bisecting fixing commit since 32ee7492f104d82b01a44fc4b4ae17d5d2bb237b
building syzkaller on 2274ad39c8bee8efda31dc31ec8933d5624e8fe4
testing commit 32ee7492f104d82b01a44fc4b4ae17d5d2bb237b
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 01e71e98477381ea5852691f92131590d7ac86a87eff9a7c1d6f365189ea6af4
run #0: crashed: possible deadlock in console_unlock
run #1: crashed: possible deadlock in console_unlock
run #2: crashed: possible deadlock in pty_write
run #3: crashed: possible deadlock in console_unlock
run #4: crashed: possible deadlock in console_unlock
run #5: crashed: possible deadlock in pty_write
run #6: crashed: possible deadlock in console_unlock
run #7: crashed: possible deadlock in pty_write
run #8: crashed: possible deadlock in console_unlock
run #9: crashed: possible deadlock in console_unlock
run #10: crashed: possible deadlock in console_unlock
run #11: crashed: possible deadlock in console_unlock
run #12: crashed: possible deadlock in console_unlock
run #13: crashed: possible deadlock in pty_write
run #14: crashed: possible deadlock in pty_write
run #15: crashed: possible deadlock in console_unlock
run #16: crashed: possible deadlock in pty_write
run #17: crashed: possible deadlock in console_unlock
run #18: crashed: possible deadlock in console_unlock
run #19: crashed: possible deadlock in console_unlock
testing current HEAD e34184f53363f6bb873c2fe0ce1a08ed7d16e94a
testing commit e34184f53363f6bb873c2fe0ce1a08ed7d16e94a
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: ae11dfb4132d749cfe9368e1dbd9f9d276ab1f1e3c2d44960db517ff8d1b3b2a
run #0: crashed: possible deadlock in pty_write
run #1: crashed: possible deadlock in console_unlock
run #2: crashed: possible deadlock in console_unlock
run #3: crashed: possible deadlock in pty_write
run #4: crashed: possible deadlock in console_unlock
run #5: crashed: possible deadlock in console_unlock
run #6: crashed: possible deadlock in pty_write
run #7: crashed: possible deadlock in pty_write
run #8: crashed: possible deadlock in pty_write
run #9: crashed: possible deadlock in console_unlock
revisions tested: 2, total time: 28m26.115100664s (build: 20m40.16452703s, test: 6m34.839604404s)
the crash still happens on HEAD
commit msg: Linux 4.19.210
crash: possible deadlock in console_unlock
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
======================================================
WARNING: possible circular locking dependency detected
4.19.210-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.3/7108 is trying to acquire lock:
000000009c48111a (console_owner){-...}, at: log_next kernel/printk/printk.c:507 [inline]
000000009c48111a (console_owner){-...}, at: console_unlock+0x386/0xde0 kernel/printk/printk.c:2447

but task is already holding lock:
00000000db592d2c (&(&port->lock)->rlock){-.-.}, at: pty_write+0xbf/0x1f0 drivers/tty/pty.c:120

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+0x99/0xd0 kernel/locking/spinlock.c:152
       tty_port_tty_get+0x1d/0x80 drivers/tty/tty_port.c:289
       tty_port_default_wakeup+0xa/0x30 drivers/tty/tty_port.c:47
       tty_port_tty_wakeup+0x53/0x70 drivers/tty/tty_port.c:391
       uart_write_wakeup+0x37/0x50 drivers/tty/serial/serial_core.c:103
       serial8250_tx_chars+0x3dc/0xb50 drivers/tty/serial/8250/8250_port.c:1813
       serial8250_handle_irq.part.23+0x223/0x2e0 drivers/tty/serial/8250/8250_port.c:1900
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1873 [inline]
       serial8250_default_handle_irq+0x7c/0xe0 drivers/tty/serial/8250/8250_port.c:1916
       serial8250_interrupt+0xd3/0x170 drivers/tty/serial/8250/8250_core.c:125
       __handle_irq_event_percpu+0x100/0x660 kernel/irq/handle.c:149
       handle_irq_event_percpu+0x6c/0x140 kernel/irq/handle.c:189
       handle_irq_event+0xa2/0x130 kernel/irq/handle.c:206
       handle_edge_irq+0x206/0x780 kernel/irq/chip.c:800
       generic_handle_irq_desc include/linux/irqdesc.h:155 [inline]
       handle_irq+0x37/0x50 arch/x86/kernel/irq_64.c:87
       do_IRQ+0x98/0x1c0 arch/x86/kernel/irq.c:246
       ret_from_intr+0x0/0x1e
       arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
       _raw_spin_unlock_irqrestore+0xaf/0xd0 kernel/locking/spinlock.c:184
       spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
       uart_write+0x37a/0x6a0 drivers/tty/serial/serial_core.c:612
       do_output_char+0x4e8/0x700 drivers/tty/n_tty.c:445
       process_output drivers/tty/n_tty.c:512 [inline]
       n_tty_write+0x531/0x1060 drivers/tty/n_tty.c:2343
       do_tty_write drivers/tty/tty_io.c:960 [inline]
       tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
       redirected_tty_write+0xa5/0xc0 drivers/tty/tty_io.c:1065
       do_loop_readv_writev fs/read_write.c:704 [inline]
       do_loop_readv_writev fs/read_write.c:688 [inline]
       do_iter_write fs/read_write.c:962 [inline]
       do_iter_write+0x360/0x510 fs/read_write.c:941
       vfs_writev+0x16f/0x2d0 fs/read_write.c:1005
       do_writev+0x110/0x330 fs/read_write.c:1040
