RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000001b R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c ====================================================== WARNING: possible circular locking dependency detected 4.14.197-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.2/11596 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+0x1f8/0x240 drivers/tty/serial/8250/8250_port.c:1883 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1869 [inline] serial8250_default_handle_irq+0x8a/0x1f0 drivers/tty/serial/8250/8250_port.c:1899 serial8250_interrupt+0xe4/0x1a0 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+0xf0/0x246 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 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0x47/0x370 arch/x86/kernel/process.c:558 cpuidle_idle_call kernel/sched/idle.c:156 [inline] do_idle+0x250/0x3c0 kernel/sched/idle.c:246 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:351 start_kernel+0x750/0x770 init/main.c:708 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 -> #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:3239 call_console_drivers kernel/printk/printk.c:1725 [inline] console_unlock+0x99d/0xf20 kernel/printk/printk.c:2397 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1923 vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 register_console+0x6f4/0xad0 kernel/printk/printk.c:2716 univ8250_console_init+0x2f/0x3a drivers/tty/serial/8250/8250_core.c:691 console_init+0x46/0x53 kernel/printk/printk.c:2797 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+0x58/0x152 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+0x402/0xe20 drivers/tty/tty_io.c:1670 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xa08/0x27f0 kernel/exit.c:865 do_group_exit+0x100/0x2e0 kernel/exit.c:962 get_signal+0x38d/0x1ca0 kernel/signal.c:2423 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 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.2/11596: #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: 0 PID: 11596 Comm: syz-executor.2 Not tainted 4.14.197-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+0x1b2/0x283 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+0x58/0x152 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+0x402/0xe20 drivers/tty/tty_io.c:1670 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xa08/0x27f0 kernel/exit.c:865 do_group_exit+0x100/0x2e0 kernel/exit.c:962 get_signal+0x38d/0x1ca0 kernel/signal.c:2423 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 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: 0033:0x45d5b9 RSP: 002b:00007f5f0d23acf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 000000000118cf48 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000118cf48 RBP: 000000000118cf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffc8f90ce3f R14: 00007f5f0d23b9c0 R15: 000000000118cf4c IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 11600 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000001c R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 11667 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000001d R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 11752 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000001e R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 11812 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000001f R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 11899 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000020 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 11954 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000021 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 12073 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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 radix_tree_node_alloc.constprop.0+0x1b0/0x2f0 lib/radix-tree.c:397 idr_get_free_cmn+0x595/0x8d0 lib/radix-tree.c:2170 idr_get_free include/linux/radix-tree.h:369 [inline] idr_alloc_cmn+0xe8/0x1e0 lib/idr.c:24 idr_alloc include/linux/idr.h:116 [inline] idr_alloc_cyclic+0xc2/0x1d0 lib/idr.c:56 __kernfs_new_node+0xaf/0x470 fs/kernfs/dir.c:638 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000022 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 12197 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000023 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 12277 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000024 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 12324 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000025 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 12403 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2897 [inline] prepare_alloc_pages mm/page_alloc.c:4130 [inline] __alloc_pages_nodemask+0x22c/0x2720 mm/page_alloc.c:4178 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] kmem_getpages mm/slab.c:1419 [inline] cache_grow_begin+0x8f/0x420 mm/slab.c:2676 cache_alloc_refill+0x273/0x350 mm/slab.c:3043 ____cache_alloc mm/slab.c:3125 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] kmem_cache_alloc+0x333/0x3c0 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000026 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c 9pnet_virtio: no channels available for device syz FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 12461 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000027 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 12528 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000028 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 12558 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000029 R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 12623 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000002a R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 12683 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000002b R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 12771 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2897 [inline] prepare_alloc_pages mm/page_alloc.c:4130 [inline] __alloc_pages_nodemask+0x22c/0x2720 mm/page_alloc.c:4178 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] kmem_getpages mm/slab.c:1419 [inline] cache_grow_begin+0x8f/0x420 mm/slab.c:2676 cache_alloc_refill+0x273/0x350 mm/slab.c:3043 ____cache_alloc mm/slab.c:3125 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] kmem_cache_alloc+0x333/0x3c0 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000002c R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 12859 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45d5b9 RSP: 002b:00007f33e95e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf00 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007f33e95e2ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000002d R13: 00007ffe7419fe8f R14: 00007f33e95e39c0 R15: 000000000118cf4c FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 12940 Comm: syz-executor.1 Not tainted 4.14.197-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+0x1b2/0x283 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x154 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] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x320 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x22b/0x710 fs/sysfs/group.c:134 sysfs_create_group fs/sysfs/group.c:156 [inline] sysfs_create_groups fs/sysfs/group.c:183 [inline] sysfs_create_groups+0x92/0x127 fs/sysfs/group.c:173 device_add_groups drivers/base/core.c:1049 [inline] device_add_attrs drivers/base/core.c:1197 [inline] device_add+0x77b/0x1510 drivers/base/core.c:1886 netdev_register_kobject+0x17d/0x3a0 net/core/net-sysfs.c:1608 register_netdevice+0x955/0xe40 net/core/dev.c:7659 br_dev_newlink+0x23/0x100 net/bridge/br_netlink.c:1226 rtnl_newlink+0xf88/0x1830 net/core/rtnetlink.c:2728