RBP: 00007ffebfab3820 R08: 0000000000000001 R09: 0000000000000033 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 00007ffebfab3870 R15: 0000000000000000 ====================================================== WARNING: possible circular locking dependency detected 4.14.302-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor148/8035 is trying to acquire lock: (console_owner){....}, at: [] log_next kernel/printk/printk.c:495 [inline] (console_owner){....}, at: [] console_unlock+0x307/0xf20 kernel/printk/printk.c:2396 but task is already holding lock: (&(&port->lock)->rlock){-.-.}, at: [] tty_insert_flip_string_and_push_buffer+0x2b/0x160 drivers/tty/tty_buffer.c:569 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+0x8c/0xc0 kernel/locking/spinlock.c:160 tty_port_tty_get+0x1d/0x80 drivers/tty/tty_port.c:288 tty_port_default_wakeup+0x11/0x40 drivers/tty/tty_port.c:46 serial8250_tx_chars+0x3fe/0xc70 drivers/tty/serial/8250/8250_port.c:1828 serial8250_handle_irq.part.0+0x2c7/0x390 drivers/tty/serial/8250/8250_port.c:1918 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1891 [inline] serial8250_default_handle_irq+0x8a/0x1f0 drivers/tty/serial/8250/8250_port.c:1934 serial8250_interrupt+0xf3/0x210 drivers/tty/serial/8250/8250_core.c:129 __handle_irq_event_percpu+0xee/0x7f0 kernel/irq/handle.c:147 handle_irq_event_percpu kernel/irq/handle.c:187 [inline] handle_irq_event+0xed/0x240 kernel/irq/handle.c:204 handle_edge_irq+0x224/0xc40 kernel/irq/chip.c:770 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87 do_IRQ+0x93/0x1d0 arch/x86/kernel/irq.c:230 ret_from_intr+0x0/0x1e arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192 spin_unlock_irqrestore include/linux/spinlock.h:372 [inline] uart_write+0x2dd/0x560 drivers/tty/serial/serial_core.c:632 do_output_char+0x4f5/0x750 drivers/tty/n_tty.c:447 process_output drivers/tty/n_tty.c:514 [inline] n_tty_write+0x3e3/0xda0 drivers/tty/n_tty.c:2345 do_tty_write drivers/tty/tty_io.c:959 [inline] tty_write+0x410/0x740 drivers/tty/tty_io.c:1043 redirected_tty_write+0x9c/0xb0 drivers/tty/tty_io.c:1064 do_loop_readv_writev fs/read_write.c:698 [inline] do_loop_readv_writev fs/read_write.c:682 [inline] do_iter_write+0x3da/0x550 fs/read_write.c:956 vfs_writev+0x125/0x290 fs/read_write.c:999 do_writev+0xfc/0x2c0 fs/read_write.c:1034 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #1 (&port_lock_key){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160 serial8250_console_write+0x8cb/0xb40 drivers/tty/serial/8250/8250_port.c:3281 call_console_drivers kernel/printk/printk.c:1727 [inline] console_unlock+0x99d/0xf20 kernel/printk/printk.c:2409 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1925 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409 printk+0x9e/0xbc kernel/printk/printk.c:1998 register_console+0x6f4/0xad0 kernel/printk/printk.c:2728 univ8250_console_init+0x2f/0x3a drivers/tty/serial/8250/8250_core.c:691 console_init+0x46/0x53 kernel/printk/printk.c:2809 start_kernel+0x521/0x763 init/main.c:638 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 -> #0 (console_owner){....}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 console_lock_spinning_enable kernel/printk/printk.c:1590 [inline] console_unlock+0x36f/0xf20 kernel/printk/printk.c:2406 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1925 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409 printk+0x9e/0xbc kernel/printk/printk.c:1998 fail_dump lib/fault-inject.c:44 [inline] should_fail.cold+0xdf/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] kmem_getpages mm/slab.c:1419 [inline] cache_grow_begin+0x91/0x700 mm/slab.c:2676 cache_alloc_refill+0x273/0x350 mm/slab.c:3043 ____cache_alloc mm/slab.c:3125 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x378/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:36 [inline] tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570 pty_write+0xc3/0xf0 drivers/tty/pty.c:118 n_tty_write+0x85e/0xda0 drivers/tty/n_tty.c:2356 do_tty_write drivers/tty/tty_io.c:959 [inline] tty_write+0x410/0x740 drivers/tty/tty_io.c:1043 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 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-executor148/8035: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&tty->atomic_write_lock){+.+.}, at: [] tty_write_lock drivers/tty/tty_io.c:885 [inline] #1: (&tty->atomic_write_lock){+.+.}, at: [] do_tty_write drivers/tty/tty_io.c:908 [inline] #1: (&tty->atomic_write_lock){+.+.}, at: [] tty_write+0x22d/0x740 drivers/tty/tty_io.c:1043 #2: (&tty->termios_rwsem){++++}, at: [] n_tty_write+0x18a/0xda0 drivers/tty/n_tty.c:2316 #3: (&ldata->output_lock){+.+.}, at: [] n_tty_write+0x82b/0xda0 drivers/tty/n_tty.c:2355 #4: (&(&port->lock)->rlock){-.-.}, at: [] tty_insert_flip_string_and_push_buffer+0x2b/0x160 drivers/tty/tty_buffer.c:569 #5: (console_lock){+.+.