RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb7794206d4 R13: 00000000004c7c83 R14: 00000000004e4e40 R15: 0000000000000005 ====================================================== WARNING: possible circular locking dependency detected 4.14.160-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/10007 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 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 __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 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 *** 5 locks held by syz-executor.4/10007: #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: (&o_tty->termios_rwsem/1){++++}, at: [] n_tty_write+0x179/0xf20 drivers/tty/n_tty.c:2316 #3: (&ldata->output_lock){+.+.}, at: [] process_output_block drivers/tty/n_tty.c:550 [inline] #3: (&ldata->output_lock){+.+.}, at: [] n_tty_write+0x48a/0xf20 drivers/tty/n_tty.c:2333 #4: (&(&port->lock)->rlock){-.-.}, at: [] pty_write+0xe0/0x1d0 drivers/tty/pty.c:120 stack backtrace: CPU: 1 PID: 10007 Comm: syz-executor.4 Not tainted 4.14.160-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 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 __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 RIP: 0033:0x45a919 RSP: 002b:00007fb77941fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb77941fc90 RCX: 000000000045a919 RDX: 00000000ffffff0b RSI: 0000000020c34fff RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb7794206d4 R13: 00000000004c7c83 R14: 00000000004e4e40 R15: 0000000000000005 kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: '0:43' (ffff888058a9d190): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '0:43' (ffff888058a9d190): fill_kobj_path: path = '/devices/virtual/bdi/0:43' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10027 Comm: syz-executor.5 Not tainted 4.14.160-syzkaller #0 kobject: '0:43' (ffff888058a9d190): kobject_cleanup, parent (null) 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 kobject: '0:43' (ffff888058a9d190): calling ktype release should_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x70/0x480 fs/kernfs/dir.c:632 kobject: '0:43': free name kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:677 __kernfs_create_file+0x46/0x323 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e4/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x232/0x7b0 fs/sysfs/group.c:134 kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env sysfs_create_group+0x20/0x30 fs/sysfs/group.c:156 loop_sysfs_init drivers/block/loop.c:811 [inline] loop_set_fd drivers/block/loop.c:936 [inline] lo_ioctl+0x1176/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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 kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env audit: type=1400 audit(1577110505.896:70): avc: denied { map } for pid=10039 comm="syz-executor.4" path="/selinux/avc/hash_stats" dev="selinuxfs" ino=26 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:security_t:s0 tclass=file permissive=1 kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env JFS: discard option not supported on device JFS: discard option not supported on device kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' jfs: Unrecognized mount option "d" or missing value kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' CPU: 0 PID: 10071 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x70/0x480 fs/kernfs/dir.c:632 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:677 __kernfs_create_file+0x46/0x323 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e4/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x232/0x7b0 fs/sysfs/group.c:134 sysfs_create_group+0x20/0x30 fs/sysfs/group.c:156 loop_sysfs_init drivers/block/loop.c:811 [inline] loop_set_fd drivers/block/loop.c:936 [inline] lo_ioctl+0x1176/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 audit: type=1400 audit(1577110506.616:71): avc: denied { create } for pid=10083 comm="syz-executor.1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_scsitransport_socket permissive=1 kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' JFS: discard option not supported on device JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10108 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x70/0x480 fs/kernfs/dir.c:632 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:677 __kernfs_create_file+0x46/0x323 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e4/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x232/0x7b0 fs/sysfs/group.c:134 sysfs_create_group+0x20/0x30 fs/sysfs/group.c:156 loop_sysfs_init drivers/block/loop.c:811 [inline] loop_set_fd drivers/block/loop.c:936 [inline] lo_ioctl+0x1176/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env JFS: discard option not supported on device kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10142 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x70/0x480 fs/kernfs/dir.c:632 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:677 __kernfs_create_file+0x46/0x323 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e4/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x232/0x7b0 fs/sysfs/group.c:134 sysfs_create_group+0x20/0x30 fs/sysfs/group.c:156 loop_sysfs_init drivers/block/loop.c:811 [inline] loop_set_fd drivers/block/loop.c:936 [inline] lo_ioctl+0x1176/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' JFS: discard option not supported on device JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' net_ratelimit: 14 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10176 Comm: syz-executor.5 Not tainted 4.14.160-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_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+0x2f0/0x7a0 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] kobject_get_path+0xbb/0x1a0 lib/kobject.c:154 kobject_uevent_env+0x39c/0xc23 lib/kobject_uevent.c:402 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 JFS: discard option not supported on device kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env JFS: discard option not supported on device kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' jfs: Unrecognized mount option "d" or missing value kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env CPU: 0 PID: 10218 Comm: syz-executor.5 Not tainted 4.14.160-syzkaller #0 kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' 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_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+0x2f0/0x7a0 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] kobject_get_path+0xbb/0x1a0 lib/kobject.c:154 kobject_uevent_env+0x39c/0xc23 lib/kobject_uevent.c:402 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 JFS: discard option not supported on device JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10238 Comm: syz-executor.5 Not tainted 4.14.160-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_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+0x2f0/0x7a0 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] kobject_get_path+0xbb/0x1a0 lib/kobject.c:154 kobject_uevent_env+0x39c/0xc23 lib/kobject_uevent.c:402 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env JFS: discard option not supported on device kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10263 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x287/0x780 mm/slab.c:3640 __alloc_skb+0x9c/0x500 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 JFS: discard option not supported on device JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' --map-set only usable from mangle table kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env CPU: 1 PID: 10291 Comm: syz-executor.5 Not tainted 4.14.160-syzkaller #0 kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' 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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x287/0x780 mm/slab.c:3640 __alloc_skb+0x9c/0x500 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 JFS: discard option not supported on device kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10339 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x287/0x780 mm/slab.c:3640 __alloc_skb+0x9c/0x500 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env JFS: discard option not supported on device JFS: discard option not supported on device kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' jfs: Unrecognized mount option "d" or missing value kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10351 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x287/0x780 mm/slab.c:3640 __alloc_skb+0x9c/0x500 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env JFS: discard option not supported on device kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' JFS: discard option not supported on device kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env jfs: Unrecognized mount option "d" or missing value kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' net_ratelimit: 16 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 protocol 88fb is buggy, dev hsr_slave_1 CPU: 1 PID: 10392 Comm: syz-executor.5 Not tainted 4.14.160-syzkaller #0 protocol 88fb is buggy, dev hsr_slave_0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 protocol 88fb is buggy, dev hsr_slave_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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x287/0x780 mm/slab.c:3640 __alloc_skb+0x9c/0x500 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 JFS: discard option not supported on device JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' CPU: 0 PID: 10414 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node_trace+0x280/0x770 mm/slab.c:3659 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x3d/0x80 mm/slab.c:3696 __kmalloc_reserve.isra.0+0x40/0xe0 net/core/skbuff.c:137 __alloc_skb+0xcf/0x500 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 JFS: discard option not supported on device kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10453 Comm: syz-executor.5 Not tainted 4.14.160-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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x287/0x780 mm/slab.c:3640 __alloc_skb+0x9c/0x500 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' JFS: discard option not supported on device JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env CPU: 0 PID: 10482 Comm: syz-executor.5 Not tainted 4.14.160-syzkaller #0 kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' 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_failslab+0xdb/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node_trace+0x280/0x770 mm/slab.c:3659 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x3d/0x80 mm/slab.c:3696 __kmalloc_reserve.isra.0+0x40/0xe0 net/core/skbuff.c:137 __alloc_skb+0xcf/0x500 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:980 [inline] kobject_uevent_env+0x781/0xc23 lib/kobject_uevent.c:479 kobject_uevent+0x20/0x26 lib/kobject_uevent.c:553 loop_set_fd drivers/block/loop.c:938 [inline] lo_ioctl+0x11e7/0x1ce0 drivers/block/loop.c:1407 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x96b/0x1860 block/ioctl.c:594 block_ioctl+0xde/0x120 fs/block_dev.c:1881 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: 0033:0x45a787 RSP: 002b:00007fd3c5cc0a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3c5cc0c90 RCX: 000000000045a787 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 00007fd3c5cc16d4 R13: 00000000004cadb6 R14: 00000000004e43f0 R15: 0000000000000003 kobject: 'loop4' (ffff8880a41b2e20): kobject_uevent_env JFS: discard option not supported on device kobject: 'loop4' (ffff8880a41b2e20): fill_kobj_path: path = '/devices/virtual/block/loop4' JFS: discard option not supported on device jfs: Unrecognized mount option "d" or missing value kobject: 'loop2' (ffff8880a41235e0): kobject_uevent_env kobject: 'loop2' (ffff8880a41235e0): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env kobject: 'loop5' (ffff8880a41ef720): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (ffff8880a412e520): kobject_uevent_env kobject: 'loop3' (ffff8880a412e520): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (ffff8880a41ef720): kobject_uevent_env