RDX: 0000000000000003 RSI: 000000000000540a RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 R13: 0000000000000533 R14: 00000000004c6392 R15: 0000000000000000 ====================================================== WARNING: possible circular locking dependency detected 4.14.166-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/10169 is trying to acquire lock: (console_owner){-.-.}, at: [] console_trylock_spinning kernel/printk/printk.c:1658 [inline] (console_owner){-.-.}, at: [] vprintk_emit kernel/printk/printk.c:1922 [inline] (console_owner){-.-.}, at: [] vprintk_emit+0x2f1/0x600 kernel/printk/printk.c:1888 but task is already holding lock: (&(&port->lock)->rlock){-.-.}, at: [] pty_write+0xe0/0x1d0 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){-.-.}: lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:160 tty_port_tty_get+0x22/0x90 drivers/tty/tty_port.c:287 tty_port_default_wakeup+0x16/0x40 drivers/tty/tty_port.c:46 tty_port_tty_wakeup+0x57/0x70 drivers/tty/tty_port.c:389 uart_write_wakeup+0x46/0x70 drivers/tty/serial/serial_core.c:116 serial8250_tx_chars+0x40d/0xa10 drivers/tty/serial/8250/8250_port.c:1810 serial8250_handle_irq.part.0+0x206/0x250 drivers/tty/serial/8250/8250_port.c:1883 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1869 [inline] serial8250_default_handle_irq+0xa1/0x120 drivers/tty/serial/8250/8250_port.c:1899 serial8250_interrupt+0xe9/0x1a0 drivers/tty/serial/8250/8250_core.c:129 __handle_irq_event_percpu+0x125/0x7f0 kernel/irq/handle.c:147 handle_irq_event_percpu+0x65/0x130 kernel/irq/handle.c:187 handle_irq_event+0xa7/0x134 kernel/irq/handle.c:204 handle_edge_irq+0x22b/0x840 kernel/irq/chip.c:770 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x39/0x50 arch/x86/kernel/irq_64.c:87 do_IRQ+0x99/0x1d0 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+0x95/0xe0 kernel/locking/spinlock.c:192 spin_unlock_irqrestore include/linux/spinlock.h:372 [inline] uart_write+0x29a/0x4f0 drivers/tty/serial/serial_core.c:625 process_output_block drivers/tty/n_tty.c:595 [inline] n_tty_write+0x38b/0xf20 drivers/tty/n_tty.c:2333 do_tty_write drivers/tty/tty_io.c:959 [inline] tty_write+0x3f6/0x700 drivers/tty/tty_io.c:1043 redirected_tty_write+0xa3/0xb0 drivers/tty/tty_io.c:1064 __vfs_write+0x105/0x6b0 fs/read_write.c:480 vfs_write+0x198/0x500 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xfd/0x230 fs/read_write.c:582 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 -> #1 (&port_lock_key){-.-.}: lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:160 serial8250_console_write+0x709/0x930 drivers/tty/serial/8250/8250_port.c:3232 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:597 call_console_drivers kernel/printk/printk.c:1725 [inline] console_unlock+0x9ba/0xed0 kernel/printk/printk.c:2397 vprintk_emit kernel/printk/printk.c:1923 [inline] vprintk_emit+0x1f9/0x600 kernel/printk/printk.c:1888 vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 vprintk_func+0x5d/0x159 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 register_console+0x614/0x9e0 kernel/printk/printk.c:2716 univ8250_console_init+0x33/0x3f drivers/tty/serial/8250/8250_core.c:692 console_init+0x4d/0x5d kernel/printk/printk.c:2797 start_kernel+0x43c/0x6fd init/main.c:634 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:399 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:380 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 -> #0 (console_owner){-.-.}: check_prev_add kernel/locking/lockdep.c:1901 [inline] check_prevs_add kernel/locking/lockdep.c:2018 [inline] validate_chain kernel/locking/lockdep.c:2460 [inline] __lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487 lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994 console_trylock_spinning kernel/printk/printk.c:1679 [inline] vprintk_emit kernel/printk/printk.c:1922 [inline] vprintk_emit+0x32e/0x600 kernel/printk/printk.c:1888 vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 vprintk_func+0x5d/0x159 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 fail_dump lib/fault-inject.c:44 [inline] should_fail.cold+0xe4/0x159 lib/fault-inject.c:149 should_failslab+0xdb/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+0x71/0x7a0 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:169 [inline] __tty_buffer_request_room+0x1a4/0x500 drivers/tty/tty_buffer.c:267 tty_insert_flip_string_fixed_flag+0x8a/0x1c0 drivers/tty/tty_buffer.c:312 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x113/0x1d0 drivers/tty/pty.c:122 tty_send_xchar+0x237/0x330 drivers/tty/tty_io.c:1092 n_tty_ioctl_helper drivers/tty/tty_ioctl.c:926 [inline] n_tty_ioctl_helper+0x14d/0x360 drivers/tty/tty_ioctl.c:893 n_tty_ioctl+0x4a/0x2e0 drivers/tty/n_tty.c:2466 tty_ioctl+0x8f7/0x1320 drivers/tty/tty_io.c:2670 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 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 *** 4 locks held by syz-executor.1/10169: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&tty->atomic_write_lock){+.