FAT-fs (loop2): error, corrupted directory (invalid entries)
FAT-fs (loop2): Filesystem has been set read-only
======================================================
WARNING: possible circular locking dependency detected
5.10.49 #1 Not tainted
------------------------------------------------------
syz-executor.7/8183 is trying to acquire lock:
ffff888021c13578 (&tty->read_wait){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
ffff888021c13578 (&tty->read_wait){....}-{2:2}, at: io_poll_double_wake+0x1f8/0x550 fs/io_uring.c:5074
but task is already holding lock:
ffff888021c13528 (&tty->write_wait){-.-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&tty->write_wait){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159
__wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122
tty_port_default_wakeup+0x26/0x40 drivers/tty/tty_port.c:50
serial8250_tx_chars+0x516/0xb40 drivers/tty/serial/8250/8250_port.c:1844
serial8250_handle_irq.part.0+0x3f1/0x4c0 drivers/tty/serial/8250/8250_port.c:1931
serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1904 [inline]
serial8250_default_handle_irq+0xb8/0x230 drivers/tty/serial/8250/8250_port.c:1947
serial8250_interrupt+0xf4/0x1a0 drivers/tty/serial/8250/8250_core.c:126
__handle_irq_event_percpu+0x2ef/0x810 kernel/irq/handle.c:156
handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
handle_irq_event+0x102/0x290 kernel/irq/handle.c:213
handle_edge_irq+0x249/0xd00 kernel/irq/chip.c:819
asm_call_irq_on_stack+0x12/0x20
__run_irq_on_irqstack arch/x86/include/asm/irq_stack.h:48 [inline]
run_irq_on_irqstack_cond arch/x86/include/asm/irq_stack.h:101 [inline]
handle_irq arch/x86/kernel/irq.c:230 [inline]
__common_interrupt arch/x86/kernel/irq.c:249 [inline]
common_interrupt+0xe6/0x190 arch/x86/kernel/irq.c:239
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:635
native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irqrestore+0x25/0x40 kernel/locking/spinlock.c:191
spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
uart_write+0x304/0x580 drivers/tty/serial/serial_core.c:615
do_output_char+0x5e4/0x860 drivers/tty/n_tty.c:442
process_output drivers/tty/n_tty.c:509 [inline]
n_tty_write+0x487/0xf90 drivers/tty/n_tty.c:2361
do_tty_write drivers/tty/tty_io.c:1028 [inline]
file_tty_write.constprop.0+0x4f8/0x8d0 drivers/tty/tty_io.c:1118
redirected_tty_write+0xa1/0xc0 drivers/tty/tty_io.c:1125
call_write_iter include/linux/fs.h:1903 [inline]
do_iter_readv_writev+0x476/0x750 fs/read_write.c:740
do_iter_write+0x18d/0x670 fs/read_write.c:866
vfs_writev+0x1aa/0x5d0 fs/read_write.c:939
do_writev+0x139/0x300 fs/read_write.c:982
do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
-> #3 (&port_lock_key){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159
serial8250_console_write+0x87a/0xa90 drivers/tty/serial/8250/8250_port.c:3304
call_console_drivers kernel/printk/printk.c:1909 [inline]
console_unlock+0x826/0xb30 kernel/printk/printk.c:2523
register_console kernel/printk/printk.c:2864 [inline]
register_console+0x53d/0x800 kernel/printk/printk.c:2754
univ8250_console_init+0x3a/0x46 drivers/tty/serial/8250/8250_core.c:690
console_init+0x361/0x4fa kernel/printk/printk.c:2974
start_kernel+0x2f9/0x4a2 init/main.c:988
secondary_startup_64_no_verify+0xc2/0xcb
-> #2 (console_owner){-.-.}-{0:0}:
console_lock_spinning_enable kernel/printk/printk.c:1761 [inline]
console_unlock+0x360/0xb30 kernel/printk/printk.c:2520
vprintk_emit+0x1da/0x4d0 kernel/printk/printk.c:2052
vprintk_func+0x8b/0x140 kernel/printk/printk_safe.c:401
printk+0xba/0xed kernel/printk/printk.c:2100
fail_dump lib/fault-inject.c:45 [inline]
should_fail+0x472/0x5a0 lib/fault-inject.c:146
should_failslab+0x5/0x10 mm/slab_common.c:1193
slab_pre_alloc_hook mm/slab.h:516 [inline]
slab_alloc_node mm/slub.c:2814 [inline]
slab_alloc mm/slub.c:2897 [inline]
kmem_cache_alloc+0x5b/0x350 mm/slub.c:2902
__sigqueue_alloc+0x23f/0x550 kernel/signal.c:435
__send_signal+0x5db/0x1030 kernel/signal.c:1116
tty_signal_session_leader+0x18d/0x5b0 drivers/tty/tty_jobctrl.c:211
__tty_hangup.part.0+0x33c/0x9b0 drivers/tty/tty_io.c:619
__tty_hangup drivers/tty/tty_io.c:574 [inline]
tty_vhangup drivers/tty/tty_io.c:697 [inline]
tty_ioctl+0x103e/0x17c0 drivers/tty/tty_io.c:2683
