RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6746 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 ====================================================== WARNING: possible circular locking dependency detected 4.17.0-rc3+ #1 Not tainted ------------------------------------------------------ syz-executor.3/6744 is trying to acquire lock: (ptrval) (console_owner){-...}, at: log_next kernel/printk/printk.c:492 [inline] (ptrval) (console_owner){-...}, at: console_unlock+0x390/0xe10 kernel/printk/printk.c:2382 but task is already holding lock: (ptrval) (&(&port->lock)->rlock){-.-.}, at: pty_write+0xbf/0x200 drivers/tty/pty.c:119 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&(&port->lock)->rlock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 tty_port_tty_get+0x1b/0x70 drivers/tty/tty_port.c:288 tty_port_default_wakeup+0xa/0x30 drivers/tty/tty_port.c:47 tty_port_tty_wakeup+0x53/0x70 drivers/tty/tty_port.c:390 uart_write_wakeup+0x37/0x50 drivers/tty/serial/serial_core.c:103 serial8250_tx_chars+0x3dc/0x9d0 drivers/tty/serial/8250/8250_port.c:1808 serial8250_handle_irq.part.25+0x151/0x1d0 drivers/tty/serial/8250/8250_port.c:1881 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1867 [inline] serial8250_default_handle_irq+0x7c/0xe0 drivers/tty/serial/8250/8250_port.c:1897 serial8250_interrupt+0xd3/0x170 drivers/tty/serial/8250/8250_core.c:125 __handle_irq_event_percpu+0xff/0x700 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+0x1d6/0x740 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x37/0x50 arch/x86/kernel/irq_64.c:77 do_IRQ+0x84/0x1a0 arch/x86/kernel/irq.c:245 ret_from_intr+0x0/0x1e native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0x4f/0x350 arch/x86/kernel/process.c:354 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:345 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x3f1/0x5a0 kernel/sched/idle.c:262 cpu_startup_entry+0xc8/0xe0 kernel/sched/idle.c:368 rest_init+0xdd/0xe0 init/main.c:441 start_kernel+0x70d/0x746 init/main.c:737 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:445 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:426 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242 -> #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+0x6b9/0x880 drivers/tty/serial/8250/8250_port.c:3230 univ8250_console_write+0x4e/0x70 drivers/tty/serial/8250/8250_core.c:590 call_console_drivers kernel/printk/printk.c:1718 [inline] console_unlock+0x8b2/0xe10 kernel/printk/printk.c:2395 vprintk_emit+0x2a3/0x7e0 kernel/printk/printk.c:1907 vprintk_default+0x1a/0x20 kernel/printk/printk.c:1947 vprintk_func+0x2c/0xf2 kernel/printk/printk_safe.c:379 printk+0x9a/0xc0 kernel/printk/printk.c:1980 register_console+0x5c7/0x970 kernel/printk/printk.c:2714 univ8250_console_init+0x1e/0x28 drivers/tty/serial/8250/8250_core.c:685 console_init+0x38d/0x552 kernel/printk/printk.c:2798 start_kernel+0x4b4/0x746 init/main.c:660 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:445 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:426 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242 -> #0 (console_owner){-...}: lock_acquire+0x173/0x400 kernel/locking/lockdep.c:3920 console_lock_spinning_enable kernel/printk/printk.c:1581 [inline] console_unlock+0x3f2/0xe10 kernel/printk/printk.c:2392 vprintk_emit+0x2a3/0x7e0 kernel/printk/printk.c:1907 vprintk_default+0x1a/0x20 kernel/printk/printk.c:1947 vprintk_func+0x2c/0xf2 kernel/printk/printk_safe.c:379 printk+0x9a/0xc0 kernel/printk/printk.c:1980 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x478/0x599 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 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.3/6744: #0: (ptrval) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (ptrval) (&tty->atomic_write_lock){+.+.}, at: tty_write_lock+0x19/0x50 drivers/tty/tty_io.c:884 #2: (ptrval) (&tty->termios_rwsem){++++}, at: n_tty_write+0x170/0x1030 drivers/tty/n_tty.c:2291 #3: (ptrval) (&ldata->output_lock){+.+.}, at: n_tty_write+0x89c/0x1030 drivers/tty/n_tty.c:2330 #4: (ptrval) (&(&port->lock)->rlock){-.-.}, at: pty_write+0xbf/0x200 drivers/tty/pty.c:119 #5: (ptrval) (console_lock){+.+.}, at: console_trylock_spinning kernel/printk/printk.c:1643 [inline] #5: (ptrval) (console_lock){+.+.}, at: vprintk_emit+0x296/0x7e0 kernel/printk/printk.c:1906 stack backtrace: CPU: 0 PID: 6744 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 print_circular_bug.isra.37.cold.55+0x1bd/0x27d kernel/locking/lockdep.c:1223 check_prev_add kernel/locking/lockdep.c:1863 [inline] check_prevs_add kernel/locking/lockdep.c:1976 [inline] validate_chain kernel/locking/lockdep.c:2417 [inline] __lock_acquire+0x30ca/0x4950 kernel/locking/lockdep.c:3431 lock_acquire+0x173/0x400 kernel/locking/lockdep.c:3920 console_lock_spinning_enable kernel/printk/printk.c:1581 [inline] console_unlock+0x3f2/0xe10 kernel/printk/printk.c:2392 vprintk_emit+0x2a3/0x7e0 kernel/printk/printk.c:1907 vprintk_default+0x1a/0x20 kernel/printk/printk.c:1947 vprintk_func+0x2c/0xf2 kernel/printk/printk_safe.c:379 printk+0x9a/0xc0 kernel/printk/printk.c:1980 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x478/0x599 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007ff4e32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32fbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3739fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3a3739fc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a373a06d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 kobject: 'loop3' ( (ptrval)): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop3' CPU: 0 PID: 6748 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007ff4e32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32fbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 8021q: adding VLAN 0 to HW filter on device batadv0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'vlan0' ( (ptrval)): kobject_add_internal: parent: 'mesh', set: '' CPU: 1 PID: 6750 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 kobject: 'loop1' ( (ptrval)): kobject_uevent_env ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3739fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3a3739fc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a373a06d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready CPU: 1 PID: 6758 Comm: syz-executor.2 Not tainted 4.17.0-rc3+ #1 IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready kmalloc include/linux/slab.h:517 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:170 [inline] __tty_buffer_request_room+0x1b3/0x550 drivers/tty/tty_buffer.c:268 8021q: adding VLAN 0 to HW filter on device batadv0 tty_insert_flip_string_fixed_flag+0x77/0x1a0 drivers/tty/tty_buffer.c:313 kobject: 'vlan0' ( (ptrval)): kobject_add_internal: parent: 'mesh', set: '' tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007fb1c46fcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb1c46fcc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1c46fd6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6760 Comm: syz-executor.4 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f4857159c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4857159c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f485715a6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop1' CPU: 1 PID: 6763 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 kobject: 'loop4' ( (ptrval)): kobject_uevent_env should_failslab+0x9/0x14 mm/slab_common.c:1522 kobject: 'loop4' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop4' slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3739fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3a3739fc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a373a06d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6765 