RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 ====================================================== WARNING: possible circular locking dependency detected 4.14.218-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/6610 is trying to acquire lock: (console_owner){-.-.}, at: [] console_trylock_spinning kernel/printk/printk.c:1658 [inline] (console_owner){-.-.}, at: [] vprintk_emit+0x32a/0x620 kernel/printk/printk.c:1922 but task is already holding lock: (&(&port->lock)->rlock){-.-.}, at: [] tty_port_close_start.part.0+0x28/0x4c0 drivers/tty/tty_port.c:573 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/0xbf0 drivers/tty/serial/8250/8250_port.c:1810 serial8250_handle_irq.part.0+0x28d/0x330 drivers/tty/serial/8250/8250_port.c:1897 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1870 [inline] serial8250_default_handle_irq+0x8a/0x1f0 drivers/tty/serial/8250/8250_port.c:1913 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+0xf0/0x250 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:625 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+0x46/0xbb -> #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+0x7a7/0x9d0 drivers/tty/serial/8250/8250_port.c:3253 call_console_drivers kernel/printk/printk.c:1725 [inline] console_unlock+0x99d/0xf20 kernel/printk/printk.c:2400 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1923 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 register_console+0x6f4/0xad0 kernel/printk/printk.c:2719 univ8250_console_init+0x2f/0x3a drivers/tty/serial/8250/8250_core.c:691 console_init+0x46/0x53 kernel/printk/printk.c:2800 start_kernel+0x52e/0x770 init/main.c:634 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_trylock_spinning kernel/printk/printk.c:1679 [inline] vprintk_emit+0x367/0x620 kernel/printk/printk.c:1922 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 tty_port_close_start.part.0+0x46c/0x4c0 drivers/tty/tty_port.c:575 tty_port_close_start drivers/tty/tty_port.c:647 [inline] tty_port_close+0x3b/0x130 drivers/tty/tty_port.c:640 tty_release+0x40b/0x10d0 drivers/tty/tty_io.c:1670 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb 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 *** 2 locks held by syz-executor.0/6610: #0: (&tty->legacy_mutex){+.+.}, at: [] tty_lock+0x5f/0x70 drivers/tty/tty_mutex.c:19 #1: (&(&port->lock)->rlock){-.-.}, at: [] tty_port_close_start.part.0+0x28/0x4c0 drivers/tty/tty_port.c:573 stack backtrace: CPU: 1 PID: 6610 Comm: syz-executor.0 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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_trylock_spinning kernel/printk/printk.c:1679 [inline] vprintk_emit+0x367/0x620 kernel/printk/printk.c:1922 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 tty_port_close_start.part.0+0x46c/0x4c0 drivers/tty/tty_port.c:575 tty_port_close_start drivers/tty/tty_port.c:647 [inline] tty_port_close+0x3b/0x130 drivers/tty/tty_port.c:640 tty_release+0x40b/0x10d0 drivers/tty/tty_io.c:1670 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x418e1b RSP: 002b:00007fffeb2979c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000418e1b RDX: 0000000000000000 RSI: 00000000005701a8 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2fc211c8 R10: 00007fffeb297ab0 R11: 0000000000000293 R12: 00000000000003e8 R13: 0000000000119da6 R14: 000000000056bf60 R15: 000000000056bf60 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6641 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550 do_blockdev_direct_IO fs/direct-io.c:1208 [inline] __blockdev_direct_IO+0x325/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6699 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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+0x2c1/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] ext4_find_extent+0x879/0xbc0 fs/ext4/extents.c:909 ext4_ext_map_blocks+0x19a/0x6b10 fs/ext4/extents.c:4322 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ext4_map_blocks+0x675/0x1730 fs/ext4/inode.c:657 _ext4_get_block+0x187/0x480 fs/ext4/inode.c:810 ext4_get_block_trans+0x143/0x220 