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================================================================== BUG: KCSAN: data-race in __usb_hcd_giveback_urb / mon_reader_del write to 0xffff8881013cd088 of 4 bytes by task 17096 on cpu 0: mon_stop drivers/usb/mon/mon_main.c:166 [inline] mon_reader_del+0x1bd/0x260 drivers/usb/mon/mon_main.c:73 mon_bin_release+0x66/0x120 drivers/usb/mon/mon_bin.c:793 __fput+0x2ac/0x640 fs/file_table.c:464 ____fput+0x1c/0x30 fs/file_table.c:492 task_work_run+0x13a/0x1a0 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xa8/0x120 kernel/entry/common.c:218 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff8881013cd088 of 4 bytes by interrupt on cpu 1: usbmon_urb_complete include/linux/usb/hcd.h:737 [inline] __usb_hcd_giveback_urb+0x13d/0x370 drivers/usb/core/hcd.c:1635 usb_giveback_urb_bh+0x170/0x280 drivers/usb/core/hcd.c:1684 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0x4db/0xa20 kernel/workqueue.c:3317 bh_worker+0x21f/0x370 kernel/workqueue.c:3577 workqueue_softirq_action+0xaa/0xc0 kernel/workqueue.c:3604 tasklet_action+0xb/0x30 kernel/softirq.c:836 handle_softirqs+0xbf/0x280 kernel/softirq.c:561 run_ksoftirqd+0x1c/0x30 kernel/softirq.c:950 smpboot_thread_fn+0x31c/0x4c0 kernel/smpboot.c:164 kthread+0x4ae/0x520 kernel/kthread.c:464 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x00000001 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Tainted: G W 6.14.0-rc4-syzkaller-00015-g2a1944bff549 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/02/25 18:03 | upstream | 2a1944bff549 | d34966d1 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __usb_hcd_giveback_urb / mon_reader_del | ||
2025/01/30 10:11 | upstream | ebbb8be421ee | afe4eff5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __usb_hcd_giveback_urb / mon_reader_del | ||
2024/12/26 15:20 | upstream | 9b2ffa6148b1 | d3ccff63 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __usb_hcd_giveback_urb / mon_reader_del | ||
2024/11/20 23:48 | upstream | 8f7c8b88bda4 | 4fca1650 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __usb_hcd_giveback_urb / mon_reader_del |