R10: 0000000000000000 R11: 0000000000000246 R12: 00007f38654bf6d4 R13: 00000000004cb6e7 R14: 00000000004e5090 R15: 0000000000000007 CPU: 0 PID: 16674 Comm: syz-executor.2 Not tainted 4.14.158-syzkaller #0 ====================================================== WARNING: possible circular locking dependency detected 4.14.158-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.5/16667 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/0xee0 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/0xee0 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.5/16667: #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+0xb35/0xee0 drivers/tty/n_tty.c:2378 #3: (&ldata->output_lock){+.+.}, at: [] process_output_block drivers/tty/n_tty.c:550 [inline] #3: (&ldata->output_lock){+.+.}, at: [] n_tty_write+0x48a/0xee0 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: 16667 Comm: syz-executor.5 Not tainted 4.14.158-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/0xee0 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: 0033:0x45a6f9 RSP: 002b:00007f38654bec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f38654bec90 RCX: 000000000045a6f9 RDX: 00000000ffffffde RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f38654bf6d4 R13: 00000000004cb6e7 R14: 00000000004e5090 R15: 0000000000000007 kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' 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+0x47/0x780 mm/slab.c:3550 mempool_alloc_slab+0x47/0x60 mm/mempool.c:450 mempool_alloc+0x138/0x300 mm/mempool.c:330 bio_alloc_bioset+0x368/0x680 block/bio.c:486 bio_alloc include/linux/bio.h:422 [inline] submit_bh_wbc+0xf6/0x720 fs/buffer.c:3126 submit_bh fs/buffer.c:3158 [inline] __sync_dirty_buffer fs/buffer.c:3244 [inline] __sync_dirty_buffer+0xcf/0x260 fs/buffer.c:3235 sync_dirty_buffer+0x1b/0x20 fs/buffer.c:3257 __ext4_handle_dirty_metadata+0x16e/0x470 fs/ext4/ext4_jbd2.c:300 ext4_handle_dirty_dirent_node+0x35b/0x480 fs/ext4/namei.c:401 ext4_delete_entry+0x2e4/0x430 fs/ext4/namei.c:2400 ext4_unlink fs/ext4/namei.c:3073 [inline] ext4_unlink+0x4cc/0xe90 fs/ext4/namei.c:3023 vfs_unlink+0x281/0x480 fs/namei.c:4024 do_unlinkat+0x33d/0x600 fs/namei.c:4089 SYSC_unlink fs/namei.c:4136 [inline] SyS_unlink+0x1b/0x20 fs/namei.c:4134 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f14315aec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f14315aec90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f14315af6d4 R13: 00000000004c77e4 R14: 00000000004e49b8 R15: 0000000000000003 kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' CPU: 0 PID: 16679 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' __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+0x80/0x400 mm/slab.c:2676 cache_alloc_refill mm/slab.c:3043 [inline] ____cache_alloc mm/slab.c:3125 [inline] ____cache_alloc mm/slab.c:3108 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] kmem_cache_alloc+0x6a6/0x780 mm/slab.c:3550 getname_flags fs/namei.c:138 [inline] getname_flags+0xcb/0x580 fs/namei.c:128 getname fs/namei.c:209 [inline] SYSC_symlinkat fs/namei.c:4169 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x68/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env CPU: 0 PID: 16694 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' 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: 'loop1' (ffff8880a4074c20): kobject_uevent_env 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 __d_alloc+0x2d/0x9f0 fs/dcache.c:1623 d_alloc+0x4d/0x270 fs/dcache.c:1710 __lookup_hash fs/namei.c:1570 [inline] __lookup_hash+0x58/0x180 fs/namei.c:1562 filename_create+0x16c/0x430 fs/namei.c:3672 user_path_create fs/namei.c:3729 [inline] SYSC_symlinkat fs/namei.c:4173 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0xc4/0x210 fs/namei.c:4191 kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' CPU: 0 PID: 16713 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env __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+0x80/0x400 mm/slab.c:2676 cache_alloc_refill mm/slab.c:3043 [inline] ____cache_alloc mm/slab.c:3125 [inline] ____cache_alloc mm/slab.c:3108 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] kmem_cache_alloc+0x6a6/0x780 mm/slab.c:3550 getname_flags fs/namei.c:138 [inline] getname_flags+0xcb/0x580 