print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read ldm_validate_partition_table(): Disk read failed. print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read BUG: sleeping function called from invalid context at drivers/tty/vt/vt.c:2221 print_req_error: I/O error, dev loop0, sector 0 in_atomic(): 1, irqs_disabled(): 1, pid: 22866, name: syz-executor.4 3 locks held by syz-executor.4/22866: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&(&tty->flow_lock)->rlock){....}, at: [] spin_lock_irq include/linux/spinlock.h:342 [inline] #1: (&(&tty->flow_lock)->rlock){....}, at: [] n_tty_ioctl_helper+0xa0/0x350 drivers/tty/tty_ioctl.c:913 #2: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref+0x1b/0x80 drivers/tty/tty_ldisc.c:305 irq event stamp: 480 hardirqs last enabled at (479): [] do_syscall_64+0x4c/0x640 arch/x86/entry/common.c:280 hardirqs last disabled at (480): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:126 [inline] hardirqs last disabled at (480): [] _raw_spin_lock_irq+0x35/0x80 kernel/locking/spinlock.c:168 softirqs last enabled at (204): [] __do_softirq+0x6ab/0xa1d kernel/softirq.c:314 Buffer I/O error on dev loop0, logical block 0, async page read softirqs last disabled at (119): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (119): [] irq_exit+0x193/0x240 kernel/softirq.c:409 Preemption disabled at: [< (null)>] (null) CPU: 1 PID: 22866 Comm: syz-executor.4 Not tainted 4.14.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 ___might_sleep.cold+0x235/0x250 kernel/sched/core.c:6042 do_con_write+0xd0/0x19b0 drivers/tty/vt/vt.c:2221 con_write+0x21/0xa0 drivers/tty/vt/vt.c:2798 n_hdlc_send_frames+0x241/0x410 drivers/tty/n_hdlc.c:404 n_hdlc_tty_wakeup+0x95/0xb0 drivers/tty/n_hdlc.c:480 Dev loop0: unable to read RDB block 0 tty_wakeup+0xc3/0xf0 drivers/tty/tty_io.c:533 __start_tty drivers/tty/tty_io.c:805 [inline] __start_tty+0x10b/0x140 drivers/tty/tty_io.c:798 loop0: unable to read partition table n_tty_ioctl_helper+0x2f8/0x350 drivers/tty/tty_ioctl.c:916 n_hdlc_tty_ioctl+0xd4/0x300 drivers/tty/n_hdlc.c:784 tty_ioctl+0x5af/0x13c0 drivers/tty/tty_io.c:2670 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45c369 RSP: 002b:00007f38ae9cec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000017540 RCX: 000000000045c369 RDX: 0000000000000001 RSI: 000000000000540a RDI: 0000000000000006 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007ffe289e901f R14: 00007f38ae9cf9c0 R15: 000000000078bf0c ldm_validate_partition_table(): Disk read failed. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table ptrace attach of "/root/syz-executor.5"[22950] was attempted by "/root/syz-executor.5"[22953] ptrace attach of "/root/syz-executor.5"[22964] was attempted by "/root/syz-executor.5"[22966] ldm_validate_partition_table(): Disk read failed. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table ptrace attach of "/root/syz-executor.5"[22986] was attempted by "/root/syz-executor.5"[22989] nla_parse: 6 callbacks suppressed netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. ptrace attach of "/root/syz-executor.5"[23000] was attempted by "/root/syz-executor.5"[23003] netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. ptrace attach of "/root/syz-executor.5"[23022] was attempted by "/root/syz-executor.5"[23026] ldm_validate_partition_table(): Disk read failed. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table ptrace attach of "/root/syz-executor.5"[23056] was attempted by "/root/syz-executor.5"[23058] netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. ptrace attach of "/root/syz-executor.5"[23077] was attempted by "/root/syz-executor.5"[23079] netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. ptrace attach of "/root/syz-executor.5"[23094] was attempted by "/root/syz-executor.5"[23095] netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. ptrace attach of "/root/syz-executor.5"[23107] was attempted by "/root/syz-executor.5"[23109] ldm_validate_partition_table(): Disk read failed. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. print_req_error: 115 callbacks suppressed print_req_error: I/O error, dev loop0, sector 0 buffer_io_error: 115 callbacks suppressed Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read ldm_validate_partition_table(): Disk read failed. print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 0 Buffer I/O error on dev loop0, logical block 0, async page read Dev loop0: unable to read RDB block 0 loop0: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev loop0: unable to read RDB block 0 loop0: unable to read partition table nla_parse: 6 callbacks suppressed netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.