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possible deadlock in vprintk_emit

Status: upstream: reported C repro on 2019/04/11 22:47
Reported-by: syzbot+501ca3a2c90035beb872@syzkaller.appspotmail.com
First crash: 1841d, last: 946d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-414 possible deadlock in vprintk_emit 5 1854d 1840d 0/1 auto-closed as invalid on 2019/09/26 04:13
android-414 possible deadlock in vprintk_emit (2) 1 1648d 1648d 0/1 auto-closed as invalid on 2020/02/18 18:06
upstream possible deadlock in vprintk_emit serial C 1433 1550d 2149d 0/26 closed as dup on 2018/06/08 07:50
linux-4.14 possible deadlock in vprintk_emit C inconclusive 280 1428d 1837d 0/1 upstream: reported C repro on 2019/04/16 05:43
▶ ▼ Fix bisection attempts (21)
Created Duration User Patch Repo Result
2021/10/23 10:00 14m bisect fix linux-4.19.y error job log (0)
2021/09/22 21:49 26m bisect fix linux-4.19.y job log (0) log
2021/08/23 18:36 31m bisect fix linux-4.19.y job log (0) log
2021/07/24 18:09 26m bisect fix linux-4.19.y job log (0) log
2021/06/24 17:45 23m bisect fix linux-4.19.y job log (0) log
2021/05/25 12:48 28m bisect fix linux-4.19.y job log (0) log
2021/04/25 11:34 28m bisect fix linux-4.19.y job log (0) log
2021/03/26 04:41 22m bisect fix linux-4.19.y job log (0) log
2021/02/24 03:43 24m bisect fix linux-4.19.y job log (0) log
2021/01/24 03:00 24m bisect fix linux-4.19.y job log (0) log
2020/12/25 02:27 23m bisect fix linux-4.19.y job log (0) log
2020/11/25 02:00 23m bisect fix linux-4.19.y job log (0) log
2020/10/26 01:23 23m bisect fix linux-4.19.y job log (0) log
2020/09/25 22:54 23m bisect fix linux-4.19.y job log (0) log
2020/08/26 21:35 28m bisect fix linux-4.19.y job log (0) log
2020/07/27 21:09 25m bisect fix linux-4.19.y job log (0) log
2020/06/27 20:32 23m bisect fix linux-4.19.y job log (0) log
2020/05/28 14:39 24m bisect fix linux-4.19.y job log (0) log
2020/04/28 13:51 25m bisect fix linux-4.19.y job log (0) log
2020/03/29 13:27 23m bisect fix linux-4.19.y job log (0) log
2020/02/28 12:25 27m bisect fix linux-4.19.y job log (0) log

Sample crash report:
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7588 Comm: syz-executor157 Not tainted 4.19.34 #2
======================================================
WARNING: possible circular locking dependency detected
4.19.34 #2 Not tainted
------------------------------------------------------
syz-executor157/7587 is trying to acquire lock:
00000000a9fa66c1 (console_owner){-...}, at: console_trylock_spinning kernel/printk/printk.c:1662 [inline]
00000000a9fa66c1 (console_owner){-...}, at: vprintk_emit+0x348/0x690 kernel/printk/printk.c:1926

but task is already holding lock:
000000002394c496 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xff/0x200 drivers/tty/pty.c:119

