last executing test programs:

kernel console output (not intermixed with test programs):

[  134.883343][ T5540] =====================================================
[  134.890526][ T5540] BUG: KMSAN: kernel-infoleak in irqentry_exit+0x48b/0xa00
[  134.897822][ T5540]  irqentry_exit+0x48b/0xa00
[  134.902522][ T5540]  exc_page_fault+0x7e/0xb0
[  134.907133][ T5540]  asm_exc_page_fault+0x2b/0x30
[  134.912047][ T5540] 
[  134.914392][ T5540] Local variable end_time.i.i created at:
[  134.920133][ T5540]  __x64_sys_poll+0x87/0x540
[  134.924784][ T5540]  x64_sys_call+0x3130/0x3ea0
[  134.929537][ T5540] 
[  134.931874][ T5540] Bytes 0-3 of 4 are uninitialized
[  134.937011][ T5540] Memory access of size 4 starts at ffff88811b6d7e88
[  134.943718][ T5540] Data copied to user address 00007f573bb9dac0
[  134.949892][ T5540] 
[  134.952273][ T5540] CPU: 0 UID: 0 PID: 5540 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(lazy) 
[  134.962056][ T5540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[  134.972162][ T5540] =====================================================
[  134.979123][ T5540] Disabling lock debugging due to kernel taint
[  134.985306][ T5540] Kernel panic - not syncing: kmsan.panic set ...
[  134.991767][ T5540] CPU: 0 UID: 0 PID: 5540 Comm: dhcpcd-run-hook Tainted: G    B               syzkaller #0 PREEMPT(lazy) 
[  135.003138][ T5540] Tainted: [B]=BAD_PAGE
[  135.007319][ T5540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[  135.017432][ T5540] Call Trace:
[  135.020767][ T5540]  <TASK>
[  135.023751][ T5540]  __dump_stack+0x26/0x30
[  135.028171][ T5540]  dump_stack_lvl+0x50/0x1c0
[  135.032852][ T5540]  ? dump_stack+0x12/0x25
[  135.037303][ T5540]  dump_stack+0x1e/0x25
[  135.041526][ T5540]  vpanic+0x7b4/0x1430
[  135.045693][ T5540]  panic+0x15d/0x160
[  135.049719][ T5540]  kmsan_report+0x31a/0x320
[  135.054321][ T5540]  ? kmsan_get_metadata+0xf1/0x160
[  135.059529][ T5540]  ? kmsan_internal_check_memory+0x1e8/0x240
[  135.065593][ T5540]  ? kmsan_copy_to_user+0xef/0x190
[  135.070794][ T5540]  ? irqentry_exit+0x48b/0xa00
[  135.075651][ T5540]  ? exc_page_fault+0x7e/0xb0
[  135.080446][ T5540]  ? asm_exc_page_fault+0x2b/0x30
[  135.085553][ T5540]  ? handle_mm_fault+0x2eb0/0x6ee0
[  135.090786][ T5540]  ? kmsan_get_metadata+0xf1/0x160
[  135.096004][ T5540]  ? kmsan_get_metadata+0xf1/0x160
[  135.101221][ T5540]  ? kmsan_internal_set_shadow_origin+0x7a/0x110
[  135.107640][ T5540]  kmsan_internal_check_memory+0x1e8/0x240
[  135.113550][ T5540]  kmsan_copy_to_user+0xef/0x190
[  135.118584][ T5540]  irqentry_exit+0x48b/0xa00
[  135.123289][ T5540]  exc_page_fault+0x7e/0xb0
[  135.127888][ T5540]  asm_exc_page_fault+0x2b/0x30
[  135.132823][ T5540] RIP: 0033:0x7f573bcc38e9
[  135.137333][ T5540] Code: 9d c6 12 00 31 ed 45 31 c9 83 e8 20 c6 44 24 14 20 45 31 e4 45 31 d2 48 98 c7 44 24 2c 00 00 00 00 41 be ff ff ff ff 45 31 ff <0f> b6 04 01 48 8d 0d ec c5 12 00 c7 44 24 08 00 00 00 00 c7 44 24
[  135.157017][ T5540] RSP: 002b:00007ffde98b4e90 EFLAGS: 00010246
[  135.163177][ T5540] RAX: 000000000000004c RBX: 00007ffde98b5390 RCX: 00007f573bdeff60
[  135.171235][ T5540] RDX: 0000000000000000 RSI: 00007f573bee686a RDI: 00007ffde98b5390
[  135.179256][ T5540] RBP: 0000000000000000 R08: 000000000000006c R09: 0000000000000000
[  135.187281][ T5540] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
[  135.195306][ T5540] R13: 00007ffde98b5450 R14: 00000000ffffffff R15: 0000000000000000
[  135.203356][ T5540]  </TASK>
[  135.206727][ T5540] Kernel Offset: disabled
[  135.211094][ T5540] Rebooting in 86400 seconds..