diff options
Diffstat (limited to 'results/scraper/launchpad-without-comments/1918917')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1918917 | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1918917 b/results/scraper/launchpad-without-comments/1918917 new file mode 100644 index 00000000..0d38ce50 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1918917 @@ -0,0 +1,74 @@ +synchronous abort on accessing unused I/O ports on aarch64 + +version: QEMU emulator version 5.2.0 (Debian 1:5.2+dfsg-6) +command line: qemu-system-aarch64 \ + -machine virt,virtualization=on,graphics=on,usb=on -cpu cortex-a57 -smp 2 -m 2G \ + -device virtio-blk-device,drive=hd0 \ + -drive if=none,format=raw,id=hd0,file=buildroot \ + -kernel arch/arm64/boot/Image \ + -nographic \ + -device virtio-rng-pci \ + -net user,host=10.0.2.10,hostfwd=tcp::10022-:22 -net nic,model=virtio-net-pci \ + -append "root=/dev/vda earlyprintk=serial console=ttyAMA0 earlycon" + +I am observing "synchronous external abort" when kernel tries to access unused I/O ports (see below), while hardware/qemu should return 0xffffffff in this case. + +This is factored out of this LKML thread where Arnd describes it in more details: +https://lore.kernel<email address hidden>/ + +Internal error: synchronous external abort: 96000050 [#1] PREEMPT SMP +Dumping ftrace buffer: + (ftrace buffer empty) +Modules linked in: +CPU: 0 PID: 11231 Comm: syz-executor.1 Not tainted 5.12.0-rc2-syzkaller-00302-g28806e4d9b97 #0 +Hardware name: linux,dummy-virt (DT) +pstate: 80000085 (Nzcv daIf -PAN -UAO -TCO BTYPE=--) +pc : __raw_writeb arch/arm64/include/asm/io.h:27 [inline] +pc : _outb include/asm-generic/io.h:501 [inline] +pc : logic_outb+0x3c/0x114 lib/logic_pio.c:302 +lr : io_serial_out+0x80/0xc0 drivers/tty/serial/8250/8250_port.c:453 +sp : ffff000015f0f980 +x29: ffff000015f0f980 x28: ffff80001de0005d +x27: ffff80001601df00 x26: ffff000015f0fc90 +x25: ffff80001de00000 x24: ffff80001de00000 +x23: ffff00000e27f600 x22: 0000000000000000 +x21: 0000000000000002 x20: 0000000000000002 +x19: fffffbfffe800001 x18: ffff00006a678b48 +x17: 0000000000000000 x16: 0000000000000000 +x15: ffff8000197be810 x14: 1fffe00002be1f0e +x13: 1fffe00002be1e90 x12: ffff600002be1f39 +x11: 1fffe00002be1f38 x10: ffff600002be1f38 +x9 : dfff800000000000 x8 : 0000000000000003 +x7 : 0000000000000001 x6 : 0000000000000004 +x5 : ffff000015f0f9c0 x4 : dfff800000000000 +x3 : 0000000000000001 x2 : 1ffff00003494e6b +x1 : fffffbfffe800000 x0 : 0000000000ffbffe +Call trace: + _outb include/asm-generic/io.h:501 [inline] + logic_outb+0x3c/0x114 lib/logic_pio.c:302 + io_serial_out+0x80/0xc0 drivers/tty/serial/8250/8250_port.c:453 + serial_out drivers/tty/serial/8250/8250.h:118 [inline] + serial8250_set_THRI drivers/tty/serial/8250/8250.h:138 [inline] + __start_tx drivers/tty/serial/8250/8250_port.c:1566 [inline] + serial8250_start_tx+0x338/0x6c0 drivers/tty/serial/8250/8250_port.c:1666 + __uart_start.isra.0+0x10c/0x154 drivers/tty/serial/serial_core.c:127 + uart_start+0xe0/0x210 drivers/tty/serial/serial_core.c:137 + uart_flush_chars+0x10/0x20 drivers/tty/serial/serial_core.c:573 + __receive_buf drivers/tty/n_tty.c:1646 [inline] + n_tty_receive_buf_common+0x588/0x22c0 drivers/tty/n_tty.c:1739 + n_tty_receive_buf+0x14/0x20 drivers/tty/n_tty.c:1768 + tiocsti drivers/tty/tty_io.c:2317 [inline] + tty_ioctl+0xed0/0x1aec drivers/tty/tty_io.c:2718 + vfs_ioctl fs/ioctl.c:48 [inline] + __do_sys_ioctl fs/ioctl.c:753 [inline] + __se_sys_ioctl fs/ioctl.c:739 [inline] + __arm64_sys_ioctl+0x120/0x18c fs/ioctl.c:739 + __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] + invoke_syscall arch/arm64/kernel/syscall.c:49 [inline] + el0_svc_common.constprop.0+0xf0/0x2c0 arch/arm64/kernel/syscall.c:129 + do_el0_svc+0xa4/0xd0 arch/arm64/kernel/syscall.c:168 + el0_svc+0x24/0x34 arch/arm64/kernel/entry-common.c:416 + el0_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:432 + el0_sync+0x170/0x180 arch/arm64/kernel/entry.S:699 +Code: d2bfd001 f2df7fe1 f2ffffe1 8b010273 (39000274) +---[ end trace 79cb47219936c254 ]--- \ No newline at end of file |