syzbot


KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (9)

Status: auto-obsoleted due to no activity on 2024/08/25 21:37
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+095272a53992297581c9@syzkaller.appspotmail.com
First crash: 120d, last: 74d
Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (4) usb 1 726d 726d 0/28 auto-obsoleted due to no activity on 2022/11/12 18:04
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (8) usb 4 168d 174d 0/28 auto-obsoleted due to no activity on 2024/05/23 21:51
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl usb 1 1427d 1396d 0/28 auto-closed as invalid on 2020/12/21 11:58
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (3) usb 2 916d 946d 0/28 auto-closed as invalid on 2022/05/06 03:42
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (7) usb 2 234d 255d 0/28 auto-obsoleted due to no activity on 2024/03/18 17:20
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (2) usb 1 1046d 1046d 0/28 auto-closed as invalid on 2021/12/27 18:11
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (5) usb 1 534d 534d 0/28 auto-obsoleted due to no activity on 2023/05/23 16:35
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (10) usb 2 3d13h 26d 0/28 moderation: reported on 2024/09/07 13:44
upstream KCSAN: data-race in usbdev_ioctl / usbdev_ioctl (6) usb 1 471d 471d 0/28 auto-obsoleted due to no activity on 2023/07/25 21:09

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

write to 0xffff888102cdd548 of 4 bytes by task 10235 on cpu 1:
 inode_set_atime_to_ts include/linux/fs.h:1569 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2815 [inline]
 usbdev_ioctl+0x6c2/0x3e10 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xd3/0x150 fs/ioctl.c:893
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893
 x64_sys_call+0x1688/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

write to 0xffff888102cdd548 of 4 bytes by task 10236 on cpu 0:
 inode_set_atime_to_ts include/linux/fs.h:1569 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2815 [inline]
 usbdev_ioctl+0x6c2/0x3e10 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xd3/0x150 fs/ioctl.c:893
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893
 x64_sys_call+0x1688/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x145d9a41 -> 0x1951266f

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 10236 Comm: syz.0.1877 Not tainted 6.10.0-syzkaller-10729-g3c3ff7be9729 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
==================================================================
__nla_validate_parse: 2 callbacks suppressed
netlink: 148 bytes leftover after parsing attributes in process `syz.0.1877'.

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/07/21 21:36 upstream 3c3ff7be9729 b88348e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in usbdev_ioctl / usbdev_ioctl
2024/06/18 17:34 upstream 3d54351c64e8 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in usbdev_ioctl / usbdev_ioctl
2024/06/05 05:04 upstream 32f88d65f01b e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in usbdev_ioctl / usbdev_ioctl
* Struck through repros no longer work on HEAD.