       __do_sys_writev fs/read_write.c:1113 [inline]
       __se_sys_writev fs/read_write.c:1110 [inline]
       __x64_sys_writev+0x70/0xb0 fs/read_write.c:1110
       do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
       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+0x99/0xd0 kernel/locking/spinlock.c:152
       serial8250_console_write+0x680/0x830 drivers/tty/serial/8250/8250_port.c:3290
       univ8250_console_write+0x4e/0x70 drivers/tty/serial/8250/8250_core.c:589
       call_console_drivers kernel/printk/printk.c:1764 [inline]
       console_unlock+0x8b9/0xde0 kernel/printk/printk.c:2460
       vprintk_emit+0x191/0x540 kernel/printk/printk.c:1965
       vprintk_default+0x1a/0x20 kernel/printk/printk.c:2007
       vprintk_func+0x49/0x130 kernel/printk/printk_safe.c:405
       printk+0x9a/0xc0 kernel/printk/printk.c:2040
       register_console+0x612/0xa10 kernel/printk/printk.c:2776
       univ8250_console_init+0x1e/0x28 drivers/tty/serial/8250/8250_core.c:684
       console_init+0x317/0x481 kernel/printk/printk.c:2862
       start_kernel+0x4b3/0x5c7 init/main.c:659
       x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490
       x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:471
       secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243

-> #0 (console_owner){-...}:
       lock_acquire+0x173/0x3d0 kernel/locking/lockdep.c:3908
       console_lock_spinning_enable kernel/printk/printk.c:1627 [inline]
       console_unlock+0x3e8/0xde0 kernel/printk/printk.c:2457
       vprintk_emit+0x191/0x540 kernel/printk/printk.c:1965
       vprintk_default+0x1a/0x20 kernel/printk/printk.c:2007
       vprintk_func+0x49/0x130 kernel/printk/printk_safe.c:405
       printk+0x9a/0xc0 kernel/printk/printk.c:2040
       fail_dump lib/fault-inject.c:44 [inline]
       should_fail+0x551/0x690 lib/fault-inject.c:149
       should_fail_alloc_page mm/page_alloc.c:3088 [inline]
       prepare_alloc_pages mm/page_alloc.c:4346 [inline]
       __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
       __alloc_pages include/linux/gfp.h:496 [inline]
       __alloc_pages_node include/linux/gfp.h:509 [inline]
       kmem_getpages mm/slab.c:1412 [inline]
       cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
       cache_alloc_refill mm/slab.c:3049 [inline]
       ____cache_alloc mm/slab.c:3132 [inline]
       ____cache_alloc mm/slab.c:3115 [inline]
       __do_cache_alloc mm/slab.c:3354 [inline]
       slab_alloc mm/slab.c:3389 [inline]
       __do_kmalloc mm/slab.c:3725 [inline]
       __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
       tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
       tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
       tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
       pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
       process_output_block drivers/tty/n_tty.c:593 [inline]
       n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
       do_tty_write drivers/tty/tty_io.c:960 [inline]
       tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
       __vfs_write+0xe3/0x890 fs/read_write.c:485
       vfs_write+0x150/0x4d0 fs/read_write.c:549
       ksys_write+0x103/0x260 fs/read_write.c:599
       __do_sys_write fs/read_write.c:611 [inline]
       __se_sys_write fs/read_write.c:608 [inline]
       __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
       do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
       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 ***

6 locks held by syz-executor.3/7108:
 #0: 00000000c2ee3015 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:362
 #1: 00000000e83f255d (&tty->atomic_write_lock){+.+.}, at: tty_write_lock+0x19/0x50 drivers/tty/tty_io.c:886
 #2: 00000000ebd6aca2 (&o_tty->termios_rwsem/1){++++}, at: n_tty_write+0x170/0x1060 drivers/tty/n_tty.c:2314
 #3: 00000000017b5f15 (&ldata->output_lock){+.+.}, at: process_output_block drivers/tty/n_tty.c:548 [inline]
 #3: 00000000017b5f15 (&ldata->output_lock){+.+.}, at: n_tty_write+0x30a/0x1060 drivers/tty/n_tty.c:2331
 #4: 00000000db592d2c (&(&port->lock)->rlock){-.-.}, at: pty_write+0xbf/0x1f0 drivers/tty/pty.c:120
 #5: 00000000e7cc9945 (console_lock){+.+.}, at: console_trylock_spinning kernel/printk/printk.c:1689 [inline]
 #5: 00000000e7cc9945 (console_lock){+.+.}, at: vprintk_emit+0x184/0x540 kernel/printk/printk.c:1964

stack backtrace:
CPU: 0 PID: 7108 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 print_circular_bug.isra.34.cold.55+0x1bd/0x27d kernel/locking/lockdep.c:1222
 check_prev_add kernel/locking/lockdep.c:1866 [inline]
 check_prevs_add kernel/locking/lockdep.c:1979 [inline]
 validate_chain kernel/locking/lockdep.c:2420 [inline]
 __lock_acquire+0x30bb/0x4950 kernel/locking/lockdep.c:3416
 lock_acquire+0x173/0x3d0 kernel/locking/lockdep.c:3908
 console_lock_spinning_enable kernel/printk/printk.c:1627 [inline]
 console_unlock+0x3e8/0xde0 kernel/printk/printk.c:2457
 vprintk_emit+0x191/0x540 kernel/printk/printk.c:1965
 vprintk_default+0x1a/0x20 kernel/printk/printk.c:2007
