INFO: task syz.0.130:6181 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.130       state:D stack:0     pid:6181  tgid:6178  ppid:5646   flags:0x00000006
Call Trace:
[<ffffffff85fe3a74>] context_switch kernel/sched/core.c:5315 [inline]
[<ffffffff85fe3a74>] __schedule+0xd5a/0x3886 kernel/sched/core.c:6675
[<ffffffff85fe6664>] __schedule_loop kernel/sched/core.c:6752 [inline]
[<ffffffff85fe6664>] schedule+0xc4/0x324 kernel/sched/core.c:6767
[<ffffffff85fe6fac>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6824
[<ffffffff85fea828>] __mutex_lock_common kernel/locking/mutex.c:684 [inline]
[<ffffffff85fea828>] __mutex_lock+0x86a/0x1022 kernel/locking/mutex.c:752
[<ffffffff85feaff4>] mutex_lock_nested+0x14/0x1c kernel/locking/mutex.c:804
[<ffffffff81273822>] bdev_release+0x12c/0x600 block/bdev.c:1087
[<ffffffff81274ad6>] blkdev_release+0x1a/0x26 block/fops.c:639
[<ffffffff80a2c758>] __fput+0x378/0x9e6 fs/file_table.c:431
[<ffffffff80a2ce6c>] ____fput+0x1c/0x26 fs/file_table.c:459
[<ffffffff8014fb7c>] task_work_run+0x16a/0x25e kernel/task_work.c:228
[<ffffffff8010be48>] get_signal+0x1aa/0x23b0 kernel/signal.c:2690
[<ffffffff8000bb06>] arch_do_signal_or_restart+0x8d6/0x1190 arch/riscv/kernel/signal.c:437
[<ffffffff85fdac04>] exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
[<ffffffff85fdac04>] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
[<ffffffff85fdac04>] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
[<ffffffff85fdac04>] syscall_exit_to_user_mode+0x2a6/0x31e kernel/entry/common.c:218
[<ffffffff85fd9b26>] do_trap_ecall_u+0x86/0x216 arch/riscv/kernel/traps.c:345
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce
INFO: task syz.0.130:6184 blocked for more than 430 seconds.
      Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.130       state:D stack:0     pid:6184  tgid:6178  ppid:5646   flags:0x00000006
Call Trace:
[<ffffffff85fe3a74>] context_switch kernel/sched/core.c:5315 [inline]
[<ffffffff85fe3a74>] __schedule+0xd5a/0x3886 kernel/sched/core.c:6675
[<ffffffff85fe6664>] __schedule_loop kernel/sched/core.c:6752 [inline]
[<ffffffff85fe6664>] schedule+0xc4/0x324 kernel/sched/core.c:6767
[<ffffffff85fe693c>] io_schedule+0x78/0xd4 kernel/sched/core.c:7552
[<ffffffff806fac7c>] folio_wait_bit_common+0x398/0x944 mm/filemap.c:1309
[<ffffffff807058c6>] folio_put_wait_locked mm/filemap.c:1473 [inline]
[<ffffffff807058c6>] do_read_cache_folio+0x2c0/0x4d2 mm/filemap.c:3807
[<ffffffff80705b26>] read_cache_folio+0x4e/0x68 mm/filemap.c:3857
[<ffffffff81300942>] read_mapping_folio include/linux/pagemap.h:1011 [inline]
[<ffffffff81300942>] read_part_sector+0xc0/0x516 block/partitions/core.c:714
[<ffffffff81300f68>] msdos_partition+0x140/0x25ac block/partitions/msdos.c:592
[<ffffffff812ff7c6>] check_partition block/partitions/core.c:138 [inline]
[<ffffffff812ff7c6>] blk_add_partitions block/partitions/core.c:581 [inline]
[<ffffffff812ff7c6>] bdev_disk_changed+0x5de/0x139c block/partitions/core.c:685
[<ffffffff81270850>] blkdev_get_whole+0x17c/0x514 block/bdev.c:707
[<ffffffff81272ac6>] bdev_open+0x86a/0xfa8 block/bdev.c:916
[<ffffffff81278d14>] blkdev_open+0x334/0x3f0 block/fops.c:631
[<ffffffff80a17e08>] do_dentry_open+0x5d0/0x10a2 fs/open.c:958
[<ffffffff80a1c820>] vfs_open+0xbe/0x37a fs/open.c:1088
[<ffffffff80a69c66>] do_open fs/namei.c:3774 [inline]
[<ffffffff80a69c66>] path_openat+0x1b70/0x28c2 fs/namei.c:3933
[<ffffffff80a6ab2a>] do_filp_open+0x172/0x328 fs/namei.c:3960
[<ffffffff80a1d5c0>] do_sys_openat2+0x174/0x1ca fs/open.c:1415
[<ffffffff80a1df6c>] do_sys_open fs/open.c:1430 [inline]
[<ffffffff80a1df6c>] __do_sys_openat fs/open.c:1446 [inline]
[<ffffffff80a1df6c>] __se_sys_openat fs/open.c:1441 [inline]
[<ffffffff80a1df6c>] __riscv_sys_openat+0x178/0x1fe fs/open.c:1441
[<ffffffff8000f2d4>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fd9c4a>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by khungtaskd/36:
