syzbot

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BUG: KMSAN: uninit-value in set_normalized_timespec64 kernel/time/time.c:492 [inline]
BUG: KMSAN: uninit-value in timespec64_add_safe+0x4b4/0x520 kernel/time/time.c:846
 set_normalized_timespec64 kernel/time/time.c:492 [inline]
 timespec64_add_safe+0x4b4/0x520 kernel/time/time.c:846
 ep_timeout_to_timespec fs/eventpoll.c:1874 [inline]
 __do_sys_epoll_wait fs/eventpoll.c:2473 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2467 [inline]
 __x64_sys_epoll_wait+0x1fa/0x3a0 fs/eventpoll.c:2467
 x64_sys_call+0x2ece/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:233
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable now.i.i.i created at:
 ep_timeout_to_timespec fs/eventpoll.c:1859 [inline]
 __do_sys_epoll_wait fs/eventpoll.c:2473 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2467 [inline]
 __x64_sys_epoll_wait+0xcf/0x3a0 fs/eventpoll.c:2467
 x64_sys_call+0x2ece/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:233

CPU: 0 UID: 0 PID: 4930 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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Kernel panic - not syncing: kmsan.panic set ...
CPU: 0 UID: 0 PID: 4930 Comm: udevd Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 __dump_stack+0x26/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x50/0x1c0 lib/dump_stack.c:120
 dump_stack+0x1e/0x25 lib/dump_stack.c:129
 vpanic+0x7b4/0x1430 kernel/panic.c:650
 panic+0x15d/0x160 kernel/panic.c:787
 kmsan_report+0x31a/0x320 mm/kmsan/report.c:218
 __msan_warning+0x1b/0x30 mm/kmsan/instrumentation.c:315
 set_normalized_timespec64 kernel/time/time.c:492 [inline]
 timespec64_add_safe+0x4b4/0x520 kernel/time/time.c:846
 ep_timeout_to_timespec fs/eventpoll.c:1874 [inline]
 __do_sys_epoll_wait fs/eventpoll.c:2473 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2467 [inline]
 __x64_sys_epoll_wait+0x1fa/0x3a0 fs/eventpoll.c:2467
 x64_sys_call+0x2ece/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:233
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb59e6a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffdcd917b30 EFLAGS: 00000202 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00007fb59eeab880 RCX: 00007fb59e6a7407
RDX: 0000000000000008 RSI: 00007ffdcd917c90 RDI: 000000000000000b
RBP: 0000000000000099 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000bb8 R11: 0000000000000202 R12: 0000000000000000
R13: 000055f6da0cc100 R14: 000055f7039c4e40 R15: 0000000000000000
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..