INFO: task kworker/u4:8:10397 blocked for more than 143 seconds.
Not tainted 6.5.0-rc2-syzkaller-00221-gf7e3a1bafdea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:8 state:D stack:20712 pid:10397 ppid:2 flags:0x00004000
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
io_schedule+0x8c/0x100 kernel/sched/core.c:9028
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1304
btrfs_page_start_writer_lock+0x71/0x2f0 fs/btrfs/subpage.c:344
process_one_page fs/btrfs/extent_io.c:233 [inline]
__process_pages_contig+0x4ab/0xd50 fs/btrfs/extent_io.c:285
lock_delalloc_pages+0x16a/0x250 fs/btrfs/extent_io.c:346
find_lock_delalloc_range+0x44d/0x980 fs/btrfs/extent_io.c:423
writepage_delalloc+0x1bd/0x490 fs/btrfs/extent_io.c:1235
__extent_writepage fs/btrfs/extent_io.c:1492 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2160 [inline]
extent_writepages+0x14bd/0x2d00 fs/btrfs/extent_io.c:2286
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:393
start_delalloc_inodes+0x7e1/0xcb0 fs/btrfs/inode.c:9409
btrfs_start_delalloc_roots+0x745/0xab0 fs/btrfs/inode.c:9488
shrink_delalloc fs/btrfs/space-info.c:623 [inline]
flush_space+0x6a0/0xe70 fs/btrfs/space-info.c:731
btrfs_async_reclaim_metadata_space+0x29f/0x350 fs/btrfs/space-info.c:1078
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: task syz-executor.3:29715 blocked for more than 145 seconds.
Not tainted 6.5.0-rc2-syzkaller-00221-gf7e3a1bafdea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24848 pid:29715 ppid:5057 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
io_schedule+0x8c/0x100 kernel/sched/core.c:9028
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1304
folio_lock include/linux/pagemap.h:959 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2140 [inline]
extent_writepages+0xcea/0x2d00 fs/btrfs/extent_io.c:2286
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:393
__filemap_fdatawrite_range mm/filemap.c:426 [inline]
__filemap_fdatawrite mm/filemap.c:432 [inline]
filemap_flush+0x11e/0x170 mm/filemap.c:459
btrfs_release_file+0x117/0x130 fs/btrfs/file.c:1709
__fput+0x3f8/0x950 fs/file_table.c:384
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7eff7047ba1a
RSP: 002b:00007ffff4452190 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000009 RCX: 00007eff7047ba1a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007eff7059d980 R08: 0000001b2ee20000 R09: 0000000000000025
R10: 000000008ac6685f R11: 0000000000000293 R12: 000000000016729f
R13: ffffffffffffffff R14: 00007eff70000000 R15: 0000000000166365
INFO: task syz-executor.3:29789 blocked for more than 146 seconds.
Not tainted 6.5.0-rc2-syzkaller-00221-gf7e3a1bafdea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24600 pid:29789 ppid:5057 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:771 [inline]
btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:377
btrfs_buffered_write+0x230/0x1380 fs/btrfs/file.c:1199
btrfs_do_write_iter+0x2b4/0x1020 fs/btrfs/file.c:1670
do_iter_write+0x84f/0xde0 fs/read_write.c:860
iter_file_splice_write+0x86d/0x1010 fs/splice.c:739
do_splice_from fs/splice.c:934 [inline]
direct_splice_actor+0xea/0x1c0 fs/splice.c:1143
splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1089
do_splice_direct+0x2ac/0x3f0 fs/splice.c:1195
do_sendfile+0x623/0x1070 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:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7eff7047cb29
RSP: 002b:00007eff7116f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007eff7059c050 RCX: 00007eff7047cb29
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000007
RBP: 00007eff704c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007eff7059c050 R15: 00007ffff44520c8
INFO: task syz-executor.3:29790 blocked for more than 148 seconds.
