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================================================================== BUG: KCSAN: data-race in io_submit_sqes / io_uring_poll read-write to 0xffff888126fad870 of 4 bytes by task 6103 on cpu 1: io_get_sqe io_uring/io_uring.c:2432 [inline] io_submit_sqes+0x23f/0x10a0 io_uring/io_uring.c:2483 __do_sys_io_uring_enter io_uring/io_uring.c:3668 [inline] __se_sys_io_uring_enter+0x1d1/0x17f0 io_uring/io_uring.c:3603 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3603 x64_sys_call+0x263/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:427 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 0xffff888126fad870 of 4 bytes by task 6096 on cpu 0: io_sqring_full io_uring/io_uring.h:291 [inline] io_uring_poll+0xcf/0x190 io_uring/io_uring.c:2991 vfs_poll include/linux/poll.h:84 [inline] __io_arm_poll_handler+0x229/0xf30 io_uring/poll.c:622 io_arm_poll_handler+0x3e6/0x590 io_uring/poll.c:758 io_queue_async+0x89/0x310 io_uring/io_uring.c:2089 io_queue_sqe io_uring/io_uring.c:2118 [inline] io_req_task_submit+0xff/0x110 io_uring/io_uring.c:1510 io_handle_tw_list+0x1ef/0x240 io_uring/io_uring.c:1198 tctx_task_work_run+0x6c/0x1b0 io_uring/io_uring.c:1270 tctx_task_work+0x40/0x80 io_uring/io_uring.c:1288 task_work_run+0x13a/0x1a0 kernel/task_work.c:180 get_signal+0xeee/0x1080 kernel/signal.c:2683 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x59/0x130 kernel/entry/common.c:218 do_syscall_64+0xda/0x1d0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00002264 -> 0x00002297 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6096 Comm: syz-executor.2 Not tainted 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/04/16 11:07 | upstream | 96fca68c4fbf | 0d592ce4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in io_submit_sqes / io_uring_poll |