RBP: 00007fe1cce0f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd4ddc03af R14: 00007fe1cce0f300 R15: 0000000000022000
======================================================
WARNING: possible circular locking dependency detected
5.10.49 #1 Not tainted
------------------------------------------------------
syz-executor.5/21583 is trying to acquire lock:
ffffffff84d0a6c0 (console_owner){-.-.}-{0:0}, at: console_trylock_spinning kernel/printk/printk.c:1831 [inline]
ffffffff84d0a6c0 (console_owner){-.-.}-{0:0}, at: vprintk_emit+0x2c6/0x4d0 kernel/printk/printk.c:2051

but task is already holding lock:
ffff888056595358 (&sighand->siglock){....}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:379 [inline]
ffff888056595358 (&sighand->siglock){....}-{2:2}, at: tty_signal_session_leader+0xfc/0x5b0 drivers/tty/tty_jobctrl.c:200

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&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

-> #3 (&tty->read_wait){....}-{2:2}:
       __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

-> #2 (&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

-> #1 (&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

-> #0 (console_owner){-.-.}-{0:0}:
       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
       console_trylock_spinning kernel/printk/printk.c:1852 [inline]
       vprintk_emit+0x303/0x4d0 kernel/printk/printk.c:2051
       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

other info that might help us debug this:

Chain exists of:
  console_owner --> &tty->read_wait --> &sighand->siglock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&sighand->siglock);
                               lock(&tty->read_wait);
                               lock(&sighand->siglock);
  lock(console_owner);

 *** DEADLOCK ***

3 locks held by syz-executor.5/21583:
 #0: ffff88804830e1c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_lock+0xbd/0x120 drivers/tty/tty_mutex.c:19
 #1: ffffffff84c0a098 (tasklist_lock){.+.+}-{2:2}, at: tty_signal_session_leader+0x26/0x5b0 drivers/tty/tty_jobctrl.c:197
 #2: ffff888056595358 (&sighand->siglock){....}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:379 [inline]
 #2: ffff888056595358 (&sighand->siglock){....}-{2:2}, at: tty_signal_session_leader+0xfc/0x5b0 drivers/tty/tty_jobctrl.c:200

