BUG: KMSAN: uninit-value in user_mode arch/x86/include/asm/ptrace.h:136 [inline] BUG: KMSAN: uninit-value in irqentry_enter+0x9d/0xd0 kernel/entry/common.c:326 user_mode arch/x86/include/asm/ptrace.h:136 [inline] irqentry_enter+0x9d/0xd0 kernel/entry/common.c:326 sysvec_reschedule_ipi+0x4b/0x330 arch/x86/kernel/smp.c:225 asm_sysvec_reschedule_ipi+0x12/0x20 arch/x86/include/asm/idtentry.h:672 kmsan_internal_is_module_addr+0xe/0x20 mm/kmsan/core.c:421 kmsan_get_metadata+0x35/0x180 mm/kmsan/shadow.c:195 kmsan_get_shadow_origin_ptr+0x90/0xc0 mm/kmsan/shadow.c:161 __msan_metadata_ptr_for_store_8+0x13/0x20 mm/kmsan/instrumentation.c:55 update_stack_state+0x87c/0xa60 arch/x86/kernel/unwind_frame.c:243 unwind_next_frame+0x783/0xe80 arch/x86/kernel/unwind_frame.c:305 arch_stack_walk+0x321/0x3c0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:121 kmsan_save_stack_with_flags mm/kmsan/core.c:78 [inline] kmsan_internal_chain_origin+0xa0/0x110 mm/kmsan/core.c:213 kmsan_memmove_metadata+0x203/0x270 mm/kmsan/core.c:162 __msan_memcpy+0x5e/0x90 mm/kmsan/instrumentation.c:111 sock_write_iter+0x109/0x680 net/socket.c:988 call_write_iter include/linux/fs.h:2114 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0x1083/0x1b00 fs/read_write.c:605 ksys_write+0x275/0x500 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0xdb/0x120 fs/read_write.c:667 do_syscall_64+0x13b/0x320 arch/x86/entry/common.c:53 entry_SYSCALL_64_after_hwframe+0x44/0xae Local variable ----tstimes.i.i@__x64_sys_utimensat created at: __do_sys_utimensat fs/utimes.c:150 [inline] __se_sys_utimensat fs/utimes.c:147 [inline] __x64_sys_utimensat+0xf9/0x480 fs/utimes.c:147 do_syscall_64+0x13b/0x320 arch/x86/entry/common.c:53 =====================================================