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&(&port->lock)->rlock){-.-.}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
       tty_port_tty_get+0x22/0x80 drivers/tty/tty_port.c:288
       tty_port_default_wakeup+0x16/0x40 drivers/tty/tty_port.c:47
       tty_port_tty_wakeup+0x5d/0x70 drivers/tty/tty_port.c:390
       uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:103
       serial8250_tx_chars+0x4a4/0xb20 drivers/tty/serial/8250/8250_port.c:1806
       serial8250_handle_irq.part.0+0x1e2/0x270 drivers/tty/serial/8250/8250_port.c:1879
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1865 [inline]
       serial8250_default_handle_irq+0xc5/0x150 drivers/tty/serial/8250/8250_port.c:1895
       serial8250_interrupt+0x102/0x1e0 drivers/tty/serial/8250/8250_core.c:125
       __handle_irq_event_percpu+0x146/0x900 kernel/irq/handle.c:149
       handle_irq_event_percpu+0x74/0x160 kernel/irq/handle.c:189
       handle_irq_event+0xa7/0x134 kernel/irq/handle.c:206
       handle_edge_irq+0x264/0x8e0 kernel/irq/chip.c:791
       generic_handle_irq_desc include/linux/irqdesc.h:155 [inline]
       handle_irq+0x252/0x3d8 arch/x86/kernel/irq_64.c:78
       do_IRQ+0x99/0x1d0 arch/x86/kernel/irq.c:246
       ret_from_intr+0x0/0x1e
       arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline]
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
       _raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:184
       spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
       uart_write+0x3a9/0x6f0 drivers/tty/serial/serial_core.c:615
       process_output_block drivers/tty/n_tty.c:593 [inline]
       n_tty_write+0x3ff/0x1100 drivers/tty/n_tty.c:2331
       do_tty_write drivers/tty/tty_io.c:958 [inline]
       tty_write+0x45b/0x7a0 drivers/tty/tty_io.c:1042
       redirected_tty_write+0xb2/0xc0 drivers/tty/tty_io.c:1063
       __vfs_write+0x116/0x820 fs/read_write.c:485
       vfs_write+0x20c/0x560 fs/read_write.c:549
       ksys_write+0xea/0x1f0 fs/read_write.c:598
       __do_sys_write fs/read_write.c:610 [inline]
       __se_sys_write fs/read_write.c:607 [inline]
       __x64_sys_write+0x73/0xb0 fs/read_write.c:607
       do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #1 (&port_lock_key){-.-.}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
       serial8250_console_write+0x7ed/0xa10 drivers/tty/serial/8250/8250_port.c:3247
       univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:590
       call_console_drivers kernel/printk/printk.c:1729 [inline]
       console_unlock+0xbbe/0x1080 kernel/printk/printk.c:2410
       vprintk_emit+0x238/0x690 kernel/printk/printk.c:1927
       vprintk_default+0x28/0x30 kernel/printk/printk.c:1968
       vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
       printk+0xba/0xed kernel/printk/printk.c:2001
       register_console+0x787/0xb90 kernel/printk/printk.c:2725
       univ8250_console_init+0x3e/0x4b drivers/tty/serial/8250/8250_core.c:685
       console_init+0x4f7/0x761 kernel/printk/printk.c:2811
       start_kernel+0x59f/0x8c8 init/main.c:661
       x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470
       x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:451
       secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243

-> #0 (console_owner){-...}:
       lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903
       console_trylock_spinning kernel/printk/printk.c:1683 [inline]
       vprintk_emit+0x385/0x690 kernel/printk/printk.c:1926
       vprintk_default+0x28/0x30 kernel/printk/printk.c:1968
       vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
       printk+0xba/0xed kernel/printk/printk.c:2001
       fail_dump lib/fault-inject.c:44 [inline]
       should_fail+0x6f1/0x85c lib/fault-inject.c:149
       __should_failslab+0x121/0x190 mm/failslab.c:32
       should_failslab+0x9/0x14 mm/slab_common.c:1557
       slab_pre_alloc_hook mm/slab.h:424 [inline]
       slab_alloc mm/slab.c:3383 [inline]
       __do_kmalloc mm/slab.c:3725 [inline]
       __kmalloc+0x71/0x750 mm/slab.c:3736
       kmalloc include/linux/slab.h:520 [inline]
       tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
       __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
       tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
       tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
       pty_write+0x133/0x200 drivers/tty/pty.c:121
       tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
       __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
       flush_echoes drivers/tty/n_tty.c:827 [inline]
       __receive_buf drivers/tty/n_tty.c:1646 [inline]
       n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
       n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
       tiocsti drivers/tty/tty_io.c:2192 [inline]
       tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
       vfs_ioctl fs/ioctl.c:46 [inline]
       file_ioctl fs/ioctl.c:501 [inline]
       do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
       ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
       __do_sys_ioctl fs/ioctl.c:712 [inline]
       __se_sys_ioctl fs/ioctl.c:710 [inline]
       __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
       do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

other info that might help us debug this:

Chain exists of:
  console_owner --> &port_lock_key --> &(&port->lock)->rlock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&(&port->lock)->rlock);
                               lock(&port_lock_key);
                               lock(&(&port->lock)->rlock);
  lock(console_owner);

 *** DEADLOCK ***

4 locks held by syz-executor157/7587:
 #0: 000000008b9fa4f5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:363
 #1: 00000000a1f57881 (&o_tty->termios_rwsem/1){++++}, at: n_tty_receive_buf_common+0x89/0x2900 drivers/tty/n_tty.c:1703
 #2: 00000000f4ef20cd (&ldata->output_lock){+.+.}, at: flush_echoes drivers/tty/n_tty.c:825 [inline]
 #2: 00000000f4ef20cd (&ldata->output_lock){+.+.}, at: __receive_buf drivers/tty/n_tty.c:1646 [inline]
 #2: 00000000f4ef20cd (&ldata->output_lock){+.+.}, at: n_tty_receive_buf_common+0xb99/0x2900 drivers/tty/n_tty.c:1740
 #3: 000000002394c496 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xff/0x200 drivers/tty/pty.c:119