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007ff4e32dac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32dac90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32db6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 8021q: adding VLAN 0 to HW filter on device batadv0 kobject: 'vlan0' ( (ptrval)): kobject_add_internal: parent: 'mesh', set: '' kobject: 'loop2' ( (ptrval)): kobject_uevent_env kobject: 'loop2' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' ( (ptrval)): kobject_uevent_env kobject: 'loop3' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop3' FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kobject: 'loop0' ( (ptrval)): kobject_uevent_env CPU: 0 PID: 6773 Comm: syz-executor.0 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 kobject: 'loop0' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop0' __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 kobject: 'loop5' ( (ptrval)): kobject_uevent_env __vfs_write+0xe3/0x860 fs/read_write.c:485 kobject: 'loop5' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f0fbf2d0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0fbf2d0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0fbf2d16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6782 Comm: syz-executor.5 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 kobject: 'loop1' ( (ptrval)): kobject_uevent_env __vfs_write+0xe3/0x860 fs/read_write.c:485 kobject: 'loop1' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop1' vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 kobject: 'loop2' ( (ptrval)): kobject_uevent_env __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f1a6aab0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1a6aab0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1a6aab16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 kobject: 'loop2' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kobject: 'loop3' ( (ptrval)): kobject_uevent_env CPU: 1 PID: 6790 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007ff4e32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32fbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6789 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3739fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3a3739fc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a373a06d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6791 Comm: syz-executor.2 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 kobject: 'loop3' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop3' should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kobject: 'loop0' ( (ptrval)): kobject_uevent_env kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 kobject: 'loop0' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop0' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007fb1c46fcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb1c46fcc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1c46fd6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6788 Comm: syz-executor.4 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f485717ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f485717ac90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f485717b6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6799 Comm: syz-executor.5 Not tainted 4.17.0-rc3+ #1 kobject: 'loop5' ( (ptrval)): kobject_uevent_env 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 kobject: 'loop5' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop5' should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f1a6aab0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1a6aab0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1a6aab16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6795 Comm: syz-executor.0 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f0fbf2d0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0fbf2d0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0fbf2d16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6802 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 kobject: 'loop3' ( (ptrval)): kobject_uevent_env 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+0x109/0x15a lib/dump_stack.c:113 kobject: 'loop3' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop3' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 kobject: 'loop4' ( (ptrval)): kobject_uevent_env kobject: 'loop4' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop4' do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 RSP: 002b:00007ff4e32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32fbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6807 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3737ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3a3737ec90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a3737f6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6810 Comm: syz-executor.4 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f485717ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f485717ac90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f485717b6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6811 Comm: syz-executor.2 Not tainted 4.17.0-rc3+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop0' ( (ptrval)): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 kobject: 'loop0' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' ( (ptrval)): kobject_uevent_env kobject: 'loop5' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop5' tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007fb1c46fcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb1c46fcc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1c46fd6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6815 Comm: syz-executor.0 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f0fbf2d0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0fbf2d0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0fbf2d16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kobject: 'loop3' ( (ptrval)): kobject_uevent_env CPU: 0 PID: 6816 Comm: syz-executor.5 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f1a6aab0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1a6aab0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1a6aab16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6820 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 kobject: 'loop3' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop3' 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kobject: 'loop1' ( (ptrval)): kobject_uevent_env kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 kobject: 'loop1' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop1' vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 RSP: 002b:00007ff4e32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32fbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6823 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3737ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3a3737ec90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a3737f6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6826 Comm: syz-executor.4 Not tainted 4.17.0-rc3+ #1 kobject: 'loop4' ( (ptrval)): kobject_uevent_env 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 kobject: 'loop4' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop4' should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kobject: 'loop2' ( (ptrval)): kobject_uevent_env kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 kobject: 