INFO: task syz-executor.4:20075 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller-04629-g3e7aeb78ab01 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25488 pid:20075 tgid:20075 ppid:5092 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
io_schedule+0x8c/0x100 kernel/sched/core.c:9023
folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1274
btrfs_page_mkwrite+0x60d/0x10c0 fs/btrfs/inode.c:8166
do_page_mkwrite+0x197/0x470 mm/memory.c:2966
wp_page_shared mm/memory.c:3353 [inline]
do_wp_page+0x20e3/0x4c80 mm/memory.c:3493
handle_pte_fault mm/memory.c:5160 [inline]
__handle_mm_fault+0x26a3/0x72b0 mm/memory.c:5285
handle_mm_fault+0x27e/0x770 mm/memory.c:5450
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1507 [inline]
exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fe64445ddab
RSP: 002b:00007fffd4101bc8 EFLAGS: 00010202
RAX: 0000000020000000 RBX: 00007fffd4101cd8 RCX: 0000000000737562
RDX: 0000000000000006 RSI: 0000000075622f2e RDI: 0000000020000000
RBP: 0000000000000032 R08: 00007fe644400000 R09: 00007fffd41310b0
R10: 00007fffd4131080 R11: 0000000000014122 R12: 00007fe6440066d8
R13: fffffffffffffffe R14: 00007fe644000000 R15: 00007fe6440066e0
INFO: task syz-executor.4:20076 blocked for more than 144 seconds.
Not tainted 6.7.0-syzkaller-04629-g3e7aeb78ab01 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24200 pid:20076 tgid:20075 ppid:5092 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
wait_extent_bit fs/btrfs/extent-io-tree.c:822 [inline]
lock_extent+0x69d/0x850 fs/btrfs/extent-io-tree.c:1868
btrfs_page_mkwrite+0x743/0x10c0 fs/btrfs/inode.c:8176
do_page_mkwrite+0x197/0x470 mm/memory.c:2966
wp_page_shared mm/memory.c:3353 [inline]
do_wp_page+0x20e3/0x4c80 mm/memory.c:3493
handle_pte_fault mm/memory.c:5160 [inline]
__handle_mm_fault+0x26a3/0x72b0 mm/memory.c:5285
handle_mm_fault+0x27e/0x770 mm/memory.c:5450
do_user_addr_fault arch/x86/mm/fault.c:1415 [inline]
handle_page_fault arch/x86/mm/fault.c:1507 [inline]
exc_page_fault+0x2ad/0x870 arch/x86/mm/fault.c:1563
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:ffffc9000ab7f530 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 00000000200004d8 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc9000ab7f5e0 RDI: 00000000200004a0
RBP: ffffc9000ab7f690 R08: ffffc9000ab7f617 R09: 1ffff9200156fec2
R10: dffffc0000000000 R11: fffff5200156fec3 R12: 0000000000000038
R13: ffffc9000ab7f5e0 R14: 00000000200004a0 R15: ffffc9000ab7f5e0
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:2555 [inline]
extent_fiemap+0x1b9c/0x1fe0 fs/btrfs/extent_io.c:3082
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7844
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:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe64447cd29
RSP: 002b:00007fe6452cb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe6445abf80 RCX: 00007fe64447cd29
RDX: 0000000020000480 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007fe6444c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe6445abf80 R15: 00007fffd4101ae8
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-04629-g3e7aeb78ab01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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+0xfaf/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:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5040 Comm: syz-fuzzer Not tainted 6.7.0-syzkaller-04629-g3e7aeb78ab01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0033:0x75d2b1
Code: 24 20 48 8d 1d f0 fd 32 00 48 39 da 75 32 48 8b 16 48 8b 4e 08 0f 1f 40 00 48 39 c1 76 1d 48 c1 e0 04 48 8b 0c 02 48 8b 49 58 <48> 8b 44 02 08 ff d1 48 8b 6c 24 28 48 83 c4 30 c3 e8 79 f8 d0 ff
RSP: 002b:000000c008907898 EFLAGS: 00000202
RAX: 0000000000023fb0 RBX: 0000000000a8d080 RCX: 0000000000778060
RDX: 000000c000b0e000 RSI: 000000c00009e018 RDI: 000000c008907ab8
RBP: 000000c0089078c0 R08: 000000c008907ac0 R09: 00000000003fffa0
R10: 000000000074d860 R11: 0000000000000000 R12: 000000c008907950
R13: ffffffffffffffff R14: 000000c000ff0b60 R15: 000000c00005a400
FS: 000000c00005a490 GS: 0000000000000000