stack backtrace:
CPU: 0 PID: 7587 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221
 check_prev_add kernel/locking/lockdep.c:1861 [inline]
 check_prevs_add kernel/locking/lockdep.c:1974 [inline]
 validate_chain kernel/locking/lockdep.c:2415 [inline]
 __lock_acquire+0x2e6d/0x48f0 kernel/locking/lockdep.c:3411
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903
 console_trylock_spinning kernel/printk/printk.c:1683 [inline]
 vprintk_emit+0x385/0x690 kernel/printk/printk.c:1926
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1968
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
 printk+0xba/0xed kernel/printk/printk.c:2001
 fail_dump lib/fault-inject.c:44 [inline]
 should_fail+0x6f1/0x85c lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7586 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7589 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7591 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7592 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7590 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7593 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7595 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7594 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7596 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7597 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7598 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7599 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7600 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7601 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7602 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7604 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7608 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7605 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7609 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7606 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7610 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7611 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7613 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7612 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7614 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7616 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7615 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7617 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7618 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7619 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7621 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7622 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441419
Code: e8 8c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc99556e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
RDX: 0000000020000040 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007ffc99556e40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7620 Comm: syz-executor157 Not tainted 4.19.34 #2
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 7623 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3078 [inline]
 prepare_alloc_pages mm/page_alloc.c:4336 [inline]
 __alloc_pages_nodemask+0x1ee/0x760 mm/page_alloc.c:4383
 alloc_pages_current+0x107/0x210 mm/mempolicy.c:2147
 alloc_pages include/linux/gfp.h:509 [inline]
 __get_free_pages+0xc/0x40 mm/page_alloc.c:4433
 tlb_next_batch mm/memory.c:204 [inline]
 __tlb_remove_page_size+0x2ee/0x510 mm/memory.c:306
 __tlb_remove_page include/asm-generic/tlb.h:161 [inline]
 zap_pte_range mm/memory.c:1341 [inline]
 zap_pmd_range mm/memory.c:1440 [inline]
 zap_pud_range mm/memory.c:1469 [inline]
 zap_p4d_range mm/memory.c:1490 [inline]
 unmap_page_range+0xeee/0x1e70 mm/memory.c:1511
 unmap_single_vma+0x19d/0x300 mm/memory.c:1556
 unmap_vmas+0xae/0x180 mm/memory.c:1586
 exit_mmap+0x2c2/0x530 mm/mmap.c:3092
 __mmput kernel/fork.c:1001 [inline]
 mmput+0x15f/0x4c0 kernel/fork.c:1022
 exit_mm kernel/exit.c:546 [inline]
 do_exit+0x838/0x2fa0 kernel/exit.c:863
 do_group_exit+0x135/0x370 kernel/exit.c:979
 __do_sys_exit_group kernel/exit.c:990 [inline]
 __se_sys_exit_group kernel/exit.c:988 [inline]
 __x64_sys_exit_group+0x44/0x50 kernel/exit.c:988
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440068
Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00
RSP: 002b:00007ffc99556de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440068
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004bfcd0 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 7624 Comm: syz-executor157 Not tainted 4.19.34 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x121/0x190 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x71/0x750 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1fb/0x5c0 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag+0x93/0x1f0 drivers/tty/tty_buffer.c:313
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0x133/0x200 drivers/tty/pty.c:121
 tty_put_char+0x137/0x160 drivers/tty/tty_io.c:2886
 __process_echoes+0x5c8/0xa40 drivers/tty/n_tty.c:726
 flush_echoes drivers/tty/n_tty.c:827 [inline]
 __receive_buf drivers/tty/n_tty.c:1646 [inline]
 n_tty_receive_buf_common+0xbd6/0x2900 drivers/tty/n_tty.c:1740
 n_tty_receive_buf+0x31/0x40 drivers/tty/n_tty.c:1769
 tiocsti drivers/tty/tty_io.c:2192 [inline]
 tty_ioctl+0xeb1/0x1530 drivers/tty/tty_io.c:2578
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:688

