungtaskd/29:
#0: ffffffff8d92f120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d92f120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d92f120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4808:
#0: ffff888028fdb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/1:2/17823:
#0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9001514fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9001514fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
2 locks held by syz-executor.4/20759:
2 locks held by syz-executor.4/21216:
#0: ffff888020fb9c70 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:474 [inline]
#0: ffff888020fb9c70 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x8e6/0xec0 fs/fsopen.c:349
#1: ffff88801e5ea0e0 (&type->s_umount_key#118){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#1: ffff88801e5ea0e0 (&type->s_umount_key#118){+.+.}-{3:3}, at: super_lock+0x196/0x400 fs/super.c:120
2 locks held by syz-executor.4/21568:
#0: ffff888048d4b070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:474 [inline]
#0: ffff888048d4b070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x8e6/0xec0 fs/fsopen.c:349
#1: ffff88801e5ea0e0 (&type->s_umount_key#118){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#1: ffff88801e5ea0e0 (&type->s_umount_key#118){+.+.}-{3:3}, at: super_lock+0x196/0x400 fs/super.c:120
4 locks held by udevd/22095:
#0: ffff8880b993c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9928988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffffffff8da27820 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fs_reclaim_acquire+0x92/0x120 mm/page_alloc.c:3709
#3: ffffffff8d92f120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#3: ffffffff8d92f120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#3: ffffffff8d92f120 (rcu_read_lock){....}-{1:2}, at: page_ext_get+0x20/0x2a0 mm/page_ext.c:508
1 lock held by syz-executor.3/22534:
1 lock held by syz-executor.4/22550:
#0: ffff88801e788b60 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x910 drivers/block/loop.c:1265
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00385-g4854cf9c61d0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22569 Comm: syz-executor.1 Not tainted 6.8.0-rc1-syzkaller-00385-g4854cf9c61d0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:lock_is_held_type+0x13a/0x190
Code: 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 48 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 3e 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0000:ffffc90020d67740 EFLAGS: 00000206
RAX: c51b96a6400a1500 RBX: 0000000000000001 RCX: 0000000080000001
RDX: ffff888027348000 RSI: ffffffff8b6ab760 RDI: ffffffff8bbe9320
RBP: 0000000000000001 R08: ffffffff81c26558 R09: 1ffffd400017e95e
R10: dffffc0000000000 R11: fffff9400017e95f R12: 0000000000000246
R13: ffff888027348000 R14: 00000000ffffffff R15: ffffffff8d92f120
FS: 0000555557042480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8c4b800000 CR3: 000000008ad73000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
xa_entry include/linux/xarray.h:1216 [inline]
xas_reload+0x1a4/0x470 include/linux/xarray.h:1595
next_uptodate_folio+0x202/0xb10 mm/filemap.c:3410
filemap_map_pages+0xfe2/0x1820 mm/filemap.c:3568
do_fault_around mm/memory.c:4696 [inline]
do_read_fault mm/memory.c:4729 [inline]
do_fault mm/memory.c:4868 [inline]
do_pte_missing mm/memory.c:3745 [inline]
handle_pte_fault mm/memory.c:5144 [inline]
__handle_mm_fault+0x4850/0x72b0 mm/memory.c:5285
handle_mm_fault+0x27e/0x770 mm/memory.c:5450
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1507 [inline]
exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f8c4bc35fcf
Code: 48 89 84 24 90 00 00 00 48 89 9c 24 98 00 00 00 4c 8b 35 c4 79 17 00 4d 8d ae 00 00 40 00 4d 39 ec 0f 83 91 06 00 00 4c 89 eb <4d> 8b 2c 24 4d 8d 7c 24 08 4c 89 bc 24 08 01 00 00 49 83 fd ff 0f
RSP: 002b:00007ffd735b75b0 EFLAGS: 00010287
RAX: 00007ffd735b76b8 RBX: 00007f8c4bc00000 RCX: 000000000012d838
RDX: 000000000000014d RSI: 00007ffd735b7590 RDI: 7fffffffffffffff
RBP: 0000000000000001 R08: 0000000000000010 R09: 0000000000000000
R10: 00007ffd735f9080 R11: 000000000003ac08 R12: 00007f8c4b800000
R13: 00007f8c4bc00000 R14: 00007f8c4b800000 R15: 0000000000000001