 #0: ffffffff87fcc100 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
2 locks held by syslogd/2993:
2 locks held by getty/3165:
 #0: ff6000001c9770a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ff2000000008b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd7c/0x129a drivers/tty/n_tty.c:2211
2 locks held by syz-executor/3202:
2 locks held by kworker/1:3/3204:
2 locks held by kworker/0:6/5050:
1 lock held by syz.0.130/6181:
 #0: ff60000017df94c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x12c/0x600 block/bdev.c:1087
1 lock held by syz.0.130/6184:
 #0: ff60000017df94c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0x672/0xfa8 block/bdev.c:904
1 lock held by syz.0.342/7150:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 36 Comm: khungtaskd Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a14>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff85f7c3cc>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff85fd797a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff85fd797a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff85fd7a0a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85f3faae>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85f3fd66>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff80019974>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432c3c>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432c3c>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432c3c>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154e14>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff85ffcbde>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7168 Comm: syz.1.348 Not tainted 6.12.0-rc1-syzkaller-00010-gc05ad457ce8c #0
Hardware name: riscv-virtio,qemu (DT)
epc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
epc : _raw_spin_unlock_irqrestore+0x36/0xd6 kernel/locking/spinlock.c:194
 ra : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
 ra : _raw_spin_unlock_irqrestore+0x86/0xd6 kernel/locking/spinlock.c:194
epc : ffffffff85ffb7aa ra : ffffffff85ffb7fa sp : ff20000003b37ab0
 gp : ffffffff897bea80 tp : ff6000001a809a40 t0 : ff6000001a80a560
 t1 : fffffffef2155795 t2 : 0000000000000001 s0 : ff20000003b37ad0
 s1 : 0000000000000002 a0 : 0000000000000001 a1 : ffffffff8643e620
 a2 : 0000000000000002 a3 : 0000000000000001 a4 : 0000000000000001
 a5 : 0000000000000000 a6 : 0000000000000003 a7 : ffffffff90aabcab
 s2 : ffffffff90aabca8 s3 : ffffffff90aabca8 s4 : ffffffff864661a0
 s5 : ffffffff90aabca0 s6 : 1fe4000000766f60 s7 : 0000000000000000
 s8 : ff20000003b37c70 s9 : ff20000003b37ba0 s10: ff20000003b37b30
 s11: 0000000200000022 t3 : 1fec0000059df13b t4 : fffffffef2155795
 t5 : fffffffef2155796 t6 : 1fec0000035014b0
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff85ffb7aa>] arch_local_irq_restore arch/riscv/include/asm/irqflags.h:51 [inline]
[<ffffffff85ffb7aa>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
[<ffffffff85ffb7aa>] _raw_spin_unlock_irqrestore+0x36/0xd6 kernel/locking/spinlock.c:194
[<ffffffff814accca>] __debug_object_init+0x2ac/0x340 lib/debugobjects.c:645
[<ffffffff814acd9a>] debug_object_init_on_stack lib/debugobjects.c:684 [inline]
[<ffffffff814acd9a>] debug_object_init_on_stack+0x1a/0x22 lib/debugobjects.c:679
[<ffffffff8033feee>] hrtimer_init_sleeper_on_stack kernel/time/hrtimer.c:448 [inline]
[<ffffffff8033feee>] hrtimer_nanosleep+0xc6/0x2b6 kernel/time/hrtimer.c:2078
[<ffffffff803551f4>] common_nsleep+0x8c/0xbc kernel/time/posix-timers.c:1365
[<ffffffff8035bb8a>] __do_sys_clock_nanosleep kernel/time/posix-timers.c:1411 [inline]
[<ffffffff8035bb8a>] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1388 [inline]
[<ffffffff8035bb8a>] __riscv_sys_clock_nanosleep+0x292/0x398 kernel/time/posix-timers.c:1388
[<ffffffff8000f2d4>] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
[<ffffffff85fd9c4a>] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331
[<ffffffff85ffcac6>] _new_vmalloc_restore_context_a0+0xc2/0xce