INFO: task kworker/u4:7:1037 blocked for more than 143 seconds.
Not tainted 6.6.0-rc4-syzkaller-00037-g3006adf3be79 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:7 state:D stack:20120 pid:1037 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-btrfs-118)
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
io_schedule+0x8c/0x100 kernel/sched/core.c:9026
folio_wait_bit_common+0x881/0x12a0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:1042 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2078 [inline]
extent_writepages+0xc6e/0x2e50 fs/btrfs/extent_io.c:2226
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
__writeback_single_inode+0x155/0xfa0 fs/fs-writeback.c:1608
writeback_sb_inodes+0x8e3/0x1210 fs/fs-writeback.c:1899
__writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:1970
wb_writeback+0x461/0xc60 fs/fs-writeback.c:2077
wb_check_background_flush fs/fs-writeback.c:2147 [inline]
wb_do_writeback fs/fs-writeback.c:2235 [inline]
wb_workfn+0xc6f/0xff0 fs/fs-writeback.c:2262
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
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:304
INFO: task syz-executor.1:10825 blocked for more than 144 seconds.
Not tainted 6.6.0-rc4-syzkaller-00037-g3006adf3be79 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23336 pid:10825 ppid:5082 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
io_schedule+0x8c/0x100 kernel/sched/core.c:9026
folio_wait_bit_common+0x881/0x12a0 mm/filemap.c:1301
btrfs_page_mkwrite+0x4a4/0xd10 fs/btrfs/inode.c:8133
do_page_mkwrite+0x197/0x470 mm/memory.c:2931
wp_page_shared mm/memory.c:3291 [inline]
do_wp_page+0xf87/0x4190 mm/memory.c:3376
handle_pte_fault mm/memory.c:4994 [inline]
__handle_mm_fault mm/memory.c:5119 [inline]
handle_mm_fault+0x1b45/0x62b0 mm/memory.c:5284
do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x2ac/0x860 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:ffffc9000378fd50 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000020000008 RCX: 0000000000000008
RDX: 0000000000000000 RSI: ffffc9000378fde0 RDI: 0000000020000000
RBP: ffffc9000378fee0 R08: ffffc9000378fde7 R09: 1ffff920006f1fbc
R10: dffffc0000000000 R11: fffff520006f1fbd R12: 0000000000000008
R13: ffff888078368e5b R14: 0000000020000000 R15: ffffc9000378fde0
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]
fcntl_rw_hint fs/fcntl.c:297 [inline]
do_fcntl+0x924/0x1680 fs/fcntl.c:420
__do_sys_fcntl fs/fcntl.c:456 [inline]
__se_sys_fcntl+0xd2/0x1b0 fs/fcntl.c:441
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: 0033:0x7f2d56e7cae9
RSP: 002b:00007f2d57c300c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 00007f2d56f9bf80 RCX: 00007f2d56e7cae9
RDX: 0000000020000000 RSI: 000000000000040b RDI: 0000000000000004
RBP: 00007f2d56ec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2d56f9bf80 R15: 00007ffcc584e608
INFO: task syz-executor.1:10850 blocked for more than 145 seconds.
