INFO: task syz-executor.4:15828 blocked for more than 143 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24560 pid:15828 tgid:15828 ppid:5119 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
io_schedule+0x8c/0x100 kernel/sched/core.c:8998
folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1273
folio_lock include/linux/pagemap.h:1031 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2082 [inline]
extent_writepages+0xb47/0x26a0 fs/btrfs/extent_io.c:2230
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:387
__filemap_fdatawrite_range mm/filemap.c:420 [inline]
__filemap_fdatawrite mm/filemap.c:426 [inline]
filemap_flush+0x11e/0x170 mm/filemap.c:453
btrfs_release_file+0x117/0x130 fs/btrfs/file.c:1726
__fput+0x3cc/0x9e0 fs/file_table.c:394
__do_sys_close fs/open.c:1587 [inline]
__se_sys_close fs/open.c:1572 [inline]
__x64_sys_close+0x7e/0x100 fs/open.c:1572
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe2b727bbda
RSP: 002b:00007fff1dce4220 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fe2b727bbda
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fe2b739d980 R08: 0000001b33560000 R09: 00007fff1ddbe0b0
R10: 00007fff1ddbe080 R11: 0000000000000293 R12: 000000000010522e
R13: ffffffffffffffff R14: 00007fe2b6e00000 R15: 0000000000104972
</TASK>
INFO: task syz-executor.4:15829 blocked for more than 144 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:20880 pid:15829 tgid:15828 ppid:5119 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
wait_extent_bit fs/btrfs/extent-io-tree.c:799 [inline]
lock_extent+0x69d/0x850 fs/btrfs/extent-io-tree.c:1843
find_lock_delalloc_range+0x4b5/0x970 fs/btrfs/extent_io.c:393
writepage_delalloc+0x17f/0x470 fs/btrfs/extent_io.c:1183
__extent_writepage fs/btrfs/extent_io.c:1440 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2108 [inline]
extent_writepages+0x1210/0x26a0 fs/btrfs/extent_io.c:2230
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:387
__filemap_fdatawrite_range mm/filemap.c:420 [inline]
filemap_fdatawrite_range+0x16e/0x1e0 mm/filemap.c:438
btrfs_fdatawrite_range fs/btrfs/file.c:3863 [inline]
start_ordered_ops fs/btrfs/file.c:1742 [inline]
btrfs_sync_file+0x424/0x1330 fs/btrfs/file.c:1817
generic_write_sync include/linux/fs.h:2653 [inline]
btrfs_do_write_iter+0xbc5/0x1190 fs/btrfs/file.c:1694
do_iter_readv_writev+0x330/0x4a0
do_iter_write+0x1f6/0x8d0 fs/read_write.c:860
iter_file_splice_write+0x86d/0x1010 fs/splice.c:736
do_splice_from fs/splice.c:933 [inline]
direct_splice_actor+0xea/0x1c0 fs/splice.c:1142
splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1088
do_splice_direct+0x2ac/0x3f0 fs/splice.c:1194
do_sendfile+0x62c/0x1000 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe2b727cce9
RSP: 002b:00007fe2b80c80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fe2b739bf80 RCX: 00007fe2b727cce9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007fe2b72c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe2b739bf80 R15: 00007fff1dce4158
</TASK>
INFO: task syz-executor.4:15923 blocked for more than 145 seconds.
