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KCSAN: data-race in mon_reader_del / usb_hcd_submit_urb (2)

Status: auto-obsoleted due to no activity on 2024/06/15 17:54
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+46a6fc9d5cdc8652118f@syzkaller.appspotmail.com
First crash: 42d, last: 37d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in mon_reader_del / usb_hcd_submit_urb usb 1 418d 418d 0/27 auto-obsoleted due to no activity on 2023/06/01 00:30

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

write to 0xffff88810014e088 of 4 bytes by task 321 on cpu 0:
 mon_stop drivers/usb/mon/mon_main.c:166 [inline]
 mon_reader_del+0x1ba/0x260 drivers/usb/mon/mon_main.c:73
 mon_bin_release+0x6c/0x130 drivers/usb/mon/mon_bin.c:793
 __fput+0x2c1/0x660 fs/file_table.c:422
 __fput_sync+0x44/0x60 fs/file_table.c:507
 __do_sys_close fs/open.c:1556 [inline]
 __se_sys_close+0x101/0x1b0 fs/open.c:1541
 __x64_sys_close+0x1f/0x30 fs/open.c:1541
 x64_sys_call+0x25b9/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff88810014e088 of 4 bytes by task 370 on cpu 1:
 usbmon_urb_submit include/linux/usb/hcd.h:723 [inline]
 usb_hcd_submit_urb+0x86/0x1510 drivers/usb/core/hcd.c:1518
 usb_submit_urb+0xb12/0xbc0 drivers/usb/core/urb.c:581
 usb_start_wait_urb+0x91/0x190 drivers/usb/core/message.c:59
 usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
 usb_control_msg+0x182/0x240 drivers/usb/core/message.c:154
 get_port_status drivers/usb/core/hub.c:604 [inline]
 hub_ext_port_status+0xbf/0x480 drivers/usb/core/hub.c:621
 usb_hub_port_status drivers/usb/core/hub.c:671 [inline]
 hub_activate+0x4c8/0xf30 drivers/usb/core/hub.c:1181
 hub_resume+0x48/0x1e0 drivers/usb/core/hub.c:4006
 usb_resume_interface drivers/usb/core/driver.c:1365 [inline]
 usb_resume_both+0x3ed/0x5b0 drivers/usb/core/driver.c:1525
 usb_runtime_resume+0x21/0x30 drivers/usb/core/driver.c:1979
 __rpm_callback+0x299/0x720 drivers/base/power/runtime.c:394
 rpm_callback drivers/base/power/runtime.c:448 [inline]
 rpm_resume+0x8e6/0xd00 drivers/base/power/runtime.c:914
 __pm_runtime_resume+0xdc/0x100 drivers/base/power/runtime.c:1172
 pm_runtime_resume_and_get include/linux/pm_runtime.h:430 [inline]
 usb_autoresume_device+0x25/0xd0 drivers/usb/core/driver.c:1713
 usbdev_open+0xfe/0x480 drivers/usb/core/devio.c:1055
 chrdev_open+0x323/0x3a0 fs/char_dev.c:414
 do_dentry_open+0x63c/0xbe0 fs/open.c:955
 vfs_open+0x4a/0x60 fs/open.c:1089
 do_open fs/namei.c:3642 [inline]
 path_openat+0x18ba/0x1d80 fs/namei.c:3799
 do_filp_open+0xf7/0x200 fs/namei.c:3826
 do_sys_openat2+0xab/0x120 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]
 __x64_sys_openat+0xf3/0x120 fs/open.c:1432
 x64_sys_call+0x2cad/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000001 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 370 Comm: syz-executor.3 Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
==================================================================
usb usb7: Requested nonsensical USBDEVFS_URB_ZERO_PACKET.

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/11 17:53 upstream cf87f46fd34d 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mon_reader_del / usb_hcd_submit_urb
2024/05/07 06:05 upstream dccb07f2914c fa7a5cf0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in mon_reader_del / usb_hcd_submit_urb
* Struck through repros no longer work on HEAD.