INFO: task syz-executor.2:1476 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller-01727-gab27740f7665 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24016 pid:1476 tgid:1474 ppid:24981 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5399 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6726
__schedule_loop kernel/sched/core.c:6801 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6816
wait_extent_bit fs/btrfs/extent-io-tree.c:799 [inline]
lock_extent+0x69d/0x850 fs/btrfs/extent-io-tree.c:1843
btrfs_page_mkwrite+0x5bd/0xd10 fs/btrfs/inode.c:8158
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:ffffc90015b37530 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000318 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc90015b375e0 RDI: 00000000200002e0
RBP: ffffc90015b37690 R08: ffffc90015b37617 R09: 1ffff92002b66ec2
R10: dffffc0000000000 R11: fffff52002b66ec3 R12: 0000000000000038
R13: ffffc90015b375e0 R14: 00000000200002e0 R15: ffffc90015b375e0
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:2511 [inline]
extent_fiemap+0x1b9c/0x1fe0 fs/btrfs/extent_io.c:3038
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7830
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: 0033:0x7fd4d7c7cd29
RSP: 002b:00007fd4d8a420c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd4d7dabf80 RCX: 00007fd4d7c7cd29
RDX: 00000000200002c0 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007fd4d7cc947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd4d7dabf80 R15: 00007ffef89c91a8
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-01727-gab27740f7665 #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3151 Comm: syz-executor.3 Not tainted 6.7.0-syzkaller-01727-gab27740f7665 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:io_cqe_cache_refill+0x0/0x230 io_uring/io_uring.c:851
Code: c6 fa ff ff e8 91 8a 13 fd 90 0f 0b 90 e9 fa fe ff ff e8 83 8a 13 fd e8 be 1e 85 fc eb dd 66 2e 0f 1f 84 00 00 00 00 00 66 90 <66> 0f 1f 00 55 41 57 41 56 41 55 41 54 53 50 89 f5 49 89 fe 49 bf
RSP: 0018:ffffc90015fcfae8 EFLAGS: 00000246
RAX: 1ffff1100663bc49 RBX: ffff8880331de248 RCX: 0000000000040000
RDX: ffffc900047e1000 RSI: 0000000000000001 RDI: ffff8880331de000
RBP: ffffc90015fcfbc0 R08: ffffffff847c8a2b R09: fffff52002bf9f58
R10: dffffc0000000000 R11: fffff52002bf9f58 R12: 1ffff1100663bc48
R13: dffffc0000000000 R14: ffff8880331de240 R15: 0000000000000000
FS: 00007f5baf4806c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005603fc510040 CR3: 0000000051e69000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
io_get_cqe_overflow+0x3ed/0x590 io_uring/io_uring.h:135
__io_cqring_overflow_flush+0x1fa/0x600 io_uring/io_uring.c:718
io_cqring_do_overflow_flush io_uring/io_uring.c:739 [inline]
io_cqring_wait io_uring/io_uring.c:2651 [inline]
__do_sys_io_uring_enter io_uring/io_uring.c:3757 [inline]
__se_sys_io_uring_enter+0x1f3e/0x2b30 io_uring/io_uring.c:3647
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: 0033:0x7f5bae67cd29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5baf4800c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f5bae7abf80 RCX: 00007f5bae67cd29
RDX: 0000000000400000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f5bae6c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5bae7abf80 R15: 00007ffd2e4b2018