stack backtrace:
CPU: 1 PID: 21583 Comm: syz-executor.5 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
 console_trylock_spinning kernel/printk/printk.c:1852 [inline]
 vprintk_emit+0x303/0x4d0 kernel/printk/printk.c:2051
 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
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:00007fe1cce0f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000003
RBP: 00007fe1cce0f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd4ddc03af R14: 00007fe1cce0f300 R15: 0000000000022000
hpet: Lost 10 RTC interrupts
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 21581 Comm: syz-executor.2 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_to_user+0x2e/0x180 lib/usercopy.c:29
 copy_to_user include/linux/uaccess.h:200 [inline]
 simple_read_from_buffer+0xcc/0x160 fs/libfs.c:729
 proc_fail_nth_read+0x194/0x220 fs/proc/base.c:1423
 vfs_read+0x228/0x580 fs/read_write.c:494
 ksys_read+0x12d/0x250 fs/read_write.c:634
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x41935c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48
RSP: 002b:00007f77f4e90170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000041935c
RDX: 000000000000000f RSI: 00007f77f4e901e0 RDI: 0000000000000004
RBP: 00007f77f4e901d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdaa3c1e4f R14: 00007f77f4e90300 R15: 0000000000022000
9pnet: p9_fd_create_unix (21580): problem connecting socket: ./file1/file0: -20
9pnet: p9_fd_create_unix (21580): problem connecting socket: ./file1/file0: -20
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 21578 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa 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_trace+0x55/0x360 mm/slub.c:2914
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 alloc_pipe_info+0x10a/0x580 fs/pipe.c:774
 splice_direct_to_actor+0x770/0x980 fs/splice.c:828
 do_splice_direct+0x1c4/0x290 fs/splice.c:976
 generic_copy_file_range fs/read_write.c:1386 [inline]
 do_copy_file_range fs/read_write.c:1409 [inline]
 vfs_copy_file_range+0x57b/0x10e0 fs/read_write.c:1516
 __do_sys_copy_file_range+0x176/0x410 fs/read_write.c:1569
 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:00007f6c05b90188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f6c05b901d0 R08: 000000000200f5ef R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdce2fcfef R14: 00007f6c05b90300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 21582 Comm: syz-executor.0 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa 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_trace+0x55/0x360 mm/slub.c:2914
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 alloc_pipe_info+0x10a/0x580 fs/pipe.c:774
 splice_direct_to_actor+0x770/0x980 fs/splice.c:828
 do_splice_direct+0x1c4/0x290 fs/splice.c:976
 generic_copy_file_range fs/read_write.c:1386 [inline]
 do_copy_file_range fs/read_write.c:1409 [inline]
 vfs_copy_file_range+0x57b/0x10e0 fs/read_write.c:1516
 __do_sys_copy_file_range+0x176/0x410 fs/read_write.c:1569
 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:00007fd8b8406188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007fd8b84061d0 R08: 000000000200f5ef R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcc02b572f R14: 00007fd8b8406300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 21604 Comm: syz-executor.5 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:192 [inline]
 kstrtouint_from_user+0xbd/0x220 lib/kstrtox.c:401
 proc_fail_nth_write+0x78/0x220 fs/proc/base.c:1398
 vfs_write+0x29a/0xa20 fs/read_write.c:603
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4192bf
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007fe1cce0f170 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004192bf
RDX: 0000000000000001 RSI: 00007fe1cce0f1e0 RDI: 0000000000000004
RBP: 00007fe1cce0f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffd4ddc03af R14: 00007fe1cce0f300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 21598 Comm: syz-executor.3 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa 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
 ptlock_alloc+0x1d/0x70 mm/memory.c:5295
 ptlock_init include/linux/mm.h:2194 [inline]
 pgtable_pte_page_ctor include/linux/mm.h:2221 [inline]
 __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline]
 pte_alloc_one+0x68/0x190 arch/x86/mm/pgtable.c:33
 __pte_alloc+0x1d/0x320 mm/memory.c:428
 do_anonymous_page mm/memory.c:3550 [inline]
 handle_pte_fault mm/memory.c:4432 [inline]
 __handle_mm_fault mm/memory.c:4569 [inline]
 handle_mm_fault+0x28ab/0x3530 mm/memory.c:4667
 do_user_addr_fault+0x6d6/0xc30 arch/x86/mm/fault.c:1379
 handle_page_fault arch/x86/mm/fault.c:1436 [inline]
 exc_page_fault+0xa2/0x1a0 arch/x86/mm/fault.c:1492
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580
RIP: 0010:__put_user_nocheck_4+0x3/0x11
Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f
RSP: 0018:ffff88804ee37ba0 EFLAGS: 00050297
RAX: 0000000000000007 RBX: 00007fffffffeffd RCX: 0000000020000000
RDX: 0000000000040000 RSI: ffffffff8221ef4c RDI: ffffffff8544f088
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8544f08f
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000020000000
R13: 0000000000000001 R14: 0000000000000007 R15: dffffc0000000000
 vt_ioctl+0x1077/0x2ec0 drivers/tty/vt/vt_ioctl.c:932
 tty_ioctl+0x80a/0x17c0 drivers/tty/tty_io.c:2742
 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:00007f1386e25188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000020000000 RSI: 0000000000005600 RDI: 0000000000000003
RBP: 00007f1386e251d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffea6385e4f R14: 00007f1386e25300 R15: 0000000000022000
hpet: Lost 3 RTC interrupts
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 21630 Comm: syz-executor.3 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa 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