fs/namei.c:128 getname fs/namei.c:209 [inline] user_path_create fs/namei.c:3729 [inline] SYSC_symlinkat fs/namei.c:4173 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0xad/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' 9pnet: Insufficient options for proto=fd net_ratelimit: 20 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env CPU: 0 PID: 16736 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' 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 __d_alloc+0x2d/0x9f0 fs/dcache.c:1623 d_alloc+0x4d/0x270 fs/dcache.c:1710 __lookup_hash fs/namei.c:1570 [inline] __lookup_hash+0x58/0x180 fs/namei.c:1562 filename_create+0x16c/0x430 fs/namei.c:3672 user_path_create fs/namei.c:3729 [inline] SYSC_symlinkat fs/namei.c:4173 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0xc4/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): 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' (ffff8880a40fb5a0): kobject_uevent_env CPU: 0 PID: 16753 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' 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 kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env 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 ext4_alloc_inode+0x1d/0x610 fs/ext4/super.c:1002 kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' alloc_inode+0x64/0x180 fs/inode.c:209 new_inode_pseudo+0x19/0xf0 fs/inode.c:891 new_inode+0x1f/0x40 fs/inode.c:920 __ext4_new_inode+0x32c/0x4860 fs/ext4/ialloc.c:837 ext4_symlink+0x548/0xa80 fs/ext4/namei.c:3154 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' CPU: 1 PID: 16768 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env 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] inode_alloc_security security/selinux/hooks.c:233 [inline] selinux_inode_alloc_security+0xb6/0x2a0 security/selinux/hooks.c:2893 security_inode_alloc+0x94/0xd0 security/security.c:438 inode_init_always+0x552/0xaf0 fs/inode.c:167 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' alloc_inode+0x81/0x180 fs/inode.c:216 new_inode_pseudo+0x19/0xf0 fs/inode.c:891 new_inode+0x1f/0x40 fs/inode.c:920 __ext4_new_inode+0x32c/0x4860 fs/ext4/ialloc.c:837 ext4_symlink+0x548/0xa80 fs/ext4/namei.c:3154 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' mmap: syz-executor.2 (16775) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt. kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 CPU: 0 PID: 16779 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 alloc_pages_current+0xec/0x1e0 mm/mempolicy.c:2113 alloc_pages include/linux/gfp.h:520 [inline] __page_cache_alloc mm/filemap.c:871 [inline] __page_cache_alloc+0x248/0x3e0 mm/filemap.c:856 pagecache_get_page+0x17c/0x9e0 mm/filemap.c:1501 grab_cache_page_write_begin+0x74/0xa0 mm/filemap.c:2997 ext4_write_begin+0x214/0x1290 fs/ext4/inode.c:1288 ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 9pnet: Insufficient options for proto=fd kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env 9pnet: Insufficient options for proto=fd kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 CPU: 1 PID: 16802 Comm: syz-executor.1 Not tainted 4.14.158-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 kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1d6/0x7a0 mm/page_alloc.c:4172 kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' alloc_pages_current+0xec/0x1e0 mm/mempolicy.c:2113 alloc_pages include/linux/gfp.h:520 [inline] __page_cache_alloc mm/filemap.c:871 [inline] __page_cache_alloc+0x248/0x3e0 mm/filemap.c:856 pagecache_get_page+0x17c/0x9e0 mm/filemap.c:1501 grab_cache_page_write_begin+0x74/0xa0 mm/filemap.c:2997 ext4_write_begin+0x214/0x1290 fs/ext4/inode.c:1288 kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' CPU: 1 PID: 16823 Comm: syz-executor.1 Not tainted 4.14.158-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] alloc_buffer_head+0x24/0xe0 fs/buffer.c:3425 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env alloc_page_buffers+0xb7/0x200 fs/buffer.c:874 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' create_empty_buffers+0x39/0x480 fs/buffer.c:1579 create_page_buffers+0x153/0x1c0 fs/buffer.c:1696 __block_write_begin_int+0x195/0x1100 fs/buffer.c:2006 __block_write_begin+0x31/0x40 fs/buffer.c:2077 ext4_write_begin+0x487/0x1290 fs/ext4/inode.c:1323 