Crashes (172):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/11 21:46 linux-4.19.y 4d552acf3370 13030ef8 .config console log report syz C ci2-linux-4-19
2020/01/29 11:54 linux-4.19.y 88d6de67e390 c8e81ce4 .config console log report ci2-linux-4-19
2020/01/28 12:07 linux-4.19.y 88d6de67e390 56cd6c9b .config console log report ci2-linux-4-19
2020/01/26 23:23 linux-4.19.y d183c8e2647a dd56146d .config console log report ci2-linux-4-19
2020/01/21 01:23 linux-4.19.y dc4ba5be1bab 8eda0b95 .config console log report ci2-linux-4-19
2020/01/20 17:27 linux-4.19.y dc4ba5be1bab c40da18c .config console log report ci2-linux-4-19
2020/01/19 11:14 linux-4.19.y dc4ba5be1bab bc8bc756 .config console log report ci2-linux-4-19
2020/01/16 06:03 linux-4.19.y db5b9190ff82 f9b69507 .config console log report ci2-linux-4-19
2020/01/15 06:36 linux-4.19.y db5b9190ff82 fa12bd3c .config console log report ci2-linux-4-19
2020/01/13 22:03 linux-4.19.y dcd888983542 99565c1a .config console log report ci2-linux-4-19
2020/01/13 15:57 linux-4.19.y dcd888983542 99565c1a .config console log report ci2-linux-4-19
2020/01/13 10:24 linux-4.19.y dcd888983542 53faa9fe .config console log report ci2-linux-4-19
2020/01/12 11:16 linux-4.19.y cb1f9a169a0e 31290a45 .config console log report ci2-linux-4-19
2020/01/11 08:30 linux-4.19.y cb1f9a169a0e 4c04afaa .config console log report ci2-linux-4-19
2020/01/06 12:23 linux-4.19.y 3d40d7117e35 438e1227 .config console log report ci2-linux-4-19
2019/12/29 00:29 linux-4.19.y 672481c2deff af6b8ef8 .config console log report ci2-linux-4-19
2019/12/27 22:37 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/27 15:25 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/25 20:26 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/23 18:07 linux-4.19.y 672481c2deff be5c2c81 .config console log report ci2-linux-4-19
2019/12/19 03:59 linux-4.19.y 7d120bf21c05 79b211f7 .config console log report ci2-linux-4-19
2019/12/19 01:04 linux-4.19.y 7d120bf21c05 79b211f7 .config console log report ci2-linux-4-19
2019/12/15 17:56 linux-4.19.y 312017a460d5 eef6e580 .config console log report ci2-linux-4-19
2019/12/15 13:16 linux-4.19.y 312017a460d5 eef6e580 .config console log report ci2-linux-4-19
2019/12/15 08:35 linux-4.19.y 312017a460d5 eef6e580 .config console log report ci2-linux-4-19
2019/12/14 18:36 linux-4.19.y 312017a460d5 eef6e580 .config console log report ci2-linux-4-19
2019/12/14 10:19 linux-4.19.y 312017a460d5 eef6e580 .config console log report ci2-linux-4-19
2019/12/13 12:44 linux-4.19.y 312017a460d5 2a752b7c .config console log report ci2-linux-4-19
2019/12/12 19:48 linux-4.19.y fb683b5e3f53 08003f64 .config console log report ci2-linux-4-19
2019/12/09 13:03 linux-4.19.y fb683b5e3f53 1508f453 .config console log report ci2-linux-4-19
2019/12/08 14:19 linux-4.19.y fb683b5e3f53 1508f453 .config console log report ci2-linux-4-19
2019/12/07 04:36 linux-4.19.y fb683b5e3f53 85f26751 .config console log report ci2-linux-4-19
2019/12/04 20:40 linux-4.19.y 174651bdf802 b2088328 .config console log report ci2-linux-4-19
2019/12/02 02:53 linux-4.19.y 174651bdf802 f879db37 .config console log report ci2-linux-4-19
2019/12/02 01:09 linux-4.19.y 174651bdf802 f879db37 .config console log report ci2-linux-4-19
2019/11/30 11:16 linux-4.19.y 14260788bbb9 3a75be00 .config console log report ci2-linux-4-19
2019/11/30 04:04 linux-4.19.y 14260788bbb9 3a75be00 .config console log report ci2-linux-4-19
2019/11/29 22:52 linux-4.19.y 14260788bbb9 4f7e1d0f .config console log report ci2-linux-4-19
2019/11/27 23:17 linux-4.19.y 14260788bbb9 0d63f89c .config console log report ci2-linux-4-19
2019/11/27 12:46 linux-4.19.y 14260788bbb9 1048481f .config console log report ci2-linux-4-19
2019/11/21 02:08 linux-4.19.y c63ee2939dc1 8098ea0f .config console log report ci2-linux-4-19
2019/11/18 20:24 linux-4.19.y c555efaf1402 d5696d51 .config console log report ci2-linux-4-19
2019/11/13 07:55 linux-4.19.y 7d8dbefc22ff 048f2d49 .config console log report ci2-linux-4-19
* Struck through repros no longer work on HEAD.