fs/ext4/inode.c:871 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ext4_dio_get_block_unwritten_async+0x69/0x1b0 fs/ext4/inode.c:904 get_more_blocks fs/direct-io.c:718 [inline] do_direct_IO fs/direct-io.c:1003 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x3f6d/0xdc60 fs/direct-io.c:1422 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 6786 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 sp0: Synchronizing with TNC Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 [U] è slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 ttyprintk ttyprintk: tty_port_close_start: tty->count = 1 port count = 2 ext4_es_alloc_extent fs/ext4/extents_status.c:334 [inline] __es_insert_extent+0x338/0x1360 fs/ext4/extents_status.c:673 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ext4_es_insert_extent+0x1b9/0x530 fs/ext4/extents_status.c:727 ext4_map_blocks+0x887/0x1730 fs/ext4/inode.c:728 _ext4_get_block+0x187/0x480 fs/ext4/inode.c:810 ext4_get_block_trans+0x143/0x220 fs/ext4/inode.c:871 ext4_dio_get_block_unwritten_async+0x69/0x1b0 fs/ext4/inode.c:904 get_more_blocks fs/direct-io.c:718 [inline] do_direct_IO fs/direct-io.c:1003 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x3f6d/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6830 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] ext4_init_io_end+0x23/0x100 fs/ext4/page-io.c:253 ext4_dio_get_block_unwritten_async+0x102/0x1b0 fs/ext4/inode.c:918 get_more_blocks fs/direct-io.c:718 [inline] do_direct_IO fs/direct-io.c:1003 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x3f6d/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 6917 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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+0x2c1/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] ext4_find_extent+0x879/0xbc0 fs/ext4/extents.c:909 ext4_ext_map_blocks+0x19a/0x6b10 fs/ext4/extents.c:4322 ext4_map_blocks+0x675/0x1730 fs/ext4/inode.c:657 _ext4_get_block+0x187/0x480 fs/ext4/inode.c:810 ext4_get_block_trans+0x143/0x220 fs/ext4/inode.c:871 ext4_dio_get_block_unwritten_async+0x69/0x1b0 fs/ext4/inode.c:904 get_more_blocks fs/direct-io.c:718 [inline] do_direct_IO fs/direct-io.c:1003 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x3f6d/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7002 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bio_alloc_bioset+0x41b/0x830 block/bio.c:486 bio_alloc include/linux/bio.h:422 [inline] dio_bio_alloc fs/direct-io.c:439 [inline] dio_new_bio fs/direct-io.c:745 [inline] dio_send_cur_page fs/direct-io.c:820 [inline] submit_page_section fs/direct-io.c:883 [inline] do_direct_IO fs/direct-io.c:1097 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x15bb/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 net_ratelimit: 6 callbacks suppressed ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 sp0: Synchronizing with TNC [U] è CPU: 0 PID: 7068 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bvec_alloc+0xcc/0x2d0 block/bio.c:216 bio_alloc_bioset+0x585/0x830 block/bio.c:506 bio_alloc include/linux/bio.h:422 [inline] dio_bio_alloc fs/direct-io.c:439 [inline] dio_new_bio fs/direct-io.c:745 [inline] dio_send_cur_page fs/direct-io.c:820 [inline] submit_page_section fs/direct-io.c:883 [inline] do_direct_IO fs/direct-io.c:1097 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x15bb/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 [U] è CPU: 0 PID: 7127 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x54/0x410 mm/slab.c:3640 create_task_io_context+0x2a/0x3c0 block/blk-ioc.c:278 create_io_context block/blk.h:323 [inline] generic_make_request_checks+0x1350/0x19f0 block/blk-core.c:2127 generic_make_request+0x67/0x850 block/blk-core.c:2185 submit_bio+0x234/0x390 block/blk-core.c:2303 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 dio_bio_submit fs/direct-io.c:482 [inline] dio_send_cur_page fs/direct-io.c:816 [inline] submit_page_section fs/direct-io.c:883 [inline] do_direct_IO fs/direct-io.c:1097 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x7622/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 