INFO: task syz-executor115:7547 blocked for more than 143 seconds.
Not tainted 6.3.0-syzkaller-13466-gfc4354c6e5c2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor115 state:D stack:26416 pid:7547 ppid:5051 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0xc9a/0x5880 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:8127
do_page_mkwrite+0x1a1/0x690 mm/memory.c:2931
wp_page_shared mm/memory.c:3280 [inline]
do_wp_page+0x356/0x33c0 mm/memory.c:3362
handle_pte_fault mm/memory.c:4964 [inline]
__handle_mm_fault+0x1635/0x41c0 mm/memory.c:5089
handle_mm_fault+0x2af/0x9f0 mm/memory.c:5243
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:ffffc9000e8bf728 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000000000038 RCX: 0000000000000038
RDX: fffff52001d17efb RSI: ffffc9000e8bf7a0 RDI: 0000000020000120
RBP: 0000000020000120 R08: 0000000000000000 R09: ffffc9000e8bf7d7
R10: fffff52001d17efa R11: 0000000000094001 R12: ffffc9000e8bf7a0
R13: 0000000020000158 R14: 0000000000000000 R15: ffffc9000e8bf7a0
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:2846
fiemap_process_hole+0x516/0x610 fs/btrfs/extent_io.c:3104
extent_fiemap+0x123b/0x1950 fs/btrfs/extent_io.c:3319
btrfs_fiemap+0xe9/0x170 fs/btrfs/inode.c:7799
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: 0033:0x7f960a8c0a19
RSP: 002b:00007f960344b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f960a94a7b0 RCX: 00007f960a8c0a19
RDX: 0000000020000100 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f960a9171d0 R08: 00007f960344b700 R09: 0000000000000000
R10: 00007f960344b700 R11: 0000000000000246 R12: 61635f65646f6e69
R13: 65646f7475616f6e R14: 7261637369646f6e R15: 00007f960a94a7b8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c798430 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c798130 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8c799040 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6545
2 locks held by getty/4753:
#0: ffff88802cb8a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
5 locks held by kworker/u4:4/5161:
#0: ffff8880b993c5d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:558
#1: ffff8880b9928848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x216/0x950 kernel/sched/psi.c:984
#2: ffff8880b99296d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:999
#3: ffffffff91ff2748 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x134/0x3f0 lib/debugobjects.c:690
#4: ffffffff8c65be88 (text_mutex){+.+.}-{3:3}, at: arch_jump_label_transform_apply+0x12/0x30 arch/x86/kernel/jump_label.c:145
4 locks held by syz-executor115/7547:
#0: ffff888073b021a0 (&sb->s_type->i_mutex_key#15){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
#0: ffff888073b021a0 (&sb->s_type->i_mutex_key#15){++++}-{3:3}, at: btrfs_inode_lock+0xd8/0xf0 fs/btrfs/inode.c:170
#1: ffff8880192de468 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:161 [inline]
#1: ffff8880192de468 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0x448/0x1210 arch/x86/mm/fault.c:1381
#2: ffff88801b742558 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x1a1/0x690 mm/memory.c:2931
#3: ffff888073b02028 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x6eb/0x11a0 fs/btrfs/inode.c:8116
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-13466-gfc4354c6e5c2 #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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5060 Comm: udevd Not tainted 6.3.0-syzkaller-13466-gfc4354c6e5c2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 16 a7 8e 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be a8 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1e fa 65 8b 05 dd 76 7f 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc90003e3fa10 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81f521e2
RDX: ffff888027ff5940 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90003e3fb20 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000094001 R12: 1ffff920007c7f66
R13: ffff88802a01f910 R14: dffffc0000000000 R15: 0000000000000fff
FS: 00007f4952154c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f960a86d000 CR3: 000000002b823000 CR4: 0000000000350ee0
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
rcu_read_lock include/linux/rcupdate.h:773 [inline]
prepend_path+0xd5/0xf20 fs/d_path.c:167
d_absolute_path+0xf3/0x1a0 fs/d_path.c:233
tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
tomoyo_realpath_from_path+0x269/0x600 security/tomoyo/realpath.c:271
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x21a/0x570 security/tomoyo/file.c:723
security_file_ioctl+0x54/0xb0 security/security.c:2608
__do_sys_ioctl fs/ioctl.c:864 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0xb7/0x210 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: 0033:0x7f4951d1ad49
Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8
RSP: 002b:00007ffd15078328 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4951d1ad49
RDX: 00007ffd15078360 RSI: 0000000080280215 RDI: 0000000000000009
RBP: 0000563eb386c3e0 R08: 0000000000000000 R09: 00007f4951df1c10
R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000009
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001