last executing test programs:

kernel console output (not intermixed with test programs):

[  168.928588][ T5554] Bytes 0-3 of 4 are uninitialized
[  168.933770][ T5554] Memory access of size 4 starts at ffff88811908be88
[  168.940525][ T5554] Data copied to user address 00007f4550f88ac0
[  168.946756][ T5554] 
[  168.949170][ T5554] CPU: 0 UID: 0 PID: 5554 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(lazy) 
[  168.959106][ T5554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  168.969252][ T5554] =====================================================
[  168.976238][ T5554] Disabling lock debugging due to kernel taint
[  168.982443][ T5554] Kernel panic - not syncing: kmsan.panic set ...
[  168.988955][ T5554] CPU: 0 UID: 0 PID: 5554 Comm: dhcpcd-run-hook Tainted: G    B               syzkaller #0 PREEMPT(lazy) 
[  169.000438][ T5554] Tainted: [B]=BAD_PAGE
[  169.004749][ T5554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  169.014925][ T5554] Call Trace:
[  169.018341][ T5554]  <TASK>
[  169.021387][ T5554]  __dump_stack+0x26/0x30
[  169.026128][ T5554]  dump_stack_lvl+0x50/0x1c0
[  169.031034][ T5554]  ? dump_stack+0x12/0x25
[  169.035506][ T5554]  dump_stack+0x1e/0x25
[  169.039778][ T5554]  vpanic+0x7b4/0x1430
[  169.044002][ T5554]  panic+0x15d/0x160
[  169.048061][ T5554]  kmsan_report+0x31a/0x320
[  169.052711][ T5554]  ? kmsan_get_metadata+0xf1/0x160
[  169.057966][ T5554]  ? kmsan_internal_check_memory+0x1e8/0x240
[  169.064074][ T5554]  ? kmsan_copy_to_user+0xef/0x190
[  169.069448][ T5554]  ? irqentry_exit+0x48b/0xa00
[  169.074364][ T5554]  ? exc_page_fault+0x7e/0xb0
[  169.079176][ T5554]  ? asm_exc_page_fault+0x2b/0x30
[  169.084316][ T5554]  ? handle_mm_fault+0x2eb0/0x6ee0
[  169.089600][ T5554]  ? kmsan_get_metadata+0xf1/0x160
[  169.094866][ T5554]  ? kmsan_get_metadata+0xf1/0x160
[  169.100127][ T5554]  ? kmsan_internal_set_shadow_origin+0x7a/0x110
[  169.106597][ T5554]  kmsan_internal_check_memory+0x1e8/0x240
[  169.112551][ T5554]  kmsan_copy_to_user+0xef/0x190
[  169.117631][ T5554]  irqentry_exit+0x48b/0xa00
[  169.122383][ T5554]  exc_page_fault+0x7e/0xb0
[  169.127034][ T5554]  asm_exc_page_fault+0x2b/0x30
[  169.132002][ T5554] RIP: 0033:0x7f4551273b10
[  169.136509][ T5554] Code: 8b 7f 08 e8 12 ee fc ff 48 8b 7b 10 e8 09 ee fc ff 48 89 df e8 01 ee fc ff 48 95 5a 5b 5d c3 48 85 ff 74 0e 8b 07 ff c8 78 03 <89> 07 c3 e9 e8 ed fc ff c3 8a 47 0c 84 c0 74 28 55 53 52 48 8b 6f
[  169.156241][ T5554] RSP: 002b:00007fff4b153638 EFLAGS: 00010246
[  169.162511][ T5554] RAX: 0000000000000000 RBX: 000055e00ec9de60 RCX: 0000000000000000
[  169.170563][ T5554] RDX: 00007f45512f2450 RSI: 0000000000000001 RDI: 000055e00ecb3440
[  169.178707][ T5554] RBP: 0000000000000001 R08: 00007fff4b153640 R09: 000055e00ec9de60
[  169.186768][ T5554] R10: 00007f45511c8fe0 R11: 00007f45511c98e0 R12: 000055e00ecae208
[  169.194829][ T5554] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[  169.202923][ T5554]  </TASK>
[  169.206183][ T5554] Kernel Offset: disabled
[  169.210568][ T5554] Rebooting in 86400 seconds..