sp0: Synchronizing with TNC ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 [U] è CPU: 0 PID: 7202 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bio_alloc_bioset+0x41b/0x830 block/bio.c:486 bio_alloc include/linux/bio.h:422 [inline] dio_bio_alloc fs/direct-io.c:439 [inline] dio_new_bio fs/direct-io.c:745 [inline] dio_send_cur_page fs/direct-io.c:820 [inline] submit_page_section fs/direct-io.c:883 [inline] do_direct_IO fs/direct-io.c:1097 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x15bb/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 CPU: 1 PID: 7280 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bvec_alloc+0xcc/0x2d0 block/bio.c:216 bio_alloc_bioset+0x585/0x830 block/bio.c:506 bio_alloc include/linux/bio.h:422 [inline] dio_bio_alloc fs/direct-io.c:439 [inline] dio_new_bio fs/direct-io.c:745 [inline] dio_send_cur_page fs/direct-io.c:820 [inline] submit_page_section fs/direct-io.c:883 [inline] do_direct_IO fs/direct-io.c:1097 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x15bb/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 [U] è CPU: 0 PID: 7338 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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:4131 [inline] __alloc_pages_nodemask+0x22c/0x2720 mm/page_alloc.c:4179 alloc_pages_current+0x155/0x260 mm/mempolicy.c:2113 alloc_pages include/linux/gfp.h:520 [inline] pte_alloc_one+0x15/0x100 arch/x86/mm/pgtable.c:30 do_huge_pmd_anonymous_page+0x500/0x1700 mm/huge_memory.c:692 create_huge_pmd mm/memory.c:3974 [inline] __handle_mm_fault+0x2ac4/0x4620 mm/memory.c:4177 handle_mm_fault+0x391/0x860 mm/memory.c:4243 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x445/0x11d0 mm/gup.c:714 __get_user_pages_locked mm/gup.c:885 [inline] __get_user_pages_unlocked mm/gup.c:999 [inline] get_user_pages_unlocked+0x1df/0x2e0 mm/gup.c:1024 get_user_pages_fast+0x21b/0x2b0 mm/gup.c:1883 iov_iter_get_pages+0x203/0xd50 lib/iov_iter.c:1081 dio_refill_pages fs/direct-io.c:170 [inline] dio_get_page fs/direct-io.c:214 [inline] do_direct_IO fs/direct-io.c:982 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x54e2/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 [U] è CPU: 0 PID: 7403 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x28e/0x3c0 mm/slab.c:3550 ptlock_alloc+0x1d/0x70 mm/memory.c:4834 ptlock_init include/linux/mm.h:1764 [inline] pgtable_page_ctor include/linux/mm.h:1798 [inline] pte_alloc_one+0x57/0x100 arch/x86/mm/pgtable.c:33 do_huge_pmd_anonymous_page+0x500/0x1700 mm/huge_memory.c:692 create_huge_pmd mm/memory.c:3974 [inline] __handle_mm_fault+0x2ac4/0x4620 mm/memory.c:4177 handle_mm_fault+0x391/0x860 mm/memory.c:4243 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x445/0x11d0 mm/gup.c:714 __get_user_pages_locked mm/gup.c:885 [inline] __get_user_pages_unlocked mm/gup.c:999 [inline] get_user_pages_unlocked+0x1df/0x2e0 mm/gup.c:1024 get_user_pages_fast+0x21b/0x2b0 mm/gup.c:1883 iov_iter_get_pages+0x203/0xd50 lib/iov_iter.c:1081 dio_refill_pages fs/direct-io.c:170 [inline] dio_get_page fs/direct-io.c:214 [inline] do_direct_IO fs/direct-io.c:982 [inline] do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x54e2/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7516 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bio_alloc_bioset+0x41b/0x830 block/bio.c:486 bio_clone_fast+0x20/0x130 block/bio.c:625 bio_split+0x69/0x250 block/bio.c:1944 blk_bio_segment_split block/blk-merge.c:172 [inline] blk_queue_split+0x49f/0x1610 block/blk-merge.c:201 blk_mq_make_request+0x131/0x1ad0 block/blk-mq.c:1653 generic_make_request block/blk-core.c:2229 [inline] generic_make_request+0x1f6/0x850 block/blk-core.c:2173 submit_bio+0x234/0x390 block/blk-core.c:2303 dio_bio_submit fs/direct-io.c:482 [inline] dio_send_cur_page fs/direct-io.c:826 [inline] do_blockdev_direct_IO fs/direct-io.c:1356 [inline] __blockdev_direct_IO+0x97f2/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 7586 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bio_alloc_bioset+0x41b/0x830 block/bio.c:486 