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): 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: 16839 Comm: syz-executor.1 Not tainted 4.14.158-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+0x47/0x780 mm/slab.c:3550 ext4_es_alloc_extent fs/ext4/extents_status.c:334 [inline] __es_insert_extent+0x26c/0xe60 fs/ext4/extents_status.c:673 ext4_es_insert_extent+0x1f0/0x590 fs/ext4/extents_status.c:727 ext4_ext_put_gap_in_cache+0xcb/0x110 fs/ext4/extents.c:2388 ext4_ext_map_blocks+0x1d4b/0x4fa0 fs/ext4/extents.c:4394 ext4_map_blocks+0xd3c/0x17c0 fs/ext4/inode.c:558 _ext4_get_block+0x1a0/0x590 fs/ext4/inode.c:788 ext4_get_block+0x30/0x40 fs/ext4/inode.c:805 __block_write_begin_int+0x396/0x1100 fs/buffer.c:2027 __block_write_begin+0x31/0x40 fs/buffer.c:2077 ext4_write_begin+0x487/0x1290 fs/ext4/inode.c:1323 ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): 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: 16854 Comm: syz-executor.1 Not tainted 4.14.158-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+0x47/0x780 mm/slab.c:3550 ext4_es_alloc_extent fs/ext4/extents_status.c:334 [inline] __es_insert_extent+0x26c/0xe60 fs/ext4/extents_status.c:673 ext4_es_insert_extent+0x1f0/0x590 fs/ext4/extents_status.c:727 ext4_ext_put_gap_in_cache+0xcb/0x110 fs/ext4/extents.c:2388 ext4_ext_map_blocks+0x1d4b/0x4fa0 fs/ext4/extents.c:4394 kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' ext4_map_blocks+0xd3c/0x17c0 fs/ext4/inode.c:558 _ext4_get_block+0x1a0/0x590 fs/ext4/inode.c:788 ext4_get_block+0x30/0x40 fs/ext4/inode.c:805 kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env __block_write_begin_int+0x396/0x1100 fs/buffer.c:2027 kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' __block_write_begin+0x31/0x40 fs/buffer.c:2077 ext4_write_begin+0x487/0x1290 fs/ext4/inode.c:1323 ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' CPU: 0 PID: 16894 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env 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 kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] ext4_find_extent+0x709/0x960 fs/ext4/extents.c:900 ext4_ext_map_blocks+0x1a3/0x4fa0 fs/ext4/extents.c:4311 ext4_map_blocks+0x881/0x17c0 fs/ext4/inode.c:635 _ext4_get_block+0x1a0/0x590 fs/ext4/inode.c:788 ext4_get_block+0x30/0x40 fs/ext4/inode.c:805 __block_write_begin_int+0x396/0x1100 fs/buffer.c:2027 __block_write_begin+0x31/0x40 fs/buffer.c:2077 ext4_write_begin+0x487/0x1290 fs/ext4/inode.c:1323 ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' CPU: 0 PID: 16921 Comm: syz-executor.1 Not tainted 4.14.158-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] ext4_mb_new_blocks+0x513/0x3b30 fs/ext4/mballoc.c:4554 ext4_ext_map_blocks+0x26cd/0x4fa0 fs/ext4/extents.c:4492 ext4_map_blocks+0x881/0x17c0 fs/ext4/inode.c:635 _ext4_get_block+0x1a0/0x590 fs/ext4/inode.c:788 ext4_get_block+0x30/0x40 fs/ext4/inode.c:805 __block_write_begin_int+0x396/0x1100 fs/buffer.c:2027 __block_write_begin+0x31/0x40 fs/buffer.c:2077 ext4_write_begin+0x487/0x1290 fs/ext4/inode.c:1323 ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env 9pnet: Insufficient options for proto=fd kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' 9pnet: Insufficient options for proto=fd kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16958 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' 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+0x47/0x780 mm/slab.c:3550 ext4_es_alloc_extent fs/ext4/extents_status.c:334 [inline] __es_insert_extent+0x26c/0xe60 fs/ext4/extents_status.c:673 ext4_es_insert_extent+0x1f0/0x590 fs/ext4/extents_status.c:727 ext4_map_blocks+0xab1/0x17c0 fs/ext4/inode.c:706 kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env _ext4_get_block+0x1a0/0x590 fs/ext4/inode.c:788 ext4_get_block+0x30/0x40 fs/ext4/inode.c:805 __block_write_begin_int+0x396/0x1100 fs/buffer.c:2027 kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' __block_write_begin+0x31/0x40 fs/buffer.c:2077 ext4_write_begin+0x487/0x1290 fs/ext4/inode.c:1323 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env ext4_da_write_begin+0x4fb/0xea0 fs/ext4/inode.c:3037 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' pagecache_write_begin+0x84/0xc0 mm/filemap.c:2891 __page_symlink+0x16e/0x1e0 