On 4/15/24 03:54, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: fec50db7033e Linux 6.9-rc3 > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci > console output: https://syzkaller.appspot.com/x/log.txt?x=14439bd3180000 > kernel config: https://syzkaller.appspot.com/x/.config?x=560f5db1d0b3f6d0 > dashboard link: https://syzkaller.appspot.com/bug?extid=b064b5599f18f7ebb1e1 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > userspace arch: arm64 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11c2c5bd180000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13cbbf5b180000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/ab4d6cae2eca/disk-fec50db7.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/b67542cc5860/vmlinux-fec50db7.xz > kernel image: https://storage.googleapis.com/syzbot-assets/3eeebb470b79/Image-fec50db7.gz.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+b064b5599f18f7ebb1e1@xxxxxxxxxxxxxxxxxxxxxxxxx > > ------------[ cut here ]------------ > usb 1-1: BOGUS urb xfer, pipe 1 != type 3 > WARNING: CPU: 0 PID: 6237 at drivers/usb/core/urb.c:504 usb_submit_urb+0xa00/0x1434 drivers/usb/core/urb.c:503 > Modules linked in: > CPU: 0 PID: 6237 Comm: udevd Not tainted 6.9.0-rc3-syzkaller-gfec50db7033e #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 > pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) > pc : usb_submit_urb+0xa00/0x1434 drivers/usb/core/urb.c:503 > lr : usb_submit_urb+0xa00/0x1434 drivers/usb/core/urb.c:503 > sp : ffff80009f8b73b0 > x29: ffff80009f8b73f0 x28: ffff0000d4fee000 x27: 0000000000000001 > x26: ffff80008c6919e8 x25: ffff0000c8bd1fe0 x24: ffff0000c1d45a50 > x23: ffff80008c698500 x22: dfff800000000000 x21: 0000000000000002 > x20: 0000000000000cc0 x19: ffff0000c1d45a00 x18: 0000000000000008 > x17: 0000000000000000 x16: ffff80008ae6d1bc x15: 0000000000000001 > x14: 1fffe000367b9a02 x13: 0000000000000000 x12: 0000000000000000 > x11: 0000000000000002 x10: 0000000000ff0100 x9 : b1573c5f9bab7600 > x8 : b1573c5f9bab7600 x7 : 0000000000000001 x6 : 0000000000000001 > x5 : ffff80009f8b6b18 x4 : ffff80008ef65000 x3 : ffff8000805e9200 > x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 > Call trace: > usb_submit_urb+0xa00/0x1434 drivers/usb/core/urb.c:503 > bcm5974_start_traffic+0xe0/0x154 drivers/input/mouse/bcm5974.c:799 > bcm5974_open+0x98/0x134 drivers/input/mouse/bcm5974.c:839 > input_open_device+0x170/0x29c drivers/input/input.c:654 > evdev_open_device drivers/input/evdev.c:400 [inline] > evdev_open+0x308/0x4b4 drivers/input/evdev.c:487 > chrdev_open+0x3c8/0x4dc fs/char_dev.c:414 > do_dentry_open+0x778/0x12b4 fs/open.c:955 > vfs_open+0x7c/0x90 fs/open.c:1089 > do_open fs/namei.c:3642 [inline] > path_openat+0x1f6c/0x2830 fs/namei.c:3799 > do_filp_open+0x1bc/0x3cc fs/namei.c:3826 > do_sys_openat2+0x124/0x1b8 fs/open.c:1406 > do_sys_open fs/open.c:1421 [inline] > __do_sys_openat fs/open.c:1437 [inline] > __se_sys_openat fs/open.c:1432 [inline] > __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 > __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] > invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 > el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 > do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 > el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 > el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 > el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 > irq event stamp: 5626 > hardirqs last enabled at (5625): [<ffff8000803749b0>] __up_console_sem kernel/printk/printk.c:341 [inline] > hardirqs last enabled at (5625): [<ffff8000803749b0>] __console_unlock kernel/printk/printk.c:2731 [inline] > hardirqs last enabled at (5625): [<ffff8000803749b0>] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3050 > hardirqs last disabled at (5626): [<ffff80008ae68608>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 > softirqs last enabled at (2362): [<ffff800080031848>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 > softirqs last disabled at (2360): [<ffff800080031814>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 > ---[ end trace 0000000000000000 ]--- > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup > This is a known bug in the bcm5974 driver that was fixed with commit 2b9c3eb32a69 ("Input: bcm5974 - check endpoint type before starting traffic"). The fix had to be reverted due to a more severe bug that was hidden by this one and caused a regression: the driver makes use of endpoints that belong to interfaces it did not bind to (see discussion here [1]). In a nutshell, any check to make sure that the endpoint belongs to a bound interface will fail. In order to apply the fix for the bug syzbot found again, the inteface/endpoint issue must be solved first, making sure that the driver binds to the right interfaces. Link: https://lore.kernel.org/87sf161jjc.wl-tiwai@xxxxxxx/ [1] Best regards, Javier Carrasco
