INFO: task kworker/u4:9:5639 blocked for more than 143 seconds.
Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:9 state:D stack:17464 pid:5639 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-btrfs-122)
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
io_schedule+0x8c/0x100 kernel/sched/core.c:8979
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:955 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2457 [inline]
extent_writepages+0xae4/0x1990 fs/btrfs/extent_io.c:2599
do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
__writeback_single_inode+0x155/0xfa0 fs/fs-writeback.c:1603
writeback_sb_inodes+0x8e3/0x11d0 fs/fs-writeback.c:1894
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1965
wb_writeback+0x46c/0xc70 fs/fs-writeback.c:2070
wb_check_start_all fs/fs-writeback.c:2192 [inline]
wb_do_writeback fs/fs-writeback.c:2218 [inline]
wb_workfn+0x98f/0xff0 fs/fs-writeback.c:2251
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.5:12588 blocked for more than 143 seconds.
Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23168 pid:12588 ppid:5028 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
io_schedule+0x8c/0x100 kernel/sched/core.c:8979
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
btrfs_page_mkwrite+0x42f/0xc90 fs/btrfs/inode.c:8117
do_page_mkwrite+0x1a4/0x600 mm/memory.c:2931
wp_page_shared mm/memory.c:3280 [inline]
do_wp_page+0x501/0x3690 mm/memory.c:3362
handle_pte_fault mm/memory.c:4964 [inline]
__handle_mm_fault mm/memory.c:5089 [inline]
handle_mm_fault+0x2371/0x5860 mm/memory.c:5243
do_user_addr_fault arch/x86/mm/fault.c:1440 [inline]
handle_page_fault arch/x86/mm/fault.c:1534 [inline]
exc_page_fault+0x7d2/0x910 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 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:ffffc900058cf328 EFLAGS: 00050206
RAX: 0000000000001000 RBX: 00007fffffffefc8 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc900058cf3e0 RDI: 0000000020001318
RBP: ffffc900058cf498 R08: dffffc0000000000 R09: fffff52000b19e83
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000038
R13: 0000000020001318 R14: 0000000020001318 R15: ffffc900058cf3e0
copy_user_generic arch/x86/include/asm/uaccess_64.h:31 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:52 [inline]
_copy_to_user+0x10c/0x150 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+0x259/0x410 fs/btrfs/extent_io.c:2846
fiemap_process_hole+0x374/0xaf0 fs/btrfs/extent_io.c:3057
extent_fiemap+0xe7d/0x1fc0
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7799
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x19ba/0x2b10 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x81/0x160 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: 0033:0x7f233568c169
RSP: 002b:00007f2336397168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f23357abf80 RCX: 00007f233568c169
RDX: 00000000200012c0 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f23356e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffea3f120df R14: 00007f2336397300 R15: 0000000000022000
INFO: task syz-executor.5:12631 blocked for more than 144 seconds.
Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24808 pid:12631 ppid:5028 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742
find_lock_delalloc_range+0x4c3/0x990 fs/btrfs/extent_io.c:479
writepage_delalloc+0x1f1/0x590 fs/btrfs/extent_io.c:1323
__extent_writepage+0x899/0x1740 fs/btrfs/extent_io.c:1609
extent_write_cache_pages fs/btrfs/extent_io.c:2477 [inline]
extent_writepages+0xca7/0x1990 fs/btrfs/extent_io.c:2599
do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390
__filemap_fdatawrite_range mm/filemap.c:423 [inline]
filemap_fdatawrite_range+0x16e/0x1e0 mm/filemap.c:441
btrfs_fdatawrite_range fs/btrfs/file.c:3862 [inline]
start_ordered_ops+0xea/0x220 fs/btrfs/file.c:1737
btrfs_sync_file+0x410/0x10e0 fs/btrfs/file.c:1813
generic_write_sync include/linux/fs.h:2469 [inline]
btrfs_do_write_iter+0xccc/0x1270 fs/btrfs/file.c:1684
do_iter_write+0x7b1/0xcb0 fs/read_write.c:860
vfs_writev fs/read_write.c:933 [inline]
do_writev+0x27f/0x470 fs/read_write.c:976
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: 0033:0x7f233568c169
RSP: 002b:00007f2336376168 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f23357ac050 RCX: 00007f233568c169
RDX: 0000000000000001 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f23356e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffea3f120df R14: 00007f2336376300 R15: 0000000000022000
INFO: task syz-executor.4:12660 blocked for more than 144 seconds.
Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24584 pid:12660 ppid:5034 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:192
sync_inodes_sb+0x297/0xab0 fs/fs-writeback.c:2730
iterate_supers+0x12b/0x1e0 fs/super.c:745
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:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8f3a48c169
RSP: 002b:00007f8f3b166168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f8f3a5abf80 RCX: 00007f8f3a48c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8f3a4e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc4c78f2af R14: 00007f8f3b166300 R15: 0000000000022000
INFO: task syz-executor.4:12693 blocked for more than 144 seconds.
Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28680 pid:12693 ppid:5034 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728
iterate_supers+0x12b/0x1e0 fs/super.c:745
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:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8f3a48c169
RSP: 002b:00007f8f3b124168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f8f3a5ac120 RCX: 00007f8f3a48c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8f3a4e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc4c78f2af R14: 00007f8f3b124300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf277b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27b70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf275e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:6/2819:
2 locks held by getty/4743:
#0: ffff888028f8f098 (&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+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
3 locks held by kworker/u4:9/5639:
#0: ffff888144e7d938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc9000bb6fd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff888077fcc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
5 locks held by kworker/u4:10/6548:
4 locks held by syz-executor.5/12588:
#0: ffff88803a2175b8 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
#0: ffff88803a2175b8 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:170
#1: ffff888015f4ed68 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:161 [inline]
#1: ffff888015f4ed68 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1381 [inline]
#1: ffff888015f4ed68 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1534 [inline]
#1: ffff888015f4ed68 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x1b9/0x910 arch/x86/mm/fault.c:1590
#2: ffff888077fcc558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x1a4/0x600 mm/memory.c:2931
#3: ffff88803a217440 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x427/0xc90 fs/btrfs/inode.c:8116
2 locks held by syz-executor.5/12631:
#0: ffff88802c2a19e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x254/0x2f0 fs/file.c:1047
#1: ffff888077fcc460 (sb_writers#16){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:932 [inline]
#1: ffff888077fcc460 (sb_writers#16){.+.+}-{0:0}, at: do_writev+0x26b/0x470 fs/read_write.c:976
2 locks held by syz-executor.4/12660:
#0: ffff888077fcc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728
2 locks held by syz-executor.4/12693:
#0: ffff888077fcc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728
2 locks held by syz-executor.4/12831:
#0: ffff888077fcc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728
2 locks held by syz-executor.4/12849:
#0: ffff888077fcc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728
2 locks held by syz-executor.4/12939:
#0: ffff888077fcc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728
2 locks held by syz-executor.4/12940:
#0: ffff888077fcc0e0 (&type->s_umount_key#53){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:743
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff888077fce7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x278/0xab0 fs/fs-writeback.c:2728
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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:148 [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: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: 8540 Comm: kworker/u4:12 Not tainted 6.3.0-syzkaller-12049-g58390c8ce1bd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:task_wait_context kernel/locking/lockdep.c:4678 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4767 [inline]
RIP: 0010:__lock_acquire+0x6f4/0x2000 kernel/locking/lockdep.c:5024
Code: 00 00 fc ff df eb a8 48 c7 c7 a0 50 df 8c 48 89 de e8 40 a5 01 03 48 8b 74 24 08 48 ba 00 00 00 00 00 fc ff df e9 62 ff ff ff <65> 8b 05 b9 35 97 7e 41 b7 02 85 c0 75 24 48 8b 44 24 58 0f b6 04
RSP: 0018:ffffc9000346f938 EFLAGS: 00000096
RAX: 0000000000000000 RBX: 00000000000606d2 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffff8880359ec648 RDI: 000000000000000a
RBP: 00000000ffffffff R08: dffffc0000000000 R09: fffffbfff206504d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880359ebb80
R13: 0000000000000000 R14: 1ffff11006b3d8d7 R15: ffff8880359ec6b8
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005602fddf6040 CR3: 000000002d2ae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5691
rcu_lock_acquire+0x2e/0x40 include/linux/rcupdate.h:327
rcu_read_lock include/linux/rcupdate.h:773 [inline]
batadv_nc_process_nc_paths+0xb8/0x350 net/batman-adv/network-coding.c:687
batadv_nc_worker+0x3d8/0x5c0 net/batman-adv/network-coding.c:728
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308