RDX: 0000000020000000 RSI: 00000000402c542b RDI: 0000000000000003 RBP: 00007fa5c117d1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc1634ad4f R14: 00007fa5c117d300 R15: 0000000000022000 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/5977 is trying to acquire lock: 000000001bdb533b (console_owner){-.-.}, at: log_next kernel/printk/printk.c:511 [inline] 000000001bdb533b (console_owner){-.-.}, at: console_unlock+0x3a9/0x1110 kernel/printk/printk.c:2447 but task is already holding lock: 0000000085e618c0 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xf4/0x1f0 drivers/tty/pty.c:120 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&(&port->lock)->rlock){-.-.}: tty_port_tty_get+0x1d/0x80 drivers/tty/tty_port.c:289 tty_port_default_wakeup+0x11/0x40 drivers/tty/tty_port.c:47 serial8250_tx_chars+0x490/0xaf0 drivers/tty/serial/8250/8250_port.c:1813 serial8250_handle_irq.part.0+0x31f/0x3d0 drivers/tty/serial/8250/8250_port.c:1900 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1873 [inline] serial8250_default_handle_irq+0xae/0x220 drivers/tty/serial/8250/8250_port.c:1916 serial8250_interrupt+0x101/0x240 drivers/tty/serial/8250/8250_core.c:125 __handle_irq_event_percpu+0x27e/0x8e0 kernel/irq/handle.c:149 handle_irq_event_percpu kernel/irq/handle.c:189 [inline] handle_irq_event+0x102/0x290 kernel/irq/handle.c:206 handle_edge_irq+0x260/0xcf0 kernel/irq/chip.c:800 generic_handle_irq_desc include/linux/irqdesc.h:155 [inline] handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87 do_IRQ+0x93/0x1c0 arch/x86/kernel/irq.c:246 ret_from_intr+0x0/0x1e arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline] uart_write+0x3bb/0x6f0 drivers/tty/serial/serial_core.c:612 do_output_char+0x5de/0x850 drivers/tty/n_tty.c:445 process_output drivers/tty/n_tty.c:512 [inline] n_tty_write+0x46e/0xff0 drivers/tty/n_tty.c:2343 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x496/0x810 drivers/tty/tty_io.c:1044 redirected_tty_write+0xaa/0xb0 drivers/tty/tty_io.c:1065 do_loop_readv_writev fs/read_write.c:704 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_write+0x461/0x5d0 fs/read_write.c:962 vfs_writev+0x153/0x2e0 fs/read_write.c:1005 do_writev+0x136/0x330 fs/read_write.c:1040 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&port_lock_key){-.-.}: serial8250_console_write+0x90e/0xb70 drivers/tty/serial/8250/8250_port.c:3290 call_console_drivers kernel/printk/printk.c:1764 [inline] console_unlock+0xbb6/0x1110 kernel/printk/printk.c:2460 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 register_console+0x87f/0xc90 kernel/printk/printk.c:2776 univ8250_console_init+0x3a/0x46 drivers/tty/serial/8250/8250_core.c:684 console_init+0x4cb/0x718 kernel/printk/printk.c:2862 start_kernel+0x686/0x911 init/main.c:659 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 -> #0 (console_owner){-.-.}: console_lock_spinning_enable kernel/printk/printk.c:1627 [inline] console_unlock+0x411/0x1110 kernel/printk/printk.c:2457 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x66b/0x7b0 lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x6d/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc+0x23f/0x2a0 drivers/tty/tty_buffer.c:170 __tty_buffer_request_room+0x156/0x2a0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x250 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x126/0x1f0 drivers/tty/pty.c:122 tty_put_char+0x122/0x150 drivers/tty/tty_io.c:2893 __process_echoes+0x15f/0x9f0 drivers/tty/n_tty.c:744 process_echoes+0xf9/0x1c0 drivers/tty/n_tty.c:809 n_tty_set_termios+0x718/0xe10 drivers/tty/n_tty.c:1868 tty_set_termios+0x5eb/0x830 drivers/tty/tty_ioctl.c:341 set_termios.part.0+0x2b1/0x4c0 drivers/tty/tty_ioctl.c:414 set_termios drivers/tty/tty_ioctl.c:368 [inline] tty_mode_ioctl+0x34c/0xb60 drivers/tty/tty_ioctl.c:772 n_tty_ioctl_helper+0x55/0x3a0 drivers/tty/tty_ioctl.c:940 n_tty_ioctl+0x56/0x360 drivers/tty/n_tty.c:2464 tty_ioctl+0x65d/0x1630 drivers/tty/tty_io.c:2678 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: console_owner --> &port_lock_key --> &(&port->lock)->rlock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&(&port->lock)->rlock); lock(&port_lock_key); lock(&(&port->lock)->rlock); lock(console_owner); *** DEADLOCK *** 6 locks held by syz-executor.4/5977: #0: 000000005906bef8 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000097bc77ed (&o_tty->termios_rwsem/1){++++}, at: tty_set_termios+0xec/0x830 drivers/tty/tty_ioctl.c:328 #2: 00000000cde86afe (&tty->ldisc_sem){++++}, at: tty_ldisc_ref+0x1d/0x80 drivers/tty/tty_ldisc.c:293 #3: 00000000ae0a10ab (&ldata->output_lock){+.+.}, at: process_echoes+0xaf/0x1c0 drivers/tty/n_tty.c:807 #4: 0000000085e618c0 (&(&port->lock)->rlock){-.-.}, at: pty_write+0xf4/0x1f0 drivers/tty/pty.c:120 #5: 00000000b4935fbd (console_lock){+.+.}, at: vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 stack backtrace: CPU: 1 PID: 5977 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 console_lock_spinning_enable kernel/printk/printk.c:1627 [inline] console_unlock+0x411/0x1110 kernel/printk/printk.c:2457 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x180 kernel/printk/printk_safe.c:405 printk+0xba/0xed kernel/printk/printk.c:2040 fail_dump lib/fault-inject.c:44 [inline] should_fail+0x66b/0x7b0 lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x6d/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] tty_buffer_alloc+0x23f/0x2a0 drivers/tty/tty_buffer.c:170 __tty_buffer_request_room+0x156/0x2a0 drivers/tty/tty_buffer.c:268 tty_insert_flip_string_fixed_flag+0x93/0x250 drivers/tty/tty_buffer.c:313 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x126/0x1f0 drivers/tty/pty.c:122 tty_put_char+0x122/0x150 drivers/tty/tty_io.c:2893 __process_echoes+0x15f/0x9f0 drivers/tty/n_tty.c:744 process_echoes+0xf9/0x1c0 drivers/tty/n_tty.c:809 n_tty_set_termios+0x718/0xe10 drivers/tty/n_tty.c:1868 tty_set_termios+0x5eb/0x830 drivers/tty/tty_ioctl.c:341 set_termios.part.0+0x2b1/0x4c0 drivers/tty/tty_ioctl.c:414 set_termios drivers/tty/tty_ioctl.c:368 [inline] tty_mode_ioctl+0x34c/0xb60 drivers/tty/tty_ioctl.c:772 n_tty_ioctl_helper+0x55/0x3a0 drivers/tty/tty_ioctl.c:940 n_tty_ioctl+0x56/0x360 drivers/tty/n_tty.c:2464 tty_ioctl+0x65d/0x1630 drivers/tty/tty_io.c:2678 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa5c2c0b0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa5c117d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa5c2d2af80 RCX: 00007fa5c2c0b0f9 RDX: 0000000020000000 RSI: 00000000402c542b RDI: 0000000000000003 RBP: 00007fa5c117d1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc1634ad4f R14: 00007fa5c117d300 R15: 0000000000022000 BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 5997 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 BTRFS info (device loop2): clearing free space tree __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x277/0x370 mm/slab.c:3557 BTRFS info (device loop2): clearing 1 ro feature flag __d_alloc+0x2b/0xa10 fs/dcache.c:1612 d_alloc_pseudo+0x19/0x70 fs/dcache.c:1743 alloc_file_pseudo+0xc6/0x250 fs/file_table.c:224 BTRFS info (device loop2): clearing 2 ro feature flag __shmem_file_setup.part.0+0x102/0x2b0 mm/shmem.c:3976 __shmem_file_setup mm/shmem.c:3959 [inline] shmem_file_setup+0x61/0x90 mm/shmem.c:4006 __do_sys_memfd_create mm/memfd.c:325 [inline] __se_sys_memfd_create+0x26b/0x440 mm/memfd.c:268 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4bd2a1f0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4bd0f90f38 EFLAGS: 00000202 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 00000000000050ef RCX: 00007f4bd2a1f0f9 RDX: 00007f4bd0f90fdc RSI: 0000000000000000 RDI: 00007f4bd2a79e81 RBP: 00000000000050ef R08: 00007f4bd0f90e20 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020005100 R13: 00007f4bd0f90fdc R14: 00007f4bd0f90fe0 R15: 000000002000a2c0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6033 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x277/0x370 mm/slab.c:3557 kmem_cache_zalloc include/linux/slab.h:699 [inline] __alloc_file+0x21/0x340 fs/file_table.c:100 alloc_empty_file+0x6d/0x170 fs/file_table.c:150 alloc_file+0x5e/0x4d0 fs/file_table.c:192 alloc_file_pseudo+0x165/0x250 fs/file_table.c:231 __shmem_file_setup.part.0+0x102/0x2b0 mm/shmem.c:3976 __shmem_file_setup mm/shmem.c:3959 [inline] shmem_file_setup+0x61/0x90 mm/shmem.c:4006 __do_sys_memfd_create mm/memfd.c:325 [inline] __se_sys_memfd_create+0x26b/0x440 mm/memfd.c:268 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4bd2a1f0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4bd0f90f38 EFLAGS: 00000202 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 00000000000050ef RCX: 00007f4bd2a1f0f9 RDX: 00007f4bd0f90fdc RSI: 0000000000000000 RDI: 00007f4bd2a79e81 RBP: 00000000000050ef R08: 00007f4bd0f90e20 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020005100 R13: 00007f4bd0f90fdc R14: 00007f4bd0f90fe0 R15: 000000002000a2c0 BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6057 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 BTRFS info (device loop2): disabling free space tree Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc_trace+0x284/0x380 mm/slab.c:3623 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] aa_alloc_file_ctx security/apparmor/include/file.h:60 [inline] apparmor_file_alloc_security+0x394/0xad0 security/apparmor/lsm.c:438 BTRFS info (device loop2): has skinny extents security_file_alloc+0x40/0x90 security/security.c:880 __alloc_file+0xd8/0x340 fs/file_table.c:105 alloc_empty_file+0x6d/0x170 fs/file_table.c:150 alloc_file+0x5e/0x4d0 fs/file_table.c:192 alloc_file_pseudo+0x165/0x250 fs/file_table.c:231 __shmem_file_setup.part.0+0x102/0x2b0 mm/shmem.c:3976 __shmem_file_setup mm/shmem.c:3959 [inline] shmem_file_setup+0x61/0x90 mm/shmem.c:4006 __do_sys_memfd_create mm/memfd.c:325 [inline] __se_sys_memfd_create+0x26b/0x440 mm/memfd.c:268 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4bd2a1f0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4bd0f90f38 EFLAGS: 00000202 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 00000000000050ef RCX: 00007f4bd2a1f0f9 RDX: 00007f4bd0f90fdc RSI: 0000000000000000 RDI: 00007f4bd2a79e81 RBP: 00000000000050ef R08: 00007f4bd0f90e20 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020005100 