Not tainted 6.5.0-rc2-syzkaller-00221-gf7e3a1bafdea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23512 pid:29790 ppid:5057 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
wait_on_state fs/btrfs/extent-io-tree.c:719 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:763
lock_extent+0x1c0/0x270 fs/btrfs/extent-io-tree.c:1755
btrfs_page_mkwrite+0x5bd/0xd10 fs/btrfs/inode.c:8271
do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
wp_page_shared mm/memory.c:3294 [inline]
do_wp_page+0x559/0x3a70 mm/memory.c:3376
handle_pte_fault mm/memory.c:4955 [inline]
__handle_mm_fault mm/memory.c:5079 [inline]
handle_mm_fault+0x1c58/0x5410 mm/memory.c:5233
do_user_addr_fault arch/x86/mm/fault.c:1392 [inline]
handle_page_fault arch/x86/mm/fault.c:1486 [inline]
exc_page_fault+0x266/0x7c0 arch/x86/mm/fault.c:1542
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: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:ffffc9000b6bf4d0 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020001318 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc9000b6bf580 RDI: 00000000200012e0
RBP: ffffc9000b6bf638 R08: ffffc9000b6bf5b7 R09: 1ffff920016d7eb6
R10: dffffc0000000000 R11: fffff520016d7eb7 R12: 0000000000000038
R13: ffffc9000b6bf580 R14: 00000000200012e0 R15: ffffc9000b6bf580
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:144
emit_fiemap_extent+0x256/0x410 fs/btrfs/extent_io.c:2532
extent_fiemap+0xeee/0x1fe0 fs/btrfs/extent_io.c:3022
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7943
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x19db/0x2b30 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7eff7047cb29
RSP: 002b:00007eff7114e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007eff7059c120 RCX: 00007eff7047cb29
RDX: 00000000200012c0 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007eff704c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007eff7059c120 R15: 00007ffff44520c8
Showing all locks held in the system:
2 locks held by kworker/u4:0/10:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d328af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d328eb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d328920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4770:
#0: ffff8880291a6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2187
4 locks held by kworker/u4:8/10397:
#0: ffff888012879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc9000bf1fd00 ((work_completion)(&fs_info->async_reclaim_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffff88801776ced0 (&fs_info->delalloc_root_mutex){+.+.}-{3:3}, at: btrfs_start_delalloc_roots+0x1c6/0xab0 fs/btrfs/inode.c:9469
#3: ffff88803b1c8758 (&root->delalloc_mutex){+.+.}-{3:3}, at: start_delalloc_inodes+0x1ac/0xcb0 fs/btrfs/inode.c:9374
3 locks held by kworker/u4:3/27400:
#0: ffff88801329e938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc900176ffd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffff8880368740e0 (&type->s_umount_key#62){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:413
2 locks held by syz-executor.3/29789:
#0: ffff888036874410 (sb_writers#15){.+.+}-{0:0}, at: do_sendfile+0x600/0x1070 fs/read_write.c:1253
#1: ffff88803652e2b0 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline]
#1: ffff88803652e2b0 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:377
4 locks held by syz-executor.3/29790:
#0: ffff88803652e2b0 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:781 [inline]
#0: ffff88803652e2b0 (&sb->s_type->i_mutex_key#24){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:369
#1: ffff88802221ea20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:161 [inline]
#1: ffff88802221ea20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5261 [inline]
#1: ffff88802221ea20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5323
#2: ffff888036874508 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x1a4/0x600 mm/memory.c:2942
#3: ffff88803652e138 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8260
1 lock held by btrfs-cleaner/29781:
#0: ffff88801776e018 (&fs_info->reclaim_bgs_lock){+.+.}-{3:3}, at: btrfs_delete_unused_bgs+0xf5/0x9d0 fs/btrfs/block-group.c:1449
1 lock held by udevadm/31301:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc2-syzkaller-00221-gf7e3a1bafdea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
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+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 31300 Comm: syz-executor.1 Not tainted 6.5.0-rc2-syzkaller-00221-gf7e3a1bafdea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0033:0x7ffb6c42871b
Code: cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 <45> 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01 49 89 47 10 83
RSP: 002b:00007ffb6d240520 EFLAGS: 00000202
RAX: 00000000011d0db1 RBX: 00007ffb6d2405c0 RCX: 0000000000000012
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007ffb6d240660
RBP: 0000000000000102 R08: 00007ffb62bff000 R09: 0000000000000000
R10: 0000000000000000 R11: 00007ffb6d2405d0 R12: 0000000000000001
R13: 00007ffb6c4ea340 R14: 0000000000000000 R15: 00007ffb6d240660
FS: 00007ffb6d2416c0 GS: 0000000000000000