INFO: task syz-executor.4:29561 blocked for more than 143 seconds.
      Not tainted 6.5.0-syzkaller-12883-g2a5a4326e583 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:28336 pid:29561 ppid:5066   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6695
 schedule+0xc3/0x180 kernel/sched/core.c:6771
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
 __mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
 blkdev_put+0xff/0x770 block/bdev.c:884
 blkdev_release+0x86/0x90 block/fops.c:604
 __fput+0x3f8/0x910 fs/file_table.c:384
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f27b127cae9
RSP: 002b:00007f27b1f460c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f27b139bf80 RCX: 00007f27b127cae9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003
RBP: 00007f27b12c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f27b139bf80 R15: 00007ffe813e6738
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.5.0-syzkaller-12883-g2a5a4326e583 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
 <TASK>
 __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+0xdf5/0xe40 kernel/hung_task.c:379
 kthread+0x2b8/0x350 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
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 32667 Comm: syz-executor.3 Not tainted 6.5.0-syzkaller-12883-g2a5a4326e583 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:206
Code: 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d 54 c0 0c 0d 48 89 de 5b e9 03 15 59 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 20 15 76 7e 65 8b 15 21 15 76 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc9001865ee50 EFLAGS: 00000293
RAX: ffffffff82428961 RBX: ffffea000108fbc8 RCX: ffff88801fb05940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffea000108fbc0 R08: ffffffff8242893d R09: 1ffffd4000211f78
R10: dffffc0000000000 R11: fffff94000211f79 R12: 0000000000000000
R13: 0000000000001000 R14: 1ffff1100dd38ccb R15: ffffea000108fbc0
FS:  00007f23a3ffe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63de3772b8 CR3: 000000003a482000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
 put_devmap_managed_page_refs include/linux/mm.h:1409 [inline]
 put_devmap_managed_page include/linux/mm.h:1424 [inline]
 put_page include/linux/mm.h:1542 [inline]
 ext4_da_do_write_end fs/ext4/inode.c:2981 [inline]
 ext4_da_write_end+0x701/0x1020 fs/ext4/inode.c:3023
 generic_perform_write+0x419/0x630 mm/filemap.c:3953
 ext4_buffered_write_iter+0xc6/0x350 fs/ext4/file.c:299
 ext4_file_write_iter+0x1d3/0x1ad0 fs/ext4/file.c:717
 __kernel_write_iter+0x32a/0x7c0 fs/read_write.c:517
 dump_emit_page fs/coredump.c:888 [inline]
 dump_user_range+0x46c/0x910 fs/coredump.c:915
 elf_core_dump+0x3b75/0x4490 fs/binfmt_elf.c:2142
 do_coredump+0x1b73/0x2ab0 fs/coredump.c:764
 get_signal+0x145e/0x1840 kernel/signal.c:2878
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
 exc_page_fault+0x57c/0x860 arch/x86/mm/fault.c:1564
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:00000000200000c8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f23a559bf80 RCX: 00007f23a547cae9
RDX: 00000000200001c0 RSI: 00000000200000c0 RDI: 0000000098021400
RBP: 00007f23a54c847a R08: 0000000020000240 R09: 0000000020000240
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007f23a559bf80 R15: 00007ffcd9d33ee8
 </TASK>