syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KCSAN: data-race in __io_prep_rw / set_task_ioprio write to 0xffff8881036e3988 of 8 bytes by task 18251 on cpu 1: set_task_ioprio+0x24f/0x270 block/blk-ioc.c:280 __do_sys_ioprio_set block/ioprio.c:121 [inline] __se_sys_ioprio_set+0x250/0x5a0 block/ioprio.c:65 __x64_sys_ioprio_set+0x43/0x50 block/ioprio.c:65 x64_sys_call+0x1982/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:252 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff8881036e3988 of 8 bytes by task 18240 on cpu 0: __get_task_ioprio include/linux/ioprio.h:59 [inline] get_current_ioprio include/linux/ioprio.h:83 [inline] __io_prep_rw+0x210/0x660 io_uring/rw.c:278 io_prep_rw io_uring/rw.c:320 [inline] io_prep_rwv+0x33/0x230 io_uring/rw.c:342 io_prep_writev+0x22/0x30 io_uring/rw.c:362 io_init_req io_uring/io_uring.c:2139 [inline] io_submit_sqe io_uring/io_uring.c:2186 [inline] io_submit_sqes+0x5e5/0xfd0 io_uring/io_uring.c:2337 __do_sys_io_uring_enter io_uring/io_uring.c:3404 [inline] __se_sys_io_uring_enter+0x1c1/0x1b70 io_uring/io_uring.c:3338 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3338 x64_sys_call+0x28c8/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x0000000000000000 -> 0xffff8881170bafe0 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 18240 Comm: syz.2.5008 Not tainted 6.16.0-rc6-syzkaller-00121-g6832a9317eee #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/07/18 17:56 | upstream | 6832a9317eee | 88248e14 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __io_prep_rw / set_task_ioprio |