}, at: [] vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409 stack backtrace: CPU: 0 PID: 8035 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 console_lock_spinning_enable kernel/printk/printk.c:1590 [inline] console_unlock+0x36f/0xf20 kernel/printk/printk.c:2406 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1925 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409 printk+0x9e/0xbc kernel/printk/printk.c:1998 fail_dump lib/fault-inject.c:44 [inline] should_fail.cold+0xdf/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] kmem_getpages mm/slab.c:1419 [inline] cache_grow_begin+0x91/0x700 mm/slab.c:2676 cache_alloc_refill+0x273/0x350 mm/slab.c:3043 ____cache_alloc mm/slab.c:3125 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x378/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:36 [inline] tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570 pty_write+0xc3/0xf0 drivers/tty/pty.c:118 n_tty_write+0x85e/0xda0 drivers/tty/n_tty.c:2356 do_tty_write drivers/tty/tty_io.c:959 [inline] tty_write+0x410/0x740 drivers/tty/tty_io.c:1043 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fcdec68c429 RSP: 002b:00007ffebfab3818 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000a370 RCX: 00007fcdec68c429 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007ffebfab3820 R08: 0000000000000001 R09: 0000000000000033 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 00007ffebfab3870 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8036 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8037 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8038 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8039 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8040 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8041 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8042 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8043 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8044 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] kmem_getpages mm/slab.c:1419 [inline] cache_grow_begin+0x91/0x700 mm/slab.c:2676 cache_alloc_refill+0x273/0x350 mm/slab.c:3043 ____cache_alloc mm/slab.c:3125 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x378/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:36 [inline] tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570 pty_write+0xc3/0xf0 drivers/tty/pty.c:118 n_tty_write+0x85e/0xda0 drivers/tty/n_tty.c:2356 do_tty_write drivers/tty/tty_io.c:959 [inline] tty_write+0x410/0x740 drivers/tty/tty_io.c:1043 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fcdec68c429 RSP: 002b:00007ffebfab3818 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000acf5 RCX: 00007fcdec68c429 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007ffebfab3820 R08: 0000000000000001 R09: 0000000000000033 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 00007ffebfab3870 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8045 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 8046 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x6d/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:36 [inline] tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570 pty_write+0xc3/0xf0 drivers/tty/pty.c:118 n_tty_write+0x85e/0xda0 drivers/tty/n_tty.c:2356 do_tty_write drivers/tty/tty_io.c:959 [inline] tty_write+0x410/0x740 drivers/tty/tty_io.c:1043 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fcdec68c429 RSP: 002b:00007ffebfab3818 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000aeba RCX: 00007fcdec68c429 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007ffebfab3820 R08: 0000000000000001 R09: 0000000000000033 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 00007ffebfab3870 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8047 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 pagefault_out_of_memory: 13 callbacks suppressed Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8048 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8049 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8050 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8051 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8052 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2898 [inline] prepare_alloc_pages mm/page_alloc.c:4165 [inline] __alloc_pages_nodemask+0x21e/0x2900 mm/page_alloc.c:4213 alloc_pages_vma+0xd2/0x6d0 mm/mempolicy.c:2071 wp_page_copy+0x1f5/0x25c0 mm/memory.c:2606 do_wp_page+0x245/0x1db0 mm/memory.c:2900 handle_pte_fault mm/memory.c:4126 [inline] __handle_mm_fault+0x234f/0x4620 mm/memory.c:4234 handle_mm_fault+0x455/0x9c0 mm/memory.c:4271 __do_page_fault+0x549/0xad0 arch/x86/mm/fault.c:1442 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1126 RIP: 0001:0x7ffebfab3870 RSP: ec6fd140:0000000000000000 EFLAGS: 00000000 Huh VM_FAULT_OOM leaked out to the #PF handler. Retrying PF FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 8053 Comm: syz-executor148 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x149 lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x6d/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] tty_buffer_alloc+0xc0/0x270 drivers/tty/tty_buffer.c:169 __tty_buffer_request_room+0x12c/0x290 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x8b/0x210 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:36 [inline] tty_insert_flip_string_and_push_buffer+0x3e/0x160 drivers/tty/tty_buffer.c:570 pty_write+0xc3/0xf0 drivers/tty/pty.c:118 n_tty_write+0x85e/0xda0 drivers/tty/n_tty.c:2356 do_tty_write drivers/tty/tty_io.c:959 [inline] tty_write+0x410/0x740 drivers/tty/tty_io.c:1043 __vfs_write+0xe4/0x630 fs/read_write.c:480 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fcdec68c429 RSP: 002b:00007ffebfab3818 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000c687 RCX: 00007fcdec68c429 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007ffebfab3820 R08: 0000000000000001 R09: 0000000000000033 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 00007ffebfab3870 R15: 0000000000000000