UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed ttyprintk ttyprintk: tty_port_close_start: tty->count = 1 port count = 5 UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) ====================================================== WARNING: possible circular locking dependency detected 4.14.174-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/9301 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+0x2f0/0x600 kernel/printk/printk.c:1888 but task is already holding lock: (&(&port->lock)->rlock){-.-.}, at: [] tty_port_close_start.part.0+0x28/0x4c0 drivers/tty/tty_port.c:573 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&(&port->lock)->rlock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xbf kernel/locking/spinlock.c:160 tty_port_tty_get+0x1d/0x80 drivers/tty/tty_port.c:288 tty_port_default_wakeup+0x11/0x40 drivers/tty/tty_port.c:46 serial8250_tx_chars+0x400/0x9e0 drivers/tty/serial/8250/8250_port.c:1810 serial8250_handle_irq.part.0+0x1f8/0x240 drivers/tty/serial/8250/8250_port.c:1883 serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1869 [inline] serial8250_default_handle_irq+0x96/0x110 drivers/tty/serial/8250/8250_port.c:1899 serial8250_interrupt+0xe4/0x1a0 drivers/tty/serial/8250/8250_core.c:129 __handle_irq_event_percpu+0x125/0x7e0 kernel/irq/handle.c:147 handle_irq_event_percpu+0x66/0x120 kernel/irq/handle.c:187 handle_irq_event+0xa2/0x12d kernel/irq/handle.c:204 handle_edge_irq+0x215/0x810 kernel/irq/chip.c:770 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x35/0x50 arch/x86/kernel/irq_64.c:87 do_IRQ+0x93/0x1d0 arch/x86/kernel/irq.c:230 ret_from_intr+0x0/0x1e native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0x47/0x370 arch/x86/kernel/process.c:566 cpuidle_idle_call kernel/sched/idle.c:156 [inline] do_idle+0x250/0x3c0 kernel/sched/idle.c:246 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:351 start_kernel+0x659/0x676 init/main.c:708 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 -> #1 (&port_lock_key){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xbf kernel/locking/spinlock.c:160 serial8250_console_write+0x6c1/0x8e0 drivers/tty/serial/8250/8250_port.c:3236 call_console_drivers kernel/printk/printk.c:1725 [inline] console_unlock+0x9b2/0xec0 kernel/printk/printk.c:2397 vprintk_emit kernel/printk/printk.c:1923 [inline] vprintk_emit+0x1f8/0x600 kernel/printk/printk.c:1888 vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 register_console+0x5ec/0x9a0 kernel/printk/printk.c:2716 univ8250_console_init+0x2f/0x3a drivers/tty/serial/8250/8250_core.c:691 console_init+0x46/0x53 kernel/printk/printk.c:2797 start_kernel+0x437/0x676 init/main.c:634 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 -> #0 (console_owner){-.-.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3994 console_trylock_spinning kernel/printk/printk.c:1679 [inline] vprintk_emit kernel/printk/printk.c:1922 [inline] vprintk_emit+0x32d/0x600 kernel/printk/printk.c:1888 vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 tty_port_close_start.part.0+0x46f/0x4c0 drivers/tty/tty_port.c:575 tty_port_close_start drivers/tty/tty_port.c:647 [inline] tty_port_close+0x39/0xc0 drivers/tty/tty_port.c:640 tty_release+0x372/0xd60 drivers/tty/tty_io.c:1670 __fput+0x25f/0x790 fs/file_table.c:210 task_work_run+0x113/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1d6/0x220 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+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 *** 2 locks held by syz-executor.3/9301: #0: (&tty->legacy_mutex){+.+.}, at: [] tty_lock+0x5f/0x70 drivers/tty/tty_mutex.c:19 #1: (&(&port->lock)->rlock){-.-.}, at: [] tty_port_close_start.part.0+0x28/0x4c0 drivers/tty/tty_port.c:573 stack backtrace: CPU: 0 PID: 9301 Comm: syz-executor.3 Not tainted 4.14.174-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+0x13e/0x194 lib/dump_stack.c:58 print_circular_bug.isra.0.cold+0x1c4/0x282 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+0x170/0x3f0 kernel/locking/lockdep.c:3994 console_trylock_spinning kernel/printk/printk.c:1679 [inline] vprintk_emit kernel/printk/printk.c:1922 [inline] vprintk_emit+0x32d/0x600 kernel/printk/printk.c:1888 vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401 printk+0x9e/0xbc kernel/printk/printk.c:1996 tty_port_close_start.part.0+0x46f/0x4c0 drivers/tty/tty_port.c:575 tty_port_close_start drivers/tty/tty_port.c:647 [inline] tty_port_close+0x39/0xc0 drivers/tty/tty_port.c:640 tty_release+0x372/0xd60 drivers/tty/tty_io.c:1670 __fput+0x25f/0x790 fs/file_table.c:210 task_work_run+0x113/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1d6/0x220 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4163e1 RSP: 002b:00007ffc3d96f440 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004163e1 RDX: 0000000000000000 RSI: 0000000000001bb6 RDI: 0000000000000004 RBP: 0000000000000001 R08: 00000000f6c41bb6 R09: 