================================================================== BUG: KCSAN: data-race in kimage_alloc_page / zap_other_threads write to 0xffff8880928ed738 of 8 bytes by task 22939 on cpu 0: sigaddset include/linux/signal.h:66 [inline] zap_other_threads+0x116/0x1e0 kernel/signal.c:1361 do_group_exit+0x146/0x180 kernel/exit.c:898 __do_sys_exit_group+0xb/0x10 kernel/exit.c:914 __se_sys_exit_group+0x5/0x10 kernel/exit.c:912 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:912 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880928ed738 of 8 bytes by task 22943 on cpu 1: sigismember include/linux/signal.h:84 [inline] __fatal_signal_pending include/linux/sched/signal.h:363 [inline] fatal_signal_pending include/linux/sched/signal.h:368 [inline] kimage_alloc_pages kernel/kexec_core.c:303 [inline] kimage_alloc_page+0x15d/0x7c0 kernel/kexec_core.c:725 kimage_load_normal_segment kernel/kexec_core.c:808 [inline] kimage_load_segment+0x4d0/0x7f0 kernel/kexec_core.c:925 do_kexec_load+0x386/0x480 kernel/kexec.c:155 __do_sys_kexec_load kernel/kexec.c:261 [inline] __se_sys_kexec_load+0x148/0x180 kernel/kexec.c:236 __x64_sys_kexec_load+0x51/0x60 kernel/kexec.c:236 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 22943 Comm: syz-executor.5 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================