 vprintk_func+0x49/0x130 kernel/printk/printk_safe.c:405
 printk+0x9a/0xc0 kernel/printk/printk.c:2040
 fail_dump lib/fault-inject.c:44 [inline]
 should_fail+0x551/0x690 lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 7113 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
CPU: 0 PID: 7117 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
batman_adv: batadv0: Interface activated: batadv_slave_0
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
RIP: 0033:0x462cd9
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7121 Comm: syz-executor.0 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 should_failslab+0x9/0x20 mm/slab_common.c:1590
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05cd084198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f05cd0846bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7129 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #0
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 mm/slab.c:3736
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
batman_adv: batadv0: Interface activated: batadv_slave_1
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7131 Comm: syz-executor.2 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 mm/slab.c:3736
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f680fb7d198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bfa8
R13: 00007f680fb7d6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7137 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
Call Trace:
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 mm/slab.c:3736
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7141 Comm: syz-executor.0 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 mm/slab.c:3736
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
batman_adv: batadv0: Interface activated: batadv_slave_1
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05cd063198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bfa8
R13: 00007f05cd0636bc R14: 0000000000000005 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
CPU: 1 PID: 7145 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 __should_failslab+0xba/0xf0 mm/failslab.c:32
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
CPU: 1 PID: 7149 Comm: syz-executor.2 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
batman_adv: batadv0: Interface activated: batadv_slave_0
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f680fb9e198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f680fb9e6bc R14: 0000000000000005 R15: 0000000000000001
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 7152 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 7197 Comm: syz-executor.4 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f192462a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f192462a6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7200 Comm: syz-executor.1 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa6a4e4b198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007fa6a4e4b6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7204 Comm: syz-executor.5 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc835f23198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007fc835f236bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7206 Comm: syz-executor.4 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 mm/slab.c:3736
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f192462a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f192462a6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7218 Comm: syz-executor.2 Not tainted 4.19.210-syzkaller #0
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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f680fb9e198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f680fb9e6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7220 Comm: syz-executor.5 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc835f23198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007fc835f236bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7223 Comm: syz-executor.0 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05cd084198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f05cd0846bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7216 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7229 Comm: syz-executor.4 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f192462a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f192462a6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7217 Comm: syz-executor.1 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
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.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa6a4e4b198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007fa6a4e4b6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7236 Comm: syz-executor.2 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f680fb9e198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f680fb9e6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7240 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #0
