=====================================================
BUG: KMSAN: kernel-infoleak in rseq_exit_user_update include/linux/rseq_entry.h:627 [inline]
BUG: KMSAN: kernel-infoleak in __rseq_exit_to_user_mode_restart include/linux/rseq_entry.h:675 [inline]
BUG: KMSAN: kernel-infoleak in rseq_exit_to_user_mode_restart include/linux/rseq_entry.h:704 [inline]
BUG: KMSAN: kernel-infoleak in exit_to_user_mode_loop kernel/entry/common.c:103 [inline]
BUG: KMSAN: kernel-infoleak in __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
BUG: KMSAN: kernel-infoleak in irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:244 [inline]
BUG: KMSAN: kernel-infoleak in irqentry_exit_to_user_mode include/linux/irq-entry-common.h:315 [inline]
BUG: KMSAN: kernel-infoleak in irqentry_exit+0x34c/0xa60 kernel/entry/common.c:165
 rseq_exit_user_update include/linux/rseq_entry.h:627 [inline]
 __rseq_exit_to_user_mode_restart include/linux/rseq_entry.h:675 [inline]
 rseq_exit_to_user_mode_restart include/linux/rseq_entry.h:704 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:103 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:244 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:315 [inline]
 irqentry_exit+0x34c/0xa60 kernel/entry/common.c:165
 exc_page_fault+0x7e/0xb0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:595

Local variable end_time.i.i created at:
 __do_sys_poll fs/select.c:1063 [inline]
 __se_sys_poll fs/select.c:1060 [inline]
 __x64_sys_poll+0x87/0x540 fs/select.c:1060
 x64_sys_call+0x3232/0x3ed0 arch/x86/include/generated/asm/syscalls_64.h:8

Bytes 0-3 of 4 are uninitialized
Memory access of size 4 starts at ffff88811b913e8c
Data copied to user address 00007f4272f9badc

CPU: 0 UID: 0 PID: 4928 Comm: S02sysctl Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
=====================================================