+.}, at: [] tty_write_lock+0x20/0x60 drivers/tty/tty_io.c:885 #2: (&tty->termios_rwsem){++++}, at: [] tty_send_xchar+0x1dd/0x330 drivers/tty/tty_io.c:1089 #3: (&(&port->lock)->rlock){-.-.}, at: [] pty_write+0xe0/0x1d0 drivers/tty/pty.c:120 stack backtrace: CPU: 1 PID: 10169 Comm: syz-executor.1 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1901 [inline] check_prevs_add kernel/locking/lockdep.c:2018 [inline] validate_chain kernel/locking/lockdep.c:2460 [inline] __lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487 lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994 console_trylock_spinning kernel/printk/printk.c:1679 [inline] vprintk_emit kernel/printk/printk.c:1922 [inline] vprintk_emit+0x32e/0x600 kernel/printk/printk.c:1888 vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 vprintk_func+0x5d/0x159 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 fail_dump lib/fault-inject.c:44 [inline] should_fail.cold+0xe4/0x159 lib/fault-inject.c:149 should_failslab+0xdb/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+0x71/0x7a0 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] tty_buffer_alloc drivers/tty/tty_buffer.c:169 [inline] __tty_buffer_request_room+0x1a4/0x500 drivers/tty/tty_buffer.c:267 tty_insert_flip_string_fixed_flag+0x8a/0x1c0 drivers/tty/tty_buffer.c:312 tty_insert_flip_string include/linux/tty_flip.h:37 [inline] pty_write+0x113/0x1d0 drivers/tty/pty.c:122 tty_send_xchar+0x237/0x330 drivers/tty/tty_io.c:1092 n_tty_ioctl_helper drivers/tty/tty_ioctl.c:926 [inline] n_tty_ioctl_helper+0x14d/0x360 drivers/tty/tty_ioctl.c:893 n_tty_ioctl+0x4a/0x2e0 drivers/tty/n_tty.c:2466 tty_ioctl+0x8f7/0x1320 drivers/tty/tty_io.c:2670 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f20c88c5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f20c88c66d4 RCX: 000000000045aff9 RDX: 0000000000000003 RSI: 000000000000540a RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 R13: 0000000000000533 R14: 00000000004c6392 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) CPU: 0 PID: 10179 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10166 comm=syz-executor.4 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 IPv6: ADDRCONF(NETDEV_UP): veth321: link is not ready batman_adv: batadv0: Adding interface: veth321 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 batman_adv: batadv0: The MTU of interface veth321 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. do_preadv+0x15d/0x200 fs/read_write.c:1065 batman_adv: batadv0: Interface activated: veth321 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 000000000000000b FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10203 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 000000000000000c (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 nla_parse: 39 callbacks suppressed netlink: 16 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. CPU: 0 PID: 10222 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 IPv6: ADDRCONF(NETDEV_UP): veth1553: link is not ready faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 batman_adv: batadv0: Adding interface: veth1553 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 batman_adv: batadv0: The MTU of interface veth1553 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 batman_adv: batadv0: Interface activated: veth1553 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10225 comm=syz-executor.4 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 000000000000000d FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) CPU: 0 PID: 10243 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 IPv6: ADDRCONF(NETDEV_UP): veth325: link is not ready alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 batman_adv: batadv0: Adding interface: veth325 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 batman_adv: batadv0: The MTU of interface veth325 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 batman_adv: batadv0: Interface activated: veth325 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10249 comm=syz-executor.2 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 000000000000000e FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. CPU: 0 PID: 10259 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. 