00000000f6c41bba R10: 00007ffc3d96f520 R11: 0000000000000293 R12: 000000000076c900 R13: 000000000076c900 R14: 000000000003d157 R15: 000000000076bfac netlink: 87 bytes leftover after parsing attributes in process `syz-executor.3'. UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 netlink: 87 bytes leftover after parsing attributes in process `syz-executor.3'. UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 kauditd_printk_skb: 3 callbacks suppressed audit: type=1400 audit(1584809484.384:85): avc: denied { map } for pid=9315 comm="syz-executor.3" path="socket:[35580]" dev="sockfs" ino=35580 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=rawip_socket permissive=1 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found netlink: 44275 bytes leftover after parsing attributes in process `syz-executor.1'. UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 audit: type=1804 audit(1584809486.654:86): pid=9429 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir606373587/syzkaller.OP1EIt/61/bus" dev="sda1" ino=16578 res=1 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) audit: type=1804 audit(1584809487.574:87): pid=9485 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir606373587/syzkaller.OP1EIt/62/bus" dev="sda1" ino=16751 res=1 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed nbd_handle_cmd: 63 callbacks suppressed block nbd5: Attempted send on invalid socket block nbd5: Attempted send on invalid socket print_req_error: 64 callbacks suppressed print_req_error: I/O error, dev nbd5, sector 512 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 1024 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 64 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 1024 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 audit: type=1804 audit(1584809488.574:88): pid=9542 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir606373587/syzkaller.OP1EIt/63/bus" dev="sda1" ino=16777 res=1 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 2048 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 64 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 2048 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 4096 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 64 print_req_error: I/O error, dev nbd5, sector 256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 audit: type=1804 audit(1584809489.654:89): pid=9603 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir606373587/syzkaller.OP1EIt/64/bus" dev="sda1" ino=16789 res=1 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed audit: type=1804 audit(1584809490.744:90): pid=9663 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir606373587/syzkaller.OP1EIt/65/bus" dev="sda1" ino=16790 res=1 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd0): udf_fill_super: No partition found (1) UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd0): udf_fill_super: No partition found (1) UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd0): udf_fill_super: No partition found (1) UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd0): udf_fill_super: No partition found (1) UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd5): udf_fill_super: No partition found (1) UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed nbd_handle_cmd: 113 callbacks suppressed block nbd0: Attempted send on invalid socket print_req_error: 112 callbacks suppressed print_req_error: I/O error, dev nbd0, sector 64 block nbd5: Attempted send on invalid socket block nbd0: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 64 print_req_error: I/O error, dev nbd0, sector 1024 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 256 block nbd0: Attempted send on invalid socket UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 print_req_error: I/O error, dev nbd0, sector 2048 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 512 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found audit: type=1804 audit(1584809493.604:91): pid=9851 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.4" name="/root/syzkaller-testdir771750525/syzkaller.VuYwPw/101/bus" dev="sda1" ino=16824 res=1 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 64 block nbd5: Attempted send on invalid socket print_req_error: I/O error, dev nbd5, sector 512 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 block nbd0: Attempted send on invalid socket print_req_error: I/O error, dev nbd0, sector 64 block nbd0: Attempted send on invalid socket print_req_error: I/O error, dev nbd0, sector 2048 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device nbd0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device nbd0): udf_load_vrs: No anchor found UDF-fs: error (device nbd5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device nbd5): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device nbd0): udf_fill_super: No partition found (1)