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739
do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
-> #1 (&sighand->siglock){....}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159
__lock_task_sighand+0x108/0x2e0 kernel/signal.c:1391
lock_task_sighand include/linux/sched/signal.h:688 [inline]
task_work_add+0x1db/0x2b0 kernel/task_work.c:58
io_req_task_work_add fs/io_uring.c:2048 [inline]
__io_async_wake+0x443/0x8d0 fs/io_uring.c:4961
__wake_up_common+0x14c/0x4c0 kernel/sched/wait.c:93
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:123
tty_ldisc_lock+0x40/0xb0 drivers/tty/tty_ldisc.c:335
tty_ldisc_hangup+0x204/0x690 drivers/tty/tty_ldisc.c:744
__tty_hangup.part.0+0x50d/0x9b0 drivers/tty/tty_io.c:624
__tty_hangup drivers/tty/tty_io.c:574 [inline]
tty_vhangup drivers/tty/tty_io.c:697 [inline]
tty_ioctl+0x103e/0x17c0 drivers/tty/tty_io.c:2683
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739
do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
-> #0 (&tty->read_wait){....}-{2:2}:
check_prev_add kernel/locking/lockdep.c:2871 [inline]
check_prevs_add kernel/locking/lockdep.c:2996 [inline]
validate_chain kernel/locking/lockdep.c:3611 [inline]
__lock_acquire+0x2a48/0x5a80 kernel/locking/lockdep.c:4836
lock_acquire kernel/locking/lockdep.c:5446 [inline]
lock_acquire+0x197/0x490 kernel/locking/lockdep.c:5411
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
io_poll_double_wake+0x1f8/0x550 fs/io_uring.c:5074
__wake_up_common+0x14c/0x4c0 kernel/sched/wait.c:93
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:123
tty_ldisc_lock+0x55/0xb0 drivers/tty/tty_ldisc.c:336
tty_ldisc_hangup+0x204/0x690 drivers/tty/tty_ldisc.c:744
__tty_hangup.part.0+0x50d/0x9b0 drivers/tty/tty_io.c:624
__tty_hangup drivers/tty/tty_io.c:574 [inline]
tty_vhangup drivers/tty/tty_io.c:697 [inline]
tty_ioctl+0x103e/0x17c0 drivers/tty/tty_io.c:2683
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739
do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
other info that might help us debug this:
Chain exists of:
&tty->read_wait --> &port_lock_key --> &tty->write_wait
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&tty->write_wait);
lock(&port_lock_key);
lock(&tty->write_wait);
lock(&tty->read_wait);
*** DEADLOCK ***
2 locks held by syz-executor.7/8183:
#0: ffff888021c131c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_lock+0xbd/0x120 drivers/tty/tty_mutex.c:19
#1: ffff888021c13528 (&tty->write_wait){-.-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122
stack backtrace:
CPU: 1 PID: 8183 Comm: syz-executor.7 Not tainted 5.10.49 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:118
check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2120
check_prev_add kernel/locking/lockdep.c:2871 [inline]
check_prevs_add kernel/locking/lockdep.c:2996 [inline]
validate_chain kernel/locking/lockdep.c:3611 [inline]
__lock_acquire+0x2a48/0x5a80 kernel/locking/lockdep.c:4836
lock_acquire kernel/locking/lockdep.c:5446 [inline]
lock_acquire+0x197/0x490 kernel/locking/lockdep.c:5411
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x27/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:354 [inline]
io_poll_double_wake+0x1f8/0x550 fs/io_uring.c:5074
__wake_up_common+0x14c/0x4c0 kernel/sched/wait.c:93
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:123
tty_ldisc_lock+0x55/0xb0 drivers/tty/tty_ldisc.c:336
tty_ldisc_hangup+0x204/0x690 drivers/tty/tty_ldisc.c:744
__tty_hangup.part.0+0x50d/0x9b0 drivers/tty/tty_io.c:624
__tty_hangup drivers/tty/tty_io.c:574 [inline]
tty_vhangup drivers/tty/tty_io.c:697 [inline]
tty_ioctl+0x103e/0x17c0 drivers/tty/tty_io.c:2683
vfs_ioctl fs/ioctl.c:48 [inline]
__do_sys_ioctl fs/ioctl.c:753 [inline]
__se_sys_ioctl fs/ioctl.c:739 [inline]
__x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739
do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x466609
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1d7bc66188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000004
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd69c4f46f R14: 00007f1d7bc66300 R15: 0000000000022000
nfs4: Unknown parameter 'tmpfs'
FAT-fs (loop2): Unrecognized mount option "`B~���ol������\�rXZ�C+e)BXf�̦��t�MY)x" or missing value