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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7243 Comm: syz-executor.0 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05cd084198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f05cd0846bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7244 Comm: syz-executor.4 Not tainted 4.19.210-syzkaller #0
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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f192462a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f192462a6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7248 Comm: syz-executor.1 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa6a4e4b198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007fa6a4e4b6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7251 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #0
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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7254 Comm: syz-executor.2 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 mm/slab.c:3736
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f680fb9e198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f680fb9e6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7227 Comm: syz-executor.5 Not tainted 4.19.210-syzkaller #0
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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc835f23198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007fc835f236bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7260 Comm: syz-executor.4 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 __should_failslab+0xba/0xf0 mm/failslab.c:32
 should_failslab+0x9/0x20 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x70/0x770 mm/slab.c:3736
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f192462a198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f192462a6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 0 PID: 7261 Comm: syz-executor.3 Not tainted 4.19.210-syzkaller #0
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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 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+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2256c6f198 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000c16 RCX: 0000000000462cd9
RDX: 00000000fffffedf RSI: 0000000020000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000052bf00
R13: 00007f2256c6f6bc R14: 0000000000000005 R15: 0000000000000001
CPU: 1 PID: 7266 Comm: syz-executor.0 Not tainted 4.19.210-syzkaller #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+0x123/0x171 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0x5/0xa lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3088 [inline]
 prepare_alloc_pages mm/page_alloc.c:4346 [inline]
 __alloc_pages_nodemask+0x1d5/0x710 mm/page_alloc.c:4393
 __alloc_pages include/linux/gfp.h:496 [inline]
 __alloc_pages_node include/linux/gfp.h:509 [inline]
 kmem_getpages mm/slab.c:1412 [inline]
 cache_grow_begin+0x91/0x8d0 mm/slab.c:2682
 cache_alloc_refill mm/slab.c:3049 [inline]
 ____cache_alloc mm/slab.c:3132 [inline]
 ____cache_alloc mm/slab.c:3115 [inline]
 __do_cache_alloc mm/slab.c:3354 [inline]
 slab_alloc mm/slab.c:3389 [inline]
 __do_kmalloc mm/slab.c:3725 [inline]
 __kmalloc+0x6a1/0x770 mm/slab.c:3736
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 kmalloc include/linux/slab.h:520 [inline]
 tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline]
 __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268
 tty_insert_flip_string_fixed_flag drivers/tty/tty_buffer.c:313 [inline]
 tty_insert_flip_string_fixed_flag+0x78/0x200 drivers/tty/tty_buffer.c:306
 tty_insert_flip_string include/linux/tty_flip.h:37 [inline]
 pty_write+0xf3/0x1f0 drivers/tty/pty.c:122
 process_output_block drivers/tty/n_tty.c:593 [inline]
 n_tty_write+0x4a4/0x1060 drivers/tty/n_tty.c:2331
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x346/0x770 drivers/tty/tty_io.c:1044
 __vfs_write+0xe3/0x890 fs/read_write.c:485
 vfs_write+0x150/0x4d0 fs/read_write.c:549
 ksys_write+0x103/0x260 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:608
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462cd9
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
   9:	00 00 00
   c:	0f 1f 40 00          	nopl   0x0(%rax)
  10:	48 89 f8             	mov    %rdi,%rax
  13:	48 89 f7             	mov    %rsi,%rdi
  16:	48 89 d6             	mov    %rdx,%rsi
  19:	48 89 ca             	mov    %rcx,%rdx
  1c:	4d 89 c2             	mov    %r8,%r10
  1f:	4d 89 c8             	mov    %r9,%r8
  22:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  27:	0f 05                	syscall
* 29:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  2f:	73 01                	jae    0x32
  31:	c3                   	retq
  32:	48 c7 c1 bc ff ff ff 	mov    $0xffffffffffffffbc,%rcx
  39:	f7 d8                	neg    %eax
  3b:	64 89 01             	mov    %eax,%fs:(%rcx)
  3e:	48                   	rex.W