INFO: task syz-executor.4:22613 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:25872 pid:22613 tgid:22611 ppid:12363  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x177f/0x49a0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 super_lock+0x335/0x400 fs/super.c:114
 user_get_super+0xd2/0x180 fs/super.c:988
 quotactl_block fs/quota/quota.c:890 [inline]
 __do_sys_quotactl fs/quota/quota.c:955 [inline]
 __se_sys_quotactl+0x52a/0xa30 fs/quota/quota.c:917
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f0092e7dda9
RSP: 002b:00007f0093ba00c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f0092fabf80 RCX: 00007f0092e7dda9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffff80000500
RBP: 00007f0092eca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0092fabf80 R15: 00007fff64183928
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:9/2466:
2 locks held by getty/4814:
 #0: ffff88802afd40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.4/12108:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 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+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12108 Comm: syz-executor.4 Not tainted 6.8.0-rc7-syzkaller-00250-g137e0ec05aeb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:86 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x94/0x290 mm/kasan/generic.c:189
Code: 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee <e9> 1e 01 00 00 45 89 dc 41 83 e4 07 0f 84 b5 00 00 00 41 80 3b 00
RSP: 0018:ffffc90013147540 EFLAGS: 00000256
RAX: ffffffff81cc6101 RBX: 1ffffd40004374a8 RCX: ffffffff81cc61aa
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea00021ba540
RBP: 0000000000000000 R08: ffffea00021ba547 R09: 1ffffd40004374a8
R10: dffffc0000000000 R11: fffff940004374a9 R12: 1ffffd40004374a8
R13: ffffea00021ba540 R14: dffffc0000000001 R15: fffff940004374a9
FS:  00007fd7abdba6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01cbc6720 CR3: 0000000026dca000 CR4: 00000000003506f0
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]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 folio_test_idle include/linux/page-flags.h:589 [inline]
 folio_mark_accessed+0x6ba/0x11b0 mm/swap.c:487
 __find_get_block+0x540/0x10d0 fs/buffer.c:1405
 bdev_getblk+0x38/0x610 fs/buffer.c:1423
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 exfat_get_dentry+0x53b/0x730 fs/exfat/dir.c:770
 exfat_create_upcase_table+0x24f/0xf60 fs/exfat/nls.c:758
 __exfat_fill_super fs/exfat/super.c:591 [inline]
 exfat_fill_super+0x1196/0x2990 fs/exfat/super.c:641
 get_tree_bdev+0x3f7/0x570 fs/super.c:1614
 vfs_get_tree+0x90/0x2a0 fs/super.c:1779
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fd7ab07f4aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007fd7abdb9ef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fd7abdb9f80 RCX: 00007fd7ab07f4aa
RDX: 00000000200000c0 RSI: 0000000020001540 RDI: 00007fd7abdb9f40
RBP: 00000000200000c0 R08: 00007fd7abdb9f80 R09: 000000002000004c
R10: 000000002000004c R11: 0000000000000202 R12: 0000000020001540
R13: 00007fd7abdb9f40 R14: 00000000000014f5 R15: 0000000020000180
 </TASK>