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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 000000000000000f IPv6: ADDRCONF(NETDEV_UP): veth327: link is not ready batman_adv: batadv0: Adding interface: veth327 batman_adv: batadv0: The MTU of interface veth327 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Interface activated: veth327 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 IPv6: ADDRCONF(NETDEV_UP): veth329: link is not ready FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 batman_adv: batadv0: Adding interface: veth329 batman_adv: batadv0: The MTU of interface veth329 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. CPU: 0 PID: 10294 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 batman_adv: batadv0: Interface activated: veth329 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10288 comm=syz-executor.4 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000010 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 IPv6: ADDRCONF(NETDEV_UP): veth331: link is not ready CPU: 0 PID: 10326 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 batman_adv: batadv0: Adding interface: veth331 vfs_readv+0xd3/0x130 fs/read_write.c:981 batman_adv: batadv0: The MTU of interface veth331 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. do_preadv+0x15d/0x200 fs/read_write.c:1065 batman_adv: batadv0: Interface activated: veth331 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000011 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10345 comm=syz-executor.4 batman_adv: batadv0: Interface deactivated: veth331 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 CPU: 1 PID: 10350 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000012 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10343 comm=syz-executor.2 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10348 comm=syz-executor.2 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 CPU: 1 PID: 10366 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000013 IPv6: ADDRCONF(NETDEV_UP): veth335: link is not ready batman_adv: batadv0: Adding interface: veth335 batman_adv: batadv0: The MTU of interface veth335 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Interface activated: veth335 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 batman_adv: batadv0: Interface deactivated: veth335 CPU: 0 PID: 10388 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=38219 sclass=netlink_route_socket pig=10386 comm=syz-executor.1 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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10396 comm=syz-executor.4 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000014 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) CPU: 1 PID: 10409 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000015 IPv6: ADDRCONF(NETDEV_UP): veth337: link is not ready batman_adv: batadv0: Adding interface: veth337 batman_adv: batadv0: The MTU of interface veth337 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Interface activated: veth337 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10425 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 IPv6: ADDRCONF(NETDEV_UP): veth339: link is not ready alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000016 batman_adv: batadv0: Adding interface: veth339 batman_adv: batadv0: The MTU of interface veth339 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Interface activated: veth339 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 nla_parse: 21 callbacks suppressed netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10454 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 IPv6: ADDRCONF(NETDEV_UP): veth341: link is not ready should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 batman_adv: batadv0: Adding interface: veth341 batman_adv: batadv0: The MTU of interface veth341 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 batman_adv: batadv0: Interface activated: veth341 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 mm/gup.c:714 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 __get_user_pages_locked mm/gup.c:885 [inline] __get_user_pages_unlocked mm/gup.c:999 [inline] get_user_pages_unlocked+0x1f0/0x2f0 mm/gup.c:1024 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10426 comm=syz-executor.4 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000017 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10471 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000018 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.4'. IPv6: ADDRCONF(NETDEV_UP): veth343: link is not ready batman_adv: batadv0: Adding interface: veth343 batman_adv: batadv0: The MTU of interface veth343 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Interface activated: veth343 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10509 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.2'. 