'loop2' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop2' tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f485717ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f485717ac90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f485717b6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop5' ( (ptrval)): kobject_uevent_env CPU: 1 PID: 6830 Comm: syz-executor.5 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 kobject: 'loop5' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop5' __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f1a6aab0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1a6aab0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1a6aab16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6828 Comm: syz-executor.2 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 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:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007fb1c46fcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb1c46fcc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1c46fd6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6835 Comm: syz-executor.0 Not tainted 4.17.0-rc3+ #1 kobject: 'loop0' ( (ptrval)): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop0' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop0' Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 kobject: 'loop1' ( (ptrval)): kobject_uevent_env __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 kobject: 'loop1' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop1' tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 kobject: 'loop4' ( (ptrval)): kobject_uevent_env kobject: 'loop4' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop4' vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f0fbf2d0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0fbf2d0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0fbf2d16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6840 Comm: syz-executor.4 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f485717ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f485717ac90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f485717b6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6843 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007ff4e32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32fbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6845 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3737ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f3a3737ec90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a3737f6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6847 Comm: syz-executor.5 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kobject: 'loop3' ( (ptrval)): kobject_uevent_env kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 kobject: 'loop3' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop3' n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 kobject: 'loop5' ( (ptrval)): kobject_uevent_env do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 kobject: 'loop5' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop5' __vfs_write+0xe3/0x860 fs/read_write.c:485 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f1a6aab0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1a6aab0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1a6aab16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6855 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop2' ( (ptrval)): kobject_uevent_env Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 kobject: 'loop2' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop2' __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 kobject: 'loop0' ( (ptrval)): kobject_uevent_env __vfs_write+0xe3/0x860 fs/read_write.c:485 kobject: 'loop0' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop0' vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f3a3739fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 RAX: ffffffffffffffda RBX: 00007f3a3739fc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3a373a06d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6858 Comm: syz-executor.2 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007fb1c46dbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb1c46dbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1c46dc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6863 Comm: syz-executor.5 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f1a6aab0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1a6aab0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1a6aab16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6853 Comm: syz-executor.4 Not tainted 4.17.0-rc3+ #1 kobject: 'loop1' ( (ptrval)): kobject_uevent_env 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 kobject: 'loop1' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop1' should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 kobject: 'loop3' ( (ptrval)): kobject_uevent_env tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 kobject: 'loop3' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' ( (ptrval)): kobject_uevent_env do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 kobject: 'loop5' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop5' vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 kobject: 'loop0' ( (ptrval)): kobject_uevent_env __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 kobject: 'loop0' ( (ptrval)): fill_kobj_path: path = '/devices/virtual/block/loop0' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f485717ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f485717ac90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f485717b6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6861 Comm: syz-executor.3 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007ff4e32fbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4e32fbc90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff4e32fc6d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 0 PID: 6864 Comm: syz-executor.0 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 __should_failslab+0xba/0xf0 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x63/0x7a0 mm/slab.c:3727 kmalloc include/linux/slab.h:517 [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+0x77/0x1a0 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0xf3/0x200 drivers/tty/pty.c:121 n_tty_write+0x8d2/0x1030 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:958 [inline] tty_write+0x346/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485 vfs_write+0x150/0x4f0 fs/read_write.c:549 ksys_write+0xcd/0x1b0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x6e/0xb0 fs/read_write.c:607 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 RSP: 002b:00007f0fbf2d0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0fbf2d0c90 RCX: 00000000004592c9 RDX: 00000000ffffff78 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0fbf2d16d4 R13: 00000000004c9106 R14: 00000000004e0070 R15: 0000000000000004 CPU: 1 PID: 6872 Comm: syz-executor.1 Not tainted 4.17.0-rc3+ #1 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+0x109/0x15a lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0x5/0x14 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3082 [inline] prepare_alloc_pages mm/page_alloc.c:4322 [inline] __alloc_pages_nodemask+0x1b5/0x730 mm/page_alloc.c:4358 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1411 [inline] cache_grow_begin+0x81/0x890 mm/slab.c:2678 cache_alloc_refill mm/slab.c:3045 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x6d2/0x7a0 mm/slab.c:3727 kobject: 'loop3' ( (ptrval)): kobject_uevent_env kmalloc include/linux/slab.h:517 [inline] do_tty_write drivers/tty/tty_io.c:940 [inline] tty_write+0x52b/0x770 drivers/tty/tty_io.c:1042 __vfs_write+0xe3/0x860 fs/read_write.c:485