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
 slab_post_alloc_hook mm/slab.h:535 [inline]
 slab_alloc_node mm/slub.c:2889 [inline]
 slab_alloc mm/slub.c:2897 [inline]
 kmem_cache_alloc+0x159/0x350 mm/slub.c:2902
 ptlock_alloc+0x1d/0x70 mm/memory.c:5295
 ptlock_init include/linux/mm.h:2194 [inline]
 pgtable_pte_page_ctor include/linux/mm.h:2221 [inline]
 __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline]
 pte_alloc_one+0x68/0x190 arch/x86/mm/pgtable.c:33
 __pte_alloc+0x1d/0x320 mm/memory.c:428
 do_anonymous_page mm/memory.c:3550 [inline]
 handle_pte_fault mm/memory.c:4432 [inline]
 __handle_mm_fault mm/memory.c:4569 [inline]
 handle_mm_fault+0x28ab/0x3530 mm/memory.c:4667
 do_user_addr_fault+0x6d6/0xc30 arch/x86/mm/fault.c:1379
 handle_page_fault arch/x86/mm/fault.c:1436 [inline]
 exc_page_fault+0xa2/0x1a0 arch/x86/mm/fault.c:1492
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580
RIP: 0010:__put_user_nocheck_4+0x3/0x11
Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f
RSP: 0018:ffff88803ae67ba0 EFLAGS: 00050297
RAX: 0000000000000007 RBX: 00007fffffffeffd RCX: 0000000020000000
RDX: 0000000000040000 RSI: ffffffff8221ef4c RDI: ffffffff8544f088
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8544f08f
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000020000000
R13: 0000000000000001 R14: 0000000000000007 R15: dffffc0000000000
 vt_ioctl+0x1077/0x2ec0 drivers/tty/vt/vt_ioctl.c:932
 tty_ioctl+0x80a/0x17c0 drivers/tty/tty_io.c:2742
 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:00007f1386e25188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000020000000 RSI: 0000000000005600 RDI: 0000000000000003
RBP: 00007f1386e251d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffea6385e4f R14: 00007f1386e25300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 21640 Comm: syz-executor.0 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa 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
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
 slab_post_alloc_hook mm/slab.h:535 [inline]
 slab_alloc_node mm/slub.c:2889 [inline]
 slab_alloc mm/slub.c:2897 [inline]
 kmem_cache_alloc_trace+0x151/0x360 mm/slub.c:2914
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 alloc_pipe_info+0x10a/0x580 fs/pipe.c:774
 splice_direct_to_actor+0x770/0x980 fs/splice.c:828
 do_splice_direct+0x1c4/0x290 fs/splice.c:976
 generic_copy_file_range fs/read_write.c:1386 [inline]
 do_copy_file_range fs/read_write.c:1409 [inline]
 vfs_copy_file_range+0x57b/0x10e0 fs/read_write.c:1516
 __do_sys_copy_file_range+0x176/0x410 fs/read_write.c:1569
 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:00007fd8b83e5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 0000000000466609
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007fd8b83e51d0 R08: 000000000200f5ef R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcc02b572f R14: 00007fd8b83e5300 R15: 0000000000022000
hpet: Lost 1 RTC interrupts
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 21644 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa 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
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
 slab_post_alloc_hook mm/slab.h:535 [inline]
 slab_alloc_node mm/slub.c:2889 [inline]
 slab_alloc mm/slub.c:2897 [inline]
 kmem_cache_alloc_trace+0x151/0x360 mm/slub.c:2914
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 alloc_pipe_info+0x10a/0x580 fs/pipe.c:774
 splice_direct_to_actor+0x770/0x980 fs/splice.c:828
 do_splice_direct+0x1c4/0x290 fs/splice.c:976
 generic_copy_file_range fs/read_write.c:1386 [inline]
 do_copy_file_range fs/read_write.c:1409 [inline]
 vfs_copy_file_range+0x57b/0x10e0 fs/read_write.c:1516
 __do_sys_copy_file_range+0x176/0x410 fs/read_write.c:1569
 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:00007f6c05b6f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 0000000000466609
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f6c05b6f1d0 R08: 000000000200f5ef R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdce2fcfef R14: 00007f6c05b6f300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 21668 Comm: syz-executor.3 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
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa 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
 anon_vma_chain_alloc mm/rmap.c:136 [inline]
 __anon_vma_prepare+0x62/0x4f0 mm/rmap.c:190
 anon_vma_prepare include/linux/rmap.h:153 [inline]
 do_anonymous_page mm/memory.c:3580 [inline]
 handle_pte_fault mm/memory.c:4432 [inline]
 __handle_mm_fault mm/memory.c:4569 [inline]
 handle_mm_fault+0x2b59/0x3530 mm/memory.c:4667
 do_user_addr_fault+0x6d6/0xc30 arch/x86/mm/fault.c:1379
 handle_page_fault arch/x86/mm/fault.c:1436 [inline]
 exc_page_fault+0xa2/0x1a0 arch/x86/mm/fault.c:1492
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580
RIP: 0010:__put_user_nocheck_4+0x3/0x11
Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f
RSP: 0018:ffff88805570fba0 EFLAGS: 00050297
RAX: 0000000000000007 RBX: 00007fffffffeffd RCX: 0000000020000000
RDX: 0000000000040000 RSI: ffffffff8221ef4c RDI: ffffffff8544f088
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8544f08f
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000020000000
R13: 0000000000000001 R14: 0000000000000007 R15: dffffc0000000000
 vt_ioctl+0x1077/0x2ec0 drivers/tty/vt/vt_ioctl.c:932
 tty_ioctl+0x80a/0x17c0 drivers/tty/tty_io.c:2742
 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:00007f1386e25188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609
RDX: 0000000020000000 RSI: 0000000000005600 RDI: 0000000000000003
RBP: 00007f1386e251d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffea6385e4f R14: 00007f1386e25300 R15: 0000000000022000