Not tainted 6.6.0-rc4-syzkaller-00037-g3006adf3be79 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:22296 pid:10850 ppid:5082 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
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:8143
do_page_mkwrite+0x197/0x470 mm/memory.c:2931
wp_page_shared mm/memory.c:3291 [inline]
do_wp_page+0xf87/0x4190 mm/memory.c:3376
handle_pte_fault mm/memory.c:4994 [inline]
__handle_mm_fault mm/memory.c:5119 [inline]
handle_mm_fault+0x1b45/0x62b0 mm/memory.c:5284
do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
handle_page_fault arch/x86/mm/fault.c:1505 [inline]
exc_page_fault+0x2ac/0x860 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:ffffc9000393f550 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000298 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc9000393f600 RDI: 0000000020000260
RBP: ffffc9000393f6b0 R08: ffffc9000393f637 R09: 1ffff92000727ec6
R10: dffffc0000000000 R11: fffff52000727ec7 R12: 0000000000000038
R13: ffffc9000393f600 R14: 0000000020000260 R15: ffffc9000393f600
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:2506 [inline]
extent_fiemap+0x1b9c/0x1fe0 fs/btrfs/extent_io.c:3033
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7815
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:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2d56e7cae9
RSP: 002b:00007f2d57bee0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2d56f9c120 RCX: 00007f2d56e7cae9
RDX: 0000000020000240 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007f2d56ec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2d56f9c120 R15: 00007ffcc584e608
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c420 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
3 locks held by kworker/u4:7/1037:
#0: ffff888018a60938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888018a60938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90004bcfd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90004bcfd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#2: ffff888033da20e0 (&type->s_umount_key#58){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:607
2 locks held by getty/4791:
#0: ffff88802638d0a0 (&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+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
1 lock held by syz-executor.4/5062:
#0: ffffffff8d331db8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d331db8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/1:4/5123:
#0: ffff888012872938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888012872938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc9000462fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc9000462fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
3 locks held by syz-executor.1/10825:
#0: ffff88807e314da0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#0: ffff88807e314da0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5311 [inline]
#0: ffff88807e314da0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5371
#1: ffff888033da2508 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2931
#2: ffff888078368d68 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8132
4 locks held by syz-executor.1/10850:
#0: ffff888078368ee0 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888078368ee0 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:369
#1: ffff88807e314da0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff88807e314da0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5311 [inline]
#1: ffff88807e314da0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5371
#2: ffff888033da2508 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2931
#3: ffff888078368d68 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8132
2 locks held by syz-executor.3/12894:
1 lock held by syz-executor.1/12908:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc4-syzkaller-00037-g3006adf3be79 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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+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+0xfa9/0xff0 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:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10885 Comm: udevd Not tainted 6.6.0-rc4-syzkaller-00037-g3006adf3be79 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:tomoyo_write_log2+0x9/0x8e0 security/tomoyo/audit.c:368
Code: ff ff e8 9a 1b 91 fd 48 c7 c7 00 34 92 8d 48 89 de e8 8b d3 7a 00 e9 e0 e2 ff ff e8 a1 7b d0 06 90 66 0f 1f 00 55 41 57 41 56 <41> 55 41 54 53 48 83 ec 30 48 89 4c 24 20 48 89 54 24 18 89 74 24
RSP: 0018:ffffc9000398f860 EFLAGS: 00000202
RAX: 0000000000000019 RBX: ffffc9000398fa38 RCX: ffffc9000398f900
RDX: ffffffff8b541040 RSI: 0000000000000019 RDI: ffffc9000398fae0
RBP: ffffc9000398fa28 R08: ffffffff8ac78041 R09: ffffffff8ac7650f
R10: 0000000000000012 R11: ffff888029143b80 R12: ffffc9000398f8b0
R13: ffffc9000398fae0 R14: 0000003000000010 R15: dffffc0000000000
FS: 00007f5401176c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4c980c56be CR3: 000000001c280000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tomoyo_supervisor+0x159/0x11f0 security/tomoyo/common.c:2065
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission+0x243/0x360 security/tomoyo/file.c:587
tomoyo_path_perm+0x480/0x730 security/tomoyo/file.c:838
security_inode_getattr+0xd3/0x120 security/security.c:2153
vfs_getattr+0x2a/0x3a0 fs/stat.c:169
vfs_fstat fs/stat.c:194 [inline]
vfs_fstatat+0xd6/0x190 fs/stat.c:291
__do_sys_newfstatat fs/stat.c:459 [inline]
__se_sys_newfstatat fs/stat.c:453 [inline]
__x64_sys_newfstatat+0x117/0x190 fs/stat.c:453
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: 0033:0x7f5400d165f4
Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8
RSP: 002b:00007ffea2db89e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5400d165f4
RDX: 00007ffea2db8a28 RSI: 00007f5400db3130 RDI: 0000000000000009
RBP: 000056307f820fe0 R08: 0000000000000000 R09: fafcb43ffbd3d6ce
R10: 0000000000001000 R11: 0000000000000206 R12: 0000000000000001
R13: 000056307f815b80 R14: 0000000000000000 R15: 0000000000000001