Not tainted 6.7.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23544 pid:15923 tgid:15828 ppid:5119 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
io_schedule+0x8c/0x100 kernel/sched/core.c:8998
folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1273
btrfs_page_mkwrite+0x4a4/0xd10 fs/btrfs/inode.c:8148
do_page_mkwrite+0x197/0x470 mm/memory.c:2944
wp_page_shared mm/memory.c:3339 [inline]
do_wp_page+0x1d07/0x4d40 mm/memory.c:3479
handle_pte_fault mm/memory.c:5055 [inline]
__handle_mm_fault mm/memory.c:5180 [inline]
handle_mm_fault+0x1b1c/0x6680 mm/memory.c:5345
do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x2ad/0x870 arch/x86/mm/fault.c:1561
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc9000a1ef550 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000218 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc9000a1ef600 RDI: 00000000200001e0
RBP: ffffc9000a1ef6b0 R08: ffffc9000a1ef637 R09: 1ffff9200143dec6
R10: dffffc0000000000 R11: fffff5200143dec7 R12: 0000000000000038
R13: ffffc9000a1ef600 R14: 00000000200001e0 R15: ffffc9000a1ef600
copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline]
_copy_to_user+0x86/0xa0 lib/usercopy.c:41
copy_to_user include/linux/uaccess.h:191 [inline]
fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:145
emit_last_fiemap_cache fs/btrfs/extent_io.c:2511 [inline]
extent_fiemap+0x1b9c/0x1fe0 fs/btrfs/extent_io.c:3038
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7830
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x19ea/0x2b40 fs/ioctl.c:811
__do_sys_ioctl fs/ioctl.c:869 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe2b727cce9
RSP: 002b:00007fe2b80a70c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe2b739c050 RCX: 00007fe2b727cce9
RDX: 00000000200001c0 RSI: 00000000c020660b RDI: 0000000000000007
RBP: 00007fe2b72c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe2b739c050 R15: 00007fff1dce4158
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:4/58:
#0: ffff888141651d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888141651d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc900015a7d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc900015a7d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#2: ffff88806cd8a0e0 (&type->s_umount_key#52){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:610
2 locks held by kworker/1:2/781:
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc9000362fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc9000362fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
4 locks held by kworker/u4:6/1091:
#0: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9928808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffff8880b9928808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#2: ffff88801ccfe8d8 (&lo->lo_work_lock){..-.}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
#2: ffff88801ccfe8d8 (&lo->lo_work_lock){..-.}-{2:2}, at: loop_process_work+0x1dec/0x22a0 drivers/block/loop.c:1953
#3: ffff8880b993c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
2 locks held by getty/4813:
#0: ffff88802a1120a0 (&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
1 lock held by syz-executor.3/5131:
#0: ffffffff8d9334b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d9334b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:996
1 lock held by syz-executor.4/15829:
#0: ffff88806cd8a418 (sb_writers#13){.+.+}-{0:0}, at: do_sendfile+0x607/0x1000 fs/read_write.c:1253
4 locks held by syz-executor.4/15923:
#0: ffff88806b6c9818 (&sb->s_type->i_mutex_key#20){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88806b6c9818 (&sb->s_type->i_mutex_key#20){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:370
#1: ffff8880588d6a20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff8880588d6a20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5372 [inline]
#1: ffff8880588d6a20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5432
#2: ffff88806cd8a510 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2944
#3:
ffff88806b6c96a0
(
&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8147
3 locks held by syz-executor.5/18954:
1 lock held by syz-executor.4/18957:
#0: ffff88814cb6e418 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x607/0x1000 fs/read_write.c:1253
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.7.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
<TASK>
__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
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5071 Comm: kworker/1:1 Not tainted 6.7.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:186
Code: 01 0f 84 47 ff ff ff 48 ff c8 48 39 d8 0f 84 3b ff ff ff 48 89 df 48 c7 c6 fa 88 12 8d e8 83 0a e7 ff 90 0f 0b 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37
RSP: 0018:ffffc900043df8d8 EFLAGS: 00000046
RAX: 000000000000001b RBX: 00000000000006f1 RCX: ffffffff816d951a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90dd7438
RBP: 0000000000000008 R08: ffffffff90dd743f R09: 1ffffffff21bae87
R10: dffffc0000000000 R11: fffffbfff21bae88 R12: 0000000000000001
R13: dffffc0000000000 R14: 0000000000000100 R15: ffff888059c328d0
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020006000 CR3: 000000000d731000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:228 [inline]
mark_lock+0x9a/0x350 kernel/locking/lockdep.c:4656
mark_usage kernel/locking/lockdep.c:4599 [inline]
__lock_acquire+0xc09/0x1fd0 kernel/locking/lockdep.c:5091
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
wg_ratelimiter_gc_entries+0x60/0x470 drivers/net/wireguard/ratelimiter.c:63
process_one_work kernel/workqueue.c:2627 [inline]
process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2700
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2781
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
</TASK>