On Tue, Nov 07, 2017 at 08:11:13AM -0800, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 36ef71cae353f88fd6e095e2aaa3e5953af1685d > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > C reproducer is attached > syzkaller reproducer is attached. See https://goo.gl/kgGztJ > for information about syzkaller reproducers > > > ------------[ cut here ]------------ > WARNING: CPU: 3 PID: 2986 at drivers/usb/core/urb.c:498 > usb_submit_urb+0xeb9/0x10f0 drivers/usb/core/urb.c:497 > Kernel panic - not syncing: panic_on_warn set ... > > CPU: 3 PID: 2986 Comm: syzkaller630695 Not tainted 4.14.0-rc5-next-20171018+ > #8 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > Call Trace: > __dump_stack lib/dump_stack.c:16 [inline] > dump_stack+0x194/0x257 lib/dump_stack.c:52 > panic+0x1e4/0x41c kernel/panic.c:183 > __warn+0x1c4/0x1e0 kernel/panic.c:546 > report_bug+0x211/0x2d0 lib/bug.c:183 > fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:177 > do_trap_no_signal arch/x86/kernel/traps.c:211 [inline] > do_trap+0x260/0x390 arch/x86/kernel/traps.c:260 > do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:297 > do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:310 > invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905 > RIP: 0010:usb_submit_urb+0xeb9/0x10f0 drivers/usb/core/urb.c:497 > RSP: 0018:ffff880039ddf3f0 EFLAGS: 00010286 > RAX: 0000000000000022 RBX: ffff88006ab64f00 RCX: 0000000000000000 > RDX: 0000000000000022 RSI: 1ffff100073bbe3e RDI: ffffed00073bbe72 > RBP: ffff880039ddf448 R08: 0000000000000001 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > R13: 0000000000000002 R14: ffff88006b5d72c0 R15: 000000000000007f > proc_do_submiturb+0x1f53/0x3860 drivers/usb/core/devio.c:1778 > proc_submiturb_compat+0x528/0x7e0 drivers/usb/core/devio.c:1999 > usbdev_do_ioctl+0x1632/0x3670 drivers/usb/core/devio.c:2475 > usbdev_ioctl+0x25/0x30 drivers/usb/core/devio.c:2552 > vfs_ioctl fs/ioctl.c:45 [inline] > do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:685 > SYSC_ioctl fs/ioctl.c:700 [inline] > SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 > entry_SYSCALL_64_fastpath+0x1f/0xbe > RIP: 0033:0x439089 > RSP: 002b:00007ffd7d8a88b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000439089 > RDX: 0000000020274ffa RSI: 00000000802c550a RDI: 0000000000000003 > RBP: 0000000000000082 R08: 00000000000000fb R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 > R13: 0000000000401ce0 R14: 0000000000401d70 R15: 0000000000000000 > Dumping ftrace buffer: > (ftrace buffer empty) > Kernel Offset: disabled > Rebooting in 86400 seconds.. No longer seeing this. It seems to have been fixed by commit 446f666da9f01, so telling syzbot so that it can start reporting similar bugs again: #syz fix: USB: usbfs: Filter flags passed in from user space - Eric -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