bio_clone_fast+0x20/0x130 block/bio.c:625 bio_split+0x69/0x250 block/bio.c:1944 blk_bio_segment_split block/blk-merge.c:172 [inline] blk_queue_split+0x49f/0x1610 block/blk-merge.c:201 blk_mq_make_request+0x131/0x1ad0 block/blk-mq.c:1653 generic_make_request block/blk-core.c:2229 [inline] generic_make_request+0x1f6/0x850 block/blk-core.c:2173 submit_bio+0x234/0x390 block/blk-core.c:2303 dio_bio_submit fs/direct-io.c:482 [inline] dio_send_cur_page fs/direct-io.c:826 [inline] do_blockdev_direct_IO fs/direct-io.c:1356 [inline] __blockdev_direct_IO+0x97f2/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 sp0: Synchronizing with TNC [U] è sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 7681 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bio_alloc_bioset+0x41b/0x830 block/bio.c:486 bio_clone_fast+0x20/0x130 block/bio.c:625 bio_split+0x69/0x250 block/bio.c:1944 blk_bio_segment_split block/blk-merge.c:172 [inline] blk_queue_split+0x49f/0x1610 block/blk-merge.c:201 blk_mq_make_request+0x131/0x1ad0 block/blk-mq.c:1653 generic_make_request block/blk-core.c:2229 [inline] generic_make_request+0x1f6/0x850 block/blk-core.c:2173 submit_bio+0x234/0x390 block/blk-core.c:2303 dio_bio_submit fs/direct-io.c:482 [inline] dio_send_cur_page fs/direct-io.c:826 [inline] do_blockdev_direct_IO fs/direct-io.c:1356 [inline] __blockdev_direct_IO+0x97f2/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 net_ratelimit: 20 callbacks suppressed ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC [U] è FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 CPU: 0 PID: 7749 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bio_alloc_bioset+0x41b/0x830 block/bio.c:486 bio_clone_fast+0x20/0x130 block/bio.c:625 bio_split+0x69/0x250 block/bio.c:1944 blk_bio_segment_split block/blk-merge.c:172 [inline] blk_queue_split+0x49f/0x1610 block/blk-merge.c:201 blk_mq_make_request+0x131/0x1ad0 block/blk-mq.c:1653 generic_make_request block/blk-core.c:2229 [inline] generic_make_request+0x1f6/0x850 block/blk-core.c:2173 submit_bio+0x234/0x390 block/blk-core.c:2303 dio_bio_submit fs/direct-io.c:482 [inline] dio_send_cur_page fs/direct-io.c:826 [inline] do_blockdev_direct_IO fs/direct-io.c:1356 [inline] __blockdev_direct_IO+0x97f2/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000 ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 sp0: Synchronizing with TNC [U] è ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 sp0: Synchronizing with TNC CPU: 1 PID: 7815 Comm: syz-executor.4 Not tainted 4.14.218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [U] è 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] kmem_cache_alloc+0x40/0x3c0 mm/slab.c:3550 mempool_alloc+0x10e/0x2d0 mm/mempool.c:330 bio_alloc_bioset+0x41b/0x830 block/bio.c:486 bio_clone_fast+0x20/0x130 block/bio.c:625 bio_split+0x69/0x250 block/bio.c:1944 blk_bio_segment_split block/blk-merge.c:172 [inline] blk_queue_split+0x49f/0x1610 block/blk-merge.c:201 blk_mq_make_request+0x131/0x1ad0 block/blk-mq.c:1653 generic_make_request block/blk-core.c:2229 [inline] generic_make_request+0x1f6/0x850 block/blk-core.c:2173 submit_bio+0x234/0x390 block/blk-core.c:2303 dio_bio_submit fs/direct-io.c:482 [inline] dio_send_cur_page fs/direct-io.c:826 [inline] do_blockdev_direct_IO fs/direct-io.c:1356 [inline] __blockdev_direct_IO+0x97f2/0xdc60 fs/direct-io.c:1422 ext4_direct_IO_write fs/ext4/inode.c:3725 [inline] ext4_direct_IO+0x888/0x1b80 fs/ext4/inode.c:3866 generic_file_direct_write+0x1df/0x420 mm/filemap.c:2958 __generic_file_write_iter+0x2a2/0x590 mm/filemap.c:3137 ext4_file_write_iter+0x7c5/0xd20 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1778 [inline] aio_write+0x2ed/0x560 fs/aio.c:1553 io_submit_one fs/aio.c:1641 [inline] do_io_submit+0x847/0x1570 fs/aio.c:1709 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465b09 RSP: 002b:00007f0d37e53188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000020000540 RSI: 0000000000000f10 RDI: 00007f0d37e32000 RBP: 00007f0d37e531d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc0e7d196f R14: 00007f0d37e53300 R15: 0000000000022000