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================================================================== BUG: KCSAN: data-race in __kernel_write_iter / set_task_ioprio write to 0xffff88810a569938 of 8 bytes by task 14875 on cpu 1: set_task_ioprio+0x240/0x260 block/blk-ioc.c:287 __do_sys_ioprio_set block/ioprio.c:125 [inline] __se_sys_ioprio_set+0x246/0x580 block/ioprio.c:69 __x64_sys_ioprio_set+0x43/0x50 block/ioprio.c:69 x64_sys_call+0x2bcf/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:252 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 read to 0xffff88810a569938 of 8 bytes by task 14870 on cpu 0: __get_task_ioprio include/linux/ioprio.h:59 [inline] get_current_ioprio include/linux/ioprio.h:83 [inline] init_sync_kiocb include/linux/fs.h:2345 [inline] __kernel_write_iter+0xe8/0x4e0 fs/read_write.c:614 dump_emit_page fs/coredump.c:884 [inline] dump_user_range+0x3a7/0x550 fs/coredump.c:945 elf_core_dump+0x1b66/0x1c60 fs/binfmt_elf.c:2121 do_coredump+0x1736/0x1ce0 fs/coredump.c:758 get_signal+0xdc0/0x1070 kernel/signal.c:2903 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] irqentry_exit_to_user_mode+0x9a/0x130 kernel/entry/common.c:231 irqentry_exit+0x12/0x50 kernel/entry/common.c:334 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 value changed: 0x0000000000000000 -> 0xffff88812d92dfe0 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14870 Comm: syz.0.4134 Tainted: G W 6.12.0-rc7-syzkaller-00042-gf1b785f4c787 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/11/13 19:06 | upstream | f1b785f4c787 | bb3f8425 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __kernel_write_iter / set_task_ioprio | ||
2024/10/22 19:03 | upstream | d12937763990 | a93682b3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __kernel_write_iter / set_task_ioprio |