R13: 00007f4bd0f90fdc R14: 00007f4bd0f90fe0 R15: 000000002000a2c0 BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6111 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x277/0x370 mm/slab.c:3557 vm_area_alloc+0x1c/0x110 kernel/fork.c:321 mmap_region+0xa2a/0x16b0 mm/mmap.c:1727 do_mmap+0x8e8/0x1080 mm/mmap.c:1530 do_mmap_pgoff include/linux/mm.h:2329 [inline] vm_mmap_pgoff+0x197/0x200 mm/util.c:357 ksys_mmap_pgoff+0x45f/0x5a0 mm/mmap.c:1580 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4bd2a1f142 Code: 00 00 00 00 00 0f 1f 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 3b 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 5b 5d c3 0f 1f 00 48 c7 c0 b8 ff ff ff 64 RSP: 002b:00007f4bd0f90f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000022 RCX: 00007f4bd2a1f142 RDX: 0000000000000003 RSI: 0000000008400000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000000022 R11: 0000000000000246 R12: 00000000000050ed R13: 00007f4bd0f90fdc R14: 00007f4bd0f90fe0 R15: 000000002000a2c2 BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6191 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 alloc_pages_current+0x193/0x2a0 mm/mempolicy.c:2197 alloc_pages include/linux/gfp.h:532 [inline] pte_alloc_one+0x16/0x190 arch/x86/mm/pgtable.c:35 __pte_alloc+0x21/0x340 mm/memory.c:665 do_anonymous_page+0xff4/0x1be0 mm/memory.c:3282 handle_pte_fault mm/memory.c:4173 [inline] __handle_mm_fault+0x227a/0x41c0 mm/memory.c:4299 handle_mm_fault+0x436/0xb10 mm/memory.c:4336 __do_page_fault+0x68e/0xd60 arch/x86/mm/fault.c:1412 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7f4bd29bc1c7 Code: 78 48 63 d5 48 01 c2 49 3b 55 08 77 56 8d 55 ff 85 ed 74 35 0f 1f 80 00 00 00 00 48 39 c1 77 1c 49 8b 75 00 49 89 c1 49 29 c9 <46> 0f b6 0c 0e 45 84 c9 74 08 44 88 0c 06 49 8b 45 10 48 83 c0 01 RSP: 002b:00007f4bd0f90600 EFLAGS: 00010246 RAX: 0000000000000001 RBX: 00007f4bd0f90660 RCX: 0000000000000001 RDX: 0000000000000101 RSI: 00007f4bc8b71000 RDI: 00007f4bd0f90700 RBP: 0000000000000102 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 00007f4bd0f90670 R12: 00007f4bd0f90670 R13: 00007f4bd0f90700 R14: 0000000000000001 R15: 0000000000000000 syz-executor.0 invoked oom-killer: gfp_mask=0x0(), nodemask=(null), order=0, oom_score_adj=1000 syz-executor.0 cpuset=/ mems_allowed=0-1 CPU: 0 PID: 6191 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 BTRFS info (device loop2): enabling inode map caching Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 dump_header+0x15d/0xc3f mm/oom_kill.c:443 oom_kill_process.cold+0x10/0x692 mm/oom_kill.c:956 BTRFS info (device loop2): force clearing of disk cache out_of_memory mm/oom_kill.c:1114 [inline] out_of_memory+0x1072/0x1390 mm/oom_kill.c:1064 pagefault_out_of_memory+0x102/0x120 mm/oom_kill.c:1157 BTRFS info (device loop2): disabling free space tree mm_fault_error+0x106/0x390 arch/x86/mm/fault.c:1040 __do_page_fault+0xc34/0xd60 arch/x86/mm/fault.c:1440 BTRFS info (device loop2): has skinny extents page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0033:0x7f4bd29bc1c7 Code: 78 48 63 d5 48 01 c2 49 3b 55 08 77 56 8d 55 ff 85 ed 74 35 0f 1f 80 00 00 00 00 48 39 c1 77 1c 49 8b 75 00 49 89 c1 49 29 c9 <46> 0f b6 0c 0e 45 84 c9 74 08 44 88 0c 06 49 8b 45 10 48 83 c0 01 RSP: 002b:00007f4bd0f90600 EFLAGS: 00010246 RAX: 0000000000000001 RBX: 00007f4bd0f90660 RCX: 0000000000000001 RDX: 0000000000000101 