INFO: task kworker/u4:3:46 blocked for more than 143 seconds.
Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:3 state:D stack:23840 pid:46 ppid:2 flags:0x00004000
Workqueue: btrfs-endio-write btrfs_work_helper
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x56e/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x120/0x1c0 fs/btrfs/extent-io-tree.c:1742
btrfs_finish_ordered_io+0x9c3/0x2280 fs/btrfs/inode.c:3348
btrfs_work_helper+0x210/0xbd0 fs/btrfs/async-thread.c:280
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2407
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2554
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor527:5026 blocked for more than 143 seconds.
Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor527 state:D stack:24104 pid:5026 ppid:5010 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
inode_lock include/linux/fs.h:775 [inline]
btrfs_inode_lock+0x7e/0xf0 fs/btrfs/inode.c:377
btrfs_sync_file+0x455/0x12d0 fs/btrfs/file.c:1808
vfs_fsync_range+0x13e/0x230 fs/sync.c:188
generic_write_sync include/linux/fs.h:2469 [inline]
btrfs_do_write_iter+0x520/0x1210 fs/btrfs/file.c:1680
call_write_iter include/linux/fs.h:1868 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x945/0xd50 fs/read_write.c:584
ksys_write+0x12b/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe973fbe9f9
RSP: 002b:00007fe973f6a2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe9740487a0 RCX: 00007fe973fbe9f9
RDX: 0000000000000128 RSI: 0000000020004400 RDI: 0000000000000006
RBP: 00007fe9740151b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 61635f65646f6e69
R13: 65646f7475616f6e R14: 7261637369646f6e R15: 00007fe9740487a8
INFO: task syz-executor527:5047 blocked for more than 144 seconds.
Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor527 state:D stack:26416 pid:5047 ppid:5010 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x56e/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x120/0x1c0 fs/btrfs/extent-io-tree.c:1742
btrfs_page_mkwrite+0x652/0x11a0 fs/btrfs/inode.c:8336
do_page_mkwrite+0x1a1/0x690 mm/memory.c:2934
wp_page_shared mm/memory.c:3283 [inline]
do_wp_page+0x356/0x34e0 mm/memory.c:3365
handle_pte_fault mm/memory.c:4967 [inline]
__handle_mm_fault+0x1635/0x4170 mm/memory.c:5092
handle_mm_fault+0x2af/0x9f0 mm/memory.c:5246
do_user_addr_fault+0x51a/0x1210 arch/x86/mm/fault.c:1440
handle_page_fault arch/x86/mm/fault.c:1534 [inline]
exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1590
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0xb0 arch/x86/lib/copy_user_64.S:56
Code: 46 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 66 2e 0f 1f 84 00 00 00 00 00 66 90 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:ffffc90003dbf728 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000000000038 RCX: 0000000000000038
RDX: fffff520007b7efb RSI: ffffc90003dbf7a0 RDI: 0000000020000120
RBP: 0000000020000120 R08: 0000000000000000 R09: fffff520007b7efa
R10: ffffc90003dbf7d7 R11: 1ffffffff218f735 R12: ffffc90003dbf7a0
R13: 0000000020000158 R14: 0000000000000000 R15: ffffc90003dbf7a0
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 lib/usercopy.c:41 [inline]
_copy_to_user+0xab/0xc0 lib/usercopy.c:34
copy_to_user include/linux/uaccess.h:191 [inline]
fiemap_fill_next_extent+0x217/0x370 fs/ioctl.c:144
emit_fiemap_extent+0x18e/0x380 fs/btrfs/extent_io.c:2616
fiemap_process_hole+0x516/0x610 fs/btrfs/extent_io.c:2874
extent_fiemap+0x123b/0x1950 fs/btrfs/extent_io.c:3089
btrfs_fiemap+0xe9/0x170 fs/btrfs/inode.c:8008
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x466/0x1670 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x10c/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe973fbe9f9
RSP: 002b:00007fe96cb492f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe9740487b0 RCX: 00007fe973fbe9f9
RDX: 0000000020000100 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007fe9740151b0 R08: 00007fe96cb49700 R09: 0000000000000000
R10: 00007fe96cb49700 R11: 0000000000000246 R12: 61635f65646f6e69
R13: 65646f7475616f6e R14: 7261637369646f6e R15: 00007fe9740487b8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c798530 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c798230 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c799140 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390 kernel/locking/lockdep.c:6559
3 locks held by kworker/u4:3/46:
#0: ffff888079499138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888079499138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888079499138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
