INFO: task kworker/u8:12:8666 blocked for more than 145 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:12 state:D stack:21560 pid:8666 tgid:8666 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-9p-2)
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
netfs_writepages+0x12b/0x9e0 fs/netfs/write_issue.c:564
do_writepages+0x35f/0x880 mm/page-writeback.c:2683
__writeback_single_inode+0x14f/0x10d0 fs/fs-writeback.c:1680
writeback_sb_inodes+0x820/0x1360 fs/fs-writeback.c:1976
wb_writeback+0x413/0xb80 fs/fs-writeback.c:2156
wb_do_writeback fs/fs-writeback.c:2303 [inline]
wb_workfn+0x410/0x1080 fs/fs-writeback.c:2343
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.7.1115:10858 blocked for more than 147 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1115 state:D stack:27480 pid:10858 tgid:10857 ppid:7396 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:216
sync_inodes_sb+0x28e/0xbd0 fs/fs-writeback.c:2824
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26ef785d29
RSP: 002b:00007f26f0559038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f26ef975fa0 RCX: 00007f26ef785d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f26ef975fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f26ef975fa0 R15: 00007ffdef87f8a8
INFO: task syz.7.1115:10859 blocked for more than 147 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1115 state:D stack:27280 pid:10859 tgid:10857 ppid:7396 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26ef785d29
RSP: 002b:00007f26f0538038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f26ef976080 RCX: 00007f26ef785d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f26ef976080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f26ef976080 R15: 00007ffdef87f8a8
INFO: task syz.7.1115:10864 blocked for more than 147 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1115 state:D stack:27488 pid:10864 tgid:10857 ppid:7396 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26ef785d29
RSP: 002b:00007f26f0517038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f26ef976160 RCX: 00007f26ef785d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f26ef976160 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f26ef976160 R15: 00007ffdef87f8a8
INFO: task syz.7.1115:10867 blocked for more than 147 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1115 state:D stack:27488 pid:10867 tgid:10857 ppid:7396 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26ef785d29
RSP: 002b:00007f26f04f6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f26ef976240 RCX: 00007f26ef785d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f26ef976240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f26ef976240 R15: 00007ffdef87f8a8
INFO: task syz.7.1115:10878 blocked for more than 148 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1115 state:D stack:27488 pid:10878 tgid:10857 ppid:7396 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26ef785d29
RSP: 002b:00007f26f04d5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f26ef976320 RCX: 00007f26ef785d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f26ef976320 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f26ef976320 R15: 00007ffdef87f8a8
INFO: task syz.7.1115:10882 blocked for more than 148 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1115 state:D stack:27488 pid:10882 tgid:10857 ppid:7396 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26ef785d29
RSP: 002b:00007f26ec9f0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f26ef976400 RCX: 00007f26ef785d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f26ef976400 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f26ef976400 R15: 00007ffdef87f8a8
INFO: task syz.7.1115:10885 blocked for more than 148 seconds.
Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.1115 state:D stack:27488 pid:10885 tgid:10857 ppid:7396 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x18f6/0x4cd0 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6907
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
iterate_supers+0xc6/0x190 fs/super.c:934
ksys_sync+0xbd/0x1c0 fs/sync.c:102
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26ef785d29
RSP: 002b:00007f26ec5cd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f26ef9764e0 RCX: 00007f26ef785d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f26ef9764e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f26ef9764e0 R15: 00007ffdef87f8a8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
3 locks held by kworker/u8:3/52:
2 locks held by getty/5586:
#0: ffff8880358220a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.4.420/7571:
#0: ffff88805e738500 (&ctx->wb_lock){+.+.}-{4:4}, at: netfs_writepages+0xcf/0x9e0 fs/netfs/write_issue.c:558
3 locks held by kworker/u8:12/8666:
#0: ffff888020afe948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888020afe948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc90003bcfc60 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90003bcfc60 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffff88805e738500 (&ctx->wb_lock){+.+.}-{4:4}, at: netfs_writepages+0x12b/0x9e0 fs/netfs/write_issue.c:564
2 locks held by syz.7.1115/10858:
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
2 locks held by syz.7.1115/10859:
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
2 locks held by syz.7.1115/10864:
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
2 locks held by syz.7.1115/10867:
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
2 locks held by syz.7.1115/10878:
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
2 locks held by syz.7.1115/10882:
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
2 locks held by syz.7.1115/10885:
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880249c60e0 (&type->s_umount_key#54){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#1: ffff88801d3927d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26f/0xbd0 fs/fs-writeback.c:2822
2 locks held by dhcpcd/10927:
#0: ffff88807ac40e08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:865 [inline]
#0: ffff88807ac40e08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline]
#0: ffff88807ac40e08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1419
#1: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:302 [inline]
#1: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:996
2 locks held by dhcpcd/11016:
#0: ffff88805e4cac08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:865 [inline]
#0: ffff88805e4cac08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline]
#0: ffff88805e4cac08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1419
#1: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#1: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
5 locks held by dhcpcd-run-hook/12521:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 12523 Comm: sed Not tainted 6.13.0-rc6-next-20250107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:mab_mas_cp+0x3a0/0x800 lib/maple_tree.c:2010
Code: f5 49 89 ee 48 8b 44 24 20 49 8d 7c 05 08 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 05 e8 20 c8 39 f6 <49> 83 7c dd 08 00 74 59 e8 43 78 d3 f5 4c 8b 74 24 20 49 83 c6 08
RSP: 0018:ffffc9000c8ee4c8 EFLAGS: 00000246
RAX: 1ffff9200191dda7 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 000000000000000a RDI: ffffc9000c8eed38
RBP: ffffc9000c8eed30 R08: ffffffff8bebc0dc R09: ffffffff8bebbdda
R10: 0000000000000004 R11: ffff88802ce79e00 R12: 000000000000000a
R13: ffffc9000c8eed30 R14: ffffc9000c8eed30 R15: 1ffff9200191dda6
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f783f13f108 CR3: 00000000202c6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mast_split_data+0x1e3/0x7c0 lib/maple_tree.c:3203
mas_push_data+0xb18/0x1020 lib/maple_tree.c:3285
mas_split lib/maple_tree.c:3354 [inline]
mas_commit_b_node+0xdb7/0x1a80 lib/maple_tree.c:3392
mas_wr_bnode lib/maple_tree.c:4053 [inline]
mas_wr_store_entry+0x4f4/0x2520 lib/maple_tree.c:4094
mas_store_prealloc+0xcbb/0x1390 lib/maple_tree.c:5479
vma_iter_store+0x322/0x910 mm/vma.h:395
vma_complete+0x216/0x9a0 mm/vma.c:309
__split_vma+0x9ac/0xb10 mm/vma.c:509
vms_gather_munmap_vmas+0x4df/0x13d0 mm/vma.c:1286
__mmap_prepare mm/vma.c:2239 [inline]
__mmap_region mm/vma.c:2441 [inline]
mmap_region+0xa32/0x2e40 mm/vma.c:2532
do_mmap+0xecc/0x13a0 mm/mmap.c:561
vm_mmap_pgoff+0x214/0x430 mm/util.c:575
ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:607
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f783f167b74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007fff7464e578 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fff7464e5b8 RCX: 00007f783f167b74
RDX: 0000000000000005 RSI: 0000000000123000 RDI: 00007f783eef8000
RBP: 00007fff7464ed10 R08: 0000000000000003 R09: 0000000000028000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007f783f1445c0
R13: 00007fff7464ed98 R14: 0000000000027f38 R15: 0000000000000000