INFO: task syz.1.17:6818 blocked for more than 147 seconds.
      Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.17        state:D stack:28368 pid:6818  tgid:6813  ppid:6558   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x184c/0x4bd0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x147/0x320 kernel/sched/core.c:6848
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6905
 rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
 __down_read_common kernel/locking/rwsem.c:1248 [inline]
 __down_read kernel/locking/rwsem.c:1261 [inline]
 down_read+0x701/0xa40 kernel/locking/rwsem.c:1526
 inode_lock_shared include/linux/fs.h:828 [inline]
 lookup_slow+0x45/0x70 fs/namei.c:1807
 walk_component+0x2e1/0x410 fs/namei.c:2112
 lookup_last fs/namei.c:2610 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2634
 filename_lookup+0x29f/0x670 fs/namei.c:2663
 user_path_at+0x36/0x50 fs/namei.c:3070
 do_mount fs/namespace.c:3844 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x293/0x3c0 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f85a4585d29
RSP: 002b:00007f85a53cd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f85a4776080 RCX: 00007f85a4585d29
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f85a4601aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f85a4776080 R15: 00007ffcb3793ac8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x23d/0x360 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x194/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
 watchdog+0xfe6/0x1030 kernel/hung_task.c:397
 kthread+0x2ec/0x380 kernel/kthread.c:389
 ret_from_fork+0x47/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6822 Comm: syz.4.20 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:kasan_check_range+0x7/0x290 mm/kasan/generic.c:188
Code: 7c 8d e8 0c a8 e3 ff 0f 0b cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 41 54 <53> b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56
RSP: 0018:ffffc90003617080 EFLAGS: 00000246
RAX: ffffffff82277ecc RBX: ffff8881ad39f570 RCX: ffffffff82277e64
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881ad39f5d0
RBP: ffff8881ad39f5d0 R08: ffffffff82277ea0 R09: 1ffff11035a73ed7
R10: dffffc0000000000 R11: ffffed1035a73ed8 R12: 0000000000000000
R13: ffffea0005b64588 R14: ffff8881ad39f828 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9d59238ba8 CR3: 000000000dd34000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 buffer_busy fs/buffer.c:2876 [inline]
 drop_buffers+0x64/0x4c0 fs/buffer.c:2888
 try_to_free_buffers+0x1cc/0x3a0 fs/buffer.c:2947
 block_invalidate_folio+0x645/0x780 fs/buffer.c:1644
 folio_invalidate mm/truncate.c:126 [inline]
 truncate_cleanup_folio+0x203/0x300 mm/truncate.c:146
 truncate_inode_pages_range+0x2e1/0x10e0 mm/truncate.c:326
 sysv_evict_inode+0x27/0x110 fs/sysv/inode.c:289
 evict+0x4e4/0x990 fs/inode.c:796
 __dentry_kill+0x200/0x610 fs/dcache.c:625
 dput+0x19b/0x2b0 fs/dcache.c:867
 shrink_dcache_for_umount+0xb0/0x170 fs/dcache.c:1577
 generic_shutdown_super+0x66/0x2d0 fs/super.c:620
 kill_block_super+0x40/0x90 fs/super.c:1710
 deactivate_locked_super+0xc0/0x120 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x24b/0x310 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0xa26/0x28d0 kernel/exit.c:938
 do_group_exit+0x203/0x2b0 kernel/exit.c:1087
 get_signal+0x16ae/0x1740 kernel/signal.c:3017
 arch_do_signal_or_restart+0x92/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x320 kernel/entry/common.c:218
 do_syscall_64+0x8a/0x180 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f6232585d29
Code: Unable to access opcode bytes at 0x7f6232585cff.
RSP: 002b:00007f623331a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffe2 RBX: 00007f6232775fa0 RCX: 00007f6232585d29
RDX: 0000000000000000 RSI: 0000000400141042 RDI: 0000000020000080
RBP: 00007f6232601aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6232775fa0 R15: 00007ffcc5564a78
 </TASK>