RSI: 00007f4bc8b71000 RDI: 00007f4bd0f90700 RBP: 0000000000000102 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 00007f4bd0f90670 R12: 00007f4bd0f90670 R13: 00007f4bd0f90700 R14: 0000000000000001 R15: 0000000000000000 BTRFS info (device loop2): clearing free space tree Mem-Info: active_anon:301185 inactive_anon:18370 isolated_anon:0 active_file:3224 inactive_file:5500 isolated_file:0 unevictable:0 dirty:220 writeback:0 unstable:0 slab_reclaimable:23502 slab_unreclaimable:131865 mapped:36302 shmem:19899 pagetables:1110 bounce:0 free:1176835 free_pcp:632 free_cma:0 BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag Node 0 active_anon:1202940kB inactive_anon:73480kB active_file:12892kB inactive_file:21996kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:145308kB dirty:876kB writeback:0kB shmem:79596kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 237568kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 1 active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:4kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Node 0 DMA free:15908kB min:204kB low:252kB high:300kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2693 2695 2695 2695 Node 0 DMA32 free:666132kB min:35996kB low:44992kB high:53988kB active_anon:1205216kB inactive_anon:57480kB active_file:12892kB inactive_file:21796kB unevictable:0kB writepending:876kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:8128kB pagetables:4736kB bounce:0kB free_pcp:2036kB local_pcp:1216kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:4039880kB min:53876kB low:67344kB high:80812kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:4kB unevictable:0kB writepending:4kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB BTRFS info (device loop2): enabling inode map caching Node 0 DMA32: 1374*4kB (UE) 3133*8kB (UME) 1570*16kB (UME) 643*32kB (UME) 329*64kB (UME) 94*128kB (UME) 54*256kB (UM) 25*512kB (UME) 7*1024kB (M) 3*2048kB (ME) 123*4096kB (UM) = 653088kB BTRFS info (device loop2): force clearing of disk cache Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents Node 1 Normal: 98*4kB (UE) 402*8kB (UM) 289*16kB (UME) 79*32kB (UM) 29*64kB (UM) 15*128kB (UME) 14*256kB (UME) 5*512kB (UM) 3*1024kB (UM) 1*2048kB (U) 980*4096kB (M) = 4039880kB BTRFS info (device loop2): clearing free space tree Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB BTRFS info (device loop2): clearing 1 ro feature flag Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB BTRFS info (device loop2): clearing 2 ro feature flag Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 28531 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly 369649 pages reserved 0 pages cma reserved Out of memory (oom_kill_allocating_task): Kill process 6191 (syz-executor.0) score 0 or sacrifice child Killed process 6179 (syz-executor.0) total-vm:195848kB, anon-rss:2528kB, file-rss:14336kB, shmem-rss:0kB oom_reaper: reaped process 6179 (syz-executor.0), now anon-rss:0kB, file-rss:14336kB, shmem-rss:4kB BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag BTRFS info (device loop2): enabling inode map caching BTRFS info (device loop2): force clearing of disk cache BTRFS info (device loop2): disabling free space tree BTRFS info (device loop2): has skinny extents BTRFS info (device loop2): clearing free space tree BTRFS info (device loop2): clearing 1 ro feature flag BTRFS info (device loop2): clearing 2 ro feature flag