fs/namei.c:4852 ext4_symlink+0x6eb/0xa80 fs/ext4/namei.c:3201 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' CPU: 0 PID: 16980 Comm: syz-executor.1 Not tainted 4.14.158-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+0x47/0x780 mm/slab.c:3550 mempool_alloc_slab+0x47/0x60 mm/mempool.c:450 mempool_alloc+0x138/0x300 mm/mempool.c:330 bio_alloc_bioset+0x368/0x680 block/bio.c:486 bio_alloc include/linux/bio.h:422 [inline] submit_bh_wbc+0xf6/0x720 fs/buffer.c:3126 submit_bh fs/buffer.c:3158 [inline] __sync_dirty_buffer fs/buffer.c:3244 [inline] __sync_dirty_buffer+0xcf/0x260 fs/buffer.c:3235 sync_dirty_buffer+0x1b/0x20 fs/buffer.c:3257 __ext4_handle_dirty_metadata+0x16e/0x470 fs/ext4/ext4_jbd2.c:300 ext4_handle_dirty_dirent_node+0x35b/0x480 fs/ext4/namei.c:401 add_dirent_to_buf+0x375/0x5c0 fs/ext4/namei.c:1918 ext4_add_entry+0x4d1/0xa20 fs/ext4/namei.c:2114 ext4_add_nondir+0x28/0x80 fs/ext4/namei.c:2444 ext4_symlink+0x3ff/0xa80 fs/ext4/namei.c:3232 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' CPU: 1 PID: 16989 Comm: syz-executor.1 Not tainted 4.14.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env 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+0x56/0x780 mm/slab.c:3640 create_task_io_context+0x31/0x3d0 block/blk-ioc.c:271 create_io_context block/blk.h:323 [inline] generic_make_request_checks+0x1505/0x1ac0 block/blk-core.c:2125 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' generic_make_request+0x7d/0xa40 block/blk-core.c:2183 kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env submit_bio+0x1a5/0x3f0 block/blk-core.c:2301 submit_bh_wbc+0x550/0x720 fs/buffer.c:3152 submit_bh fs/buffer.c:3158 [inline] __sync_dirty_buffer fs/buffer.c:3244 [inline] __sync_dirty_buffer+0xcf/0x260 fs/buffer.c:3235 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' sync_dirty_buffer+0x1b/0x20 fs/buffer.c:3257 __ext4_handle_dirty_metadata+0x16e/0x470 fs/ext4/ext4_jbd2.c:300 ext4_handle_dirty_dirent_node+0x35b/0x480 fs/ext4/namei.c:401 add_dirent_to_buf+0x375/0x5c0 fs/ext4/namei.c:1918 ext4_add_entry+0x4d1/0xa20 fs/ext4/namei.c:2114 9pnet: Could not find request transport: fd4rfdno=0x000000000000000a ext4_add_nondir+0x28/0x80 fs/ext4/namei.c:2444 ext4_symlink+0x3ff/0xa80 fs/ext4/namei.c:3232 vfs_symlink fs/namei.c:4153 [inline] vfs_symlink+0x322/0x560 fs/namei.c:4139 SYSC_symlinkat fs/namei.c:4180 [inline] SyS_symlinkat fs/namei.c:4160 [inline] SYSC_symlink fs/namei.c:4193 [inline] SyS_symlink+0x193/0x210 fs/namei.c:4191 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a6f9 RSP: 002b:00007f5d50c13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f5d50c13c90 RCX: 000000000045a6f9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d50c146d4 R13: 00000000004ca8dd R14: 00000000004e3c50 R15: 0000000000000003 kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' net_ratelimit: 18 callbacks suppressed 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' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_0 kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' 9pnet: Could not find request transport: fd4rfdno=0x000000000000000a kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd 9pnet: Insufficient options for proto=fd kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 9pnet: Could not find request transport: fd4rfdno=0x000000000000000a kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (ffff8880a40fb5a0): kobject_uevent_env kobject: 'loop3' (ffff8880a40fb5a0): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' 9pnet: Could not find request transport: fd4rfdno=0x000000000000000a kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (ffff8880a4159620): kobject_uevent_env kobject: 'loop4' (ffff8880a4159620): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (ffff8880a40e1520): kobject_uevent_env kobject: 'loop2' (ffff8880a40e1520): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (ffff8880a4074c20): kobject_uevent_env kobject: 'loop1' (ffff8880a4074c20): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (ffff8880a4010320): kobject_uevent_env kobject: 'loop0' (ffff8880a4010320): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (ffff8880a41c16a0): kobject_uevent_env kobject: 'loop5' (ffff8880a41c16a0): fill_kobj_path: path = '/devices/virtual/block/loop5'