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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 IPv6: ADDRCONF(NETDEV_UP): veth187: link is not ready should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 batman_adv: batadv0: Adding interface: veth187 batman_adv: batadv0: The MTU of interface veth187 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 batman_adv: batadv0: Interface activated: veth187 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10502 comm=syz-executor.2 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 IPv6: ADDRCONF(NETDEV_UP): veth345: link is not ready iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10479 comm=syz-executor.4 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 batman_adv: batadv0: Adding interface: veth345 batman_adv: batadv0: The MTU of interface veth345 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 batman_adv: batadv0: Interface activated: veth345 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 0000000000000019 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 CPU: 0 PID: 10533 Comm: syz-executor.5 Not tainted 4.14.166-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 IPv6: ADDRCONF(NETDEV_UP): veth347: link is not ready Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 batman_adv: batadv0: Adding interface: veth347 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 batman_adv: batadv0: The MTU of interface veth347 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 mm/gup.c:714 batman_adv: batadv0: Interface activated: veth347 __get_user_pages_locked mm/gup.c:885 [inline] __get_user_pages_unlocked mm/gup.c:999 [inline] get_user_pages_unlocked+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 IPv6: ADDRCONF(NETDEV_UP): veth349: link is not ready __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 batman_adv: batadv0: Adding interface: veth349 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 batman_adv: batadv0: The MTU of interface veth349 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. batman_adv: batadv0: Interface activated: veth349 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 batman_adv: batadv0: Interface deactivated: veth349 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 000000000000001a (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 CPU: 0 PID: 10554 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 (unnamed net_device) (uninitialized): option packets_per_slave: invalid value (18446744073709518847) should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 (unnamed net_device) (uninitialized): option packets_per_slave: allowed values 0 - 65535 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 IPv6: ADDRCONF(NETDEV_UP): veth351: link is not ready handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 batman_adv: batadv0: Adding interface: veth351 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=10521 comm=syz-executor.4 batman_adv: batadv0: The MTU of interface veth351 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 batman_adv: batadv0: Interface activated: veth351 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252 blkdev_read_iter+0x103/0x160 fs/block_dev.c:1934 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x4eb/0x670 fs/read_write.c:673 batman_adv: batadv0: Interface deactivated: veth351 do_iter_read+0x221/0x5b0 fs/read_write.c:917 vfs_readv+0xd3/0x130 fs/read_write.c:981 do_preadv+0x15d/0x200 fs/read_write.c:1065 SYSC_preadv fs/read_write.c:1115 [inline] SyS_preadv+0x31/0x40 fs/read_write.c:1110 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45aff9 RSP: 002b:00007f071cdddc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f071cdde6d4 RCX: 000000000045aff9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000828 R14: 00000000004c95f4 R15: 000000000000001b FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10569 Comm: syz-executor.5 Not tainted 4.14.166-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+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_vma+0xc9/0x4c0 mm/mempolicy.c:2077 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline] do_anonymous_page mm/memory.c:3133 [inline] handle_pte_fault mm/memory.c:3987 [inline] __handle_mm_fault+0x186c/0x33d0 mm/memory.c:4113 handle_mm_fault+0x293/0x7c0 mm/memory.c:4150 faultin_page mm/gup.c:514 [inline] __get_user_pages+0x465/0x12e0 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+0x1f0/0x2f0 mm/gup.c:1024 get_user_pages_fast+0x228/0x2d0 mm/gup.c:1883 iov_iter_get_pages+0x20f/0xd10 lib/iov_iter.c:1081 __bio_iov_iter_get_pages block/bio.c:922 [inline] bio_iov_iter_get_pages+0x157/0x570 block/bio.c:969 __blkdev_direct_IO fs/block_dev.c:386 [inline] blkdev_direct_IO+0x7c2/0xea0 fs/block_dev.c:457 generic_file_read_iter+0x2f3/0x28d0 mm/filemap.c:2252