INFO: task syz-executor.5:12535 blocked for more than 143 seconds.
Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:22072 pid:12535 ppid:3616 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
wb_wait_for_completion+0x165/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2f0/0x3d0 fs/fs-writeback.c:2620
try_to_writeback_inodes_sb+0xa5/0xd0 fs/fs-writeback.c:2668
ext4_nonda_switch fs/ext4/inode.c:2950 [inline]
ext4_da_write_begin+0x243/0x760 fs/ext4/inode.c:2977
generic_perform_write+0x314/0x610 mm/filemap.c:3753
ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285
ext4_file_write_iter+0x1d0/0x18e0
__kernel_write_iter+0x323/0x770 fs/read_write.c:517
dump_emit_page+0xa79/0xca0 fs/coredump.c:857
dump_user_range+0x5b/0xf0 fs/coredump.c:908
elf_core_dump+0x3d5b/0x4570 fs/binfmt_elf.c:2311
do_coredump+0x1874/0x2900 fs/coredump.c:755
get_signal+0x147e/0x1810 kernel/signal.c:2844
arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:309
exc_page_fault+0xa2/0x120 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:00000000200000c8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f21bd5abf80 RCX: 00007f21bd48b5a9
RDX: 0000000020000140 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007f21bd4e67b0 R08: 00000000200001c0 R09: 00000000200001c0
R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8b319b2f R14: 00007f21be127300 R15: 0000000000022000
INFO: task syz-executor.5:12578 blocked for more than 144 seconds.
Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:22392 pid:12578 ppid:3616 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
wb_wait_for_completion+0x165/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2f0/0x3d0 fs/fs-writeback.c:2620
try_to_writeback_inodes_sb+0xa5/0xd0 fs/fs-writeback.c:2668
ext4_nonda_switch fs/ext4/inode.c:2950 [inline]
ext4_da_write_begin+0x243/0x760 fs/ext4/inode.c:2977
generic_perform_write+0x314/0x610 mm/filemap.c:3753
ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285
ext4_file_write_iter+0x1d0/0x18e0
__kernel_write_iter+0x323/0x770 fs/read_write.c:517
dump_emit_page+0xa79/0xca0 fs/coredump.c:857
dump_user_range+0x5b/0xf0 fs/coredump.c:908
elf_core_dump+0x3d5b/0x4570 fs/binfmt_elf.c:2311
do_coredump+0x1874/0x2900 fs/coredump.c:755
get_signal+0x147e/0x1810 kernel/signal.c:2844
arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:309
exc_page_fault+0xa2/0x120 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:00000000200000c8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f21bd5abf80 RCX: 00007f21bd48b5a9
RDX: 0000000020000140 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007f21bd4e67b0 R08: 00000000200001c0 R09: 00000000200001c0
R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8b319b2f R14: 00007f21be127300 R15: 0000000000022000
INFO: task syz-executor.5:12682 blocked for more than 144 seconds.
Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:22744 pid:12682 ppid:3616 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
wb_wait_for_completion+0x165/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2f0/0x3d0 fs/fs-writeback.c:2620
try_to_writeback_inodes_sb+0xa5/0xd0 fs/fs-writeback.c:2668
ext4_nonda_switch fs/ext4/inode.c:2950 [inline]
ext4_da_write_begin+0x243/0x760 fs/ext4/inode.c:2977
generic_perform_write+0x314/0x610 mm/filemap.c:3753
ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285
ext4_file_write_iter+0x1d0/0x18e0
__kernel_write_iter+0x323/0x770 fs/read_write.c:517
dump_emit_page+0xa79/0xca0 fs/coredump.c:857
dump_user_range+0x5b/0xf0 fs/coredump.c:908
elf_core_dump+0x3d5b/0x4570 fs/binfmt_elf.c:2311
do_coredump+0x1874/0x2900 fs/coredump.c:755
get_signal+0x147e/0x1810 kernel/signal.c:2844
arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:309
exc_page_fault+0xa2/0x120 arch/x86/mm/fault.c:1578
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
RSP: 002b:00000000200000c8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f21bd5abf80 RCX: 00007f21bd48b5a9
RDX: 0000000020000140 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007f21bd4e67b0 R08: 00000000200001c0 R09: 00000000200001c0
R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8b319b2f R14: 00007f21be127300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 17118 Comm: dhcpcd Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:xas_load lib/xarray.c:240 [inline]
RIP: 0010:xas_find+0x1da/0xa60 lib/xarray.c:1252
Code: 50 45 f7 48 83 fb 02 0f 85 56 01 00 00 49 81 ff 00 10 00 00 0f 86 49 01 00 00 4c 89 eb 4d 8d 6f fe 48 8b 44 24 28 0f b6 04 18 <84> c0 75 6c 48 8b 44 24 18 0f b6 28 4d 89 ee 49 c1 ee 03 49 89 dc
RSP: 0000:ffffc90004a1f9c0 EFLAGS: 00000282
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888079c63a80 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 000000000000001d R08: ffffffff8a445a03 R09: ffffffff8a44595e
R10: 0000000000000002 R11: ffff888079c63a80 R12: ffffc90004a1fb58
R13: ffff888012422ec0 R14: 000000000000000e R15: ffff888012422ec2
FS: 00007fc53280e740(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555c00c6e92b CR3: 00000000651b1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
first_map_page mm/filemap.c:3325 [inline]
filemap_map_pages+0x2ef/0x17f0 mm/filemap.c:3352
do_fault_around mm/memory.c:4523 [inline]
do_read_fault mm/memory.c:4549 [inline]
do_fault mm/memory.c:4683 [inline]
handle_pte_fault mm/memory.c:4955 [inline]
__handle_mm_fault mm/memory.c:5097 [inline]
handle_mm_fault+0x27e8/0x3660 mm/memory.c:5218
do_user_addr_fault+0x69b/0xcb0 arch/x86/mm/fault.c:1428
handle_page_fault arch/x86/mm/fault.c:1519 [inline]
exc_page_fault+0x7a/0x120 arch/x86/mm/fault.c:1575
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x555c00c6e92b
Code: Unable to access opcode bytes at 0x555c00c6e901.
RSP: 002b:00007ffdb56bd208 EFLAGS: 00010246
RAX: 00000000000000c6 RBX: 0000555c018a4e80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000555c00c76b60 RDI: 0000555c018a4ee8
RBP: 00007ffdb56dd688 R08: 00007ffdb56def25 R09: 00007ffdb56defeb
R10: 00007fc532985fc0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000555c018a4e80 R14: 00007ffdb56dda2c R15: 00007ffdb56dda54