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KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (6)

Status: auto-obsoleted due to no activity on 2023/07/25 21:09
Subsystems: usb
[Documentation on labels]
First crash: 809d, last: 809d
▶ ▼ Similar bugs (11)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (4) usb 6 1 1064d 1064d 0/29 auto-obsoleted due to no activity on 2022/11/12 18:04
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (8) usb 6 4 505d 512d 0/29 auto-obsoleted due to no activity on 2024/05/23 21:51
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (12) usb 6 2 72d 122d 0/29 auto-obsoleted due to no activity on 2025/08/21 21:41
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl usb 6 1 1764d 1734d 0/29 auto-closed as invalid on 2020/12/21 11:58
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (3) usb 6 2 1254d 1284d 0/29 auto-closed as invalid on 2022/05/06 03:42
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (7) usb 6 2 572d 593d 0/29 auto-obsoleted due to no activity on 2024/03/18 17:20
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (2) usb 6 1 1384d 1384d 0/29 auto-closed as invalid on 2021/12/27 18:11
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (5) usb 6 1 872d 872d 0/29 auto-obsoleted due to no activity on 2023/05/23 16:35
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (10) usb 6 3 319d 364d 0/29 auto-obsoleted due to no activity on 2024/12/17 19:31
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (11) usb 6 2 226d 246d 0/29 auto-obsoleted due to no activity on 2025/03/19 22:59
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (9) usb 6 3 412d 458d 0/29 auto-obsoleted due to no activity on 2024/08/25 21:37

Sample crash report:
==================================================================
BUG: KCSAN: data-race in usbdev_ioctl / usbdev_ioctl

write to 0xffff8881035e4128 of 8 bytes by task 8119 on cpu 1:
 usbdev_do_ioctl drivers/usb/core/devio.c:2805 [inline]
 usbdev_ioctl+0x6bf/0x3eb0 drivers/usb/core/devio.c:2814
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:856
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

write to 0xffff8881035e4128 of 8 bytes by task 8124 on cpu 0:
 usbdev_do_ioctl drivers/usb/core/devio.c:2805 [inline]
 usbdev_ioctl+0x6bf/0x3eb0 drivers/usb/core/devio.c:2814
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:856
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000000350c58ed -> 0x00000000389fdfee

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8124 Comm: syz-executor.2 Not tainted 6.4.0-rc7-syzkaller-00019-g99ec1ed7c2ed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
==================================================================

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/20 21:05 upstream 99ec1ed7c2ed 79782afc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in usbdev_ioctl / usbdev_ioctl
* Struck through repros no longer work on HEAD.