#0: ffff888079499138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline]
#0: ffff888079499138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
#0: ffff888079499138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2378
#1: ffffc90000b77db0 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2382
#2: ffff88807df6e490 (btrfs_ordered_extent){.+.+}-{0:0}, at: btrfs_finish_ordered_io+0x249/0x2280 fs/btrfs/inode.c:3301
2 locks held by getty/4765:
#0: ffff88814aaca098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
3 locks held by syz-executor527/5026:
#0: ffff88802c1274e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe7/0x100 fs/file.c:1047
#1: ffff88807c1ac460 (sb_writers#9){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#2: ffff888075708ee0 (&sb->s_type->i_mutex_key#15){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#2: ffff888075708ee0 (&sb->s_type->i_mutex_key#15){++++}-{3:3}, at: btrfs_inode_lock+0x7e/0xf0 fs/btrfs/inode.c:377
4 locks held by syz-executor527/5047:
#0: ffff888075708ee0 (&sb->s_type->i_mutex_key#15){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
#0: ffff888075708ee0 (&sb->s_type->i_mutex_key#15){++++}-{3:3}, at: btrfs_inode_lock+0xd8/0xf0 fs/btrfs/inode.c:369
#1: ffff88807de12568 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:161 [inline]
#1: ffff88807de12568 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0x448/0x1210 arch/x86/mm/fault.c:1381
#2: ffff88807c1ac558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x1a1/0x690 mm/memory.c:2934
#3: ffff888075708d68 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x6eb/0x11a0 fs/btrfs/inode.c:8325
3 locks held by syz-executor527/6264:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6262 Comm: syz-executor527 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:__mod_zone_page_state+0x8f/0x1a0 mm/vmstat.c:361
Code: 08 84 d2 0f 85 e0 00 00 00 8b 05 6c 8e bf 0c 85 c0 74 0b 65 8b 05 f1 eb 46 7e 85 c0 74 5e 48 c7 c7 60 82 57 8a e8 81 3a 55 08 <48> c7 c7 60 82 57 8a 65 8a 55 00 48 0f be d2 48 01 d3 e8 6a 3a 55
RSP: 0018:ffffc900064b7538 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 1ffffffff1cf657e
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: 00000000000433c0 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff8e7af6d7 R11: 0000000000094001 R12: 0000000000000000
R13: ffff88813fffa700 R14: 00000000000433c0 R15: ffffea0001c728c0
FS: 00007fe973f6a700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffed9f03448 CR3: 000000002ad6c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__mod_zone_freepage_state include/linux/vmstat.h:493 [inline]
__free_one_page+0x107/0xea0 mm/page_alloc.c:950
free_pcppages_bulk+0x344/0x630 mm/page_alloc.c:1409
free_unref_page_commit+0x25f/0x6e0 mm/page_alloc.c:2680
free_unref_page_list+0x23e/0xa70 mm/page_alloc.c:2801
release_pages+0xcd8/0x1380 mm/swap.c:1042
__pagevec_release+0x77/0xe0 mm/swap.c:1062
pagevec_release include/linux/pagevec.h:63 [inline]
folio_batch_release include/linux/pagevec.h:132 [inline]
shmem_undo_range+0x583/0x1240 mm/shmem.c:954
shmem_truncate_range mm/shmem.c:1064 [inline]
shmem_evict_inode+0x32f/0xb60 mm/shmem.c:1179
evict+0x2ed/0x6b0 fs/inode.c:665
iput_final fs/inode.c:1747 [inline]
iput fs/inode.c:1773 [inline]
iput+0x4a7/0x7a0 fs/inode.c:1759
dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:401
__dentry_kill+0x3c0/0x640 fs/dcache.c:607
dentry_kill fs/dcache.c:733 [inline]
dput+0x865/0xe10 fs/dcache.c:913
__fput+0x3cc/0xa90 fs/file_table.c:329
task_work_run+0x16f/0x270 kernel/task_work.c:179
ptrace_notify+0x118/0x140 kernel/signal.c:2369
ptrace_report_syscall include/linux/ptrace.h:411 [inline]
ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]
syscall_exit_work kernel/entry/common.c:252 [inline]
syscall_exit_to_user_mode_prepare+0x129/0x220 kernel/entry/common.c:279
__syscall_exit_to_user_mode_work kernel/entry/common.c:284 [inline]
syscall_exit_to_user_mode+0xd/0x50 kernel/entry/common.c:297
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe973fbe8b7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 b4 5d 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe973f6a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000011 RCX: 00007fe973fbe8b7
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00007fe973f6a1c0 R09: 00000000000050e9
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe973f6a6b8
R13: 00007fe973f6a180 R14: 00007fe973f6a1c0 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.869 msecs