last executing test programs:

kernel console output (not intermixed with test programs):

[  141.022076][ T5558] =====================================================
[  141.029272][ T5558] BUG: KMSAN: kernel-infoleak in irqentry_exit+0x48b/0xa00
[  141.036579][ T5558]  irqentry_exit+0x48b/0xa00
[  141.041266][ T5558]  exc_page_fault+0x7e/0xb0
[  141.045851][ T5558]  asm_exc_page_fault+0x2b/0x30
[  141.050764][ T5558] 
[  141.053108][ T5558] Local variable end_time.i.i created at:
[  141.058846][ T5558]  __x64_sys_poll+0x87/0x540
[  141.063493][ T5558]  x64_sys_call+0x3130/0x3ea0
[  141.068250][ T5558] 
[  141.070592][ T5558] Bytes 0-3 of 4 are uninitialized
[  141.075728][ T5558] Memory access of size 4 starts at ffff88810d17be88
[  141.082444][ T5558] Data copied to user address 00007ff75685e140
[  141.088630][ T5558] 
[  141.091010][ T5558] CPU: 1 UID: 0 PID: 5558 Comm: sshd-session Not tainted syzkaller #0 PREEMPT(lazy) 
[  141.100539][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  141.110640][ T5558] =====================================================
[  141.117602][ T5558] Disabling lock debugging due to kernel taint
[  141.123782][ T5558] Kernel panic - not syncing: kmsan.panic set ...
[  141.130264][ T5558] CPU: 1 UID: 0 PID: 5558 Comm: sshd-session Tainted: G    B               syzkaller #0 PREEMPT(lazy) 
[  141.141389][ T5558] Tainted: [B]=BAD_PAGE
[  141.145578][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  141.155707][ T5558] Call Trace:
[  141.159035][ T5558]  <TASK>
[  141.162007][ T5558]  __dump_stack+0x26/0x30
[  141.166420][ T5558]  dump_stack_lvl+0x50/0x1c0
[  141.171104][ T5558]  ? dump_stack+0x12/0x25
[  141.175531][ T5558]  dump_stack+0x1e/0x25
[  141.179776][ T5558]  vpanic+0x7b4/0x1430
[  141.183975][ T5558]  panic+0x15d/0x160
[  141.188041][ T5558]  kmsan_report+0x31a/0x320
[  141.192705][ T5558]  ? kmsan_get_metadata+0xf1/0x160
[  141.197934][ T5558]  ? kmsan_internal_check_memory+0x1e8/0x240
[  141.204016][ T5558]  ? kmsan_copy_to_user+0xef/0x190
[  141.209498][ T5558]  ? irqentry_exit+0x48b/0xa00
[  141.214395][ T5558]  ? exc_page_fault+0x7e/0xb0
[  141.219250][ T5558]  ? asm_exc_page_fault+0x2b/0x30
[  141.224378][ T5558]  ? handle_mm_fault+0x2eb0/0x6ee0
[  141.229639][ T5558]  ? kmsan_get_metadata+0xf1/0x160
[  141.235210][ T5558]  ? kmsan_get_metadata+0xf1/0x160
[  141.240441][ T5558]  ? kmsan_internal_set_shadow_origin+0x7a/0x110
[  141.246893][ T5558]  kmsan_internal_check_memory+0x1e8/0x240
[  141.252829][ T5558]  kmsan_copy_to_user+0xef/0x190
[  141.257886][ T5558]  irqentry_exit+0x48b/0xa00
[  141.262602][ T5558]  exc_page_fault+0x7e/0xb0
[  141.267206][ T5558]  asm_exc_page_fault+0x2b/0x30
[  141.272153][ T5558] RIP: 0033:0x7ff756409995
[  141.276627][ T5558] Code: 0f b1 0f 75 f3 48 89 0a b8 01 00 00 00 c3 0f 1f 80 00 00 00 00 48 8b 07 48 89 06 b8 01 00 00 00 c3 0f 1f 40 00 b8 01 00 00 00 <48> 89 37 c3 0f 1f 80 00 00 00 00 8b 07 89 06 b8 01 00 00 00 c3 66
[  141.296331][ T5558] RSP: 002b:00007ffc49844968 EFLAGS: 00010206
[  141.302464][ T5558] RAX: 0000000000000001 RBX: 00005603af6c0150 RCX: 0000000000000001
[  141.310493][ T5558] RDX: 00005603af66aaf0 RSI: 59e26073cfd1409f RDI: 00007ff75683e800
[  141.318525][ T5558] RBP: 0000000000000000 R08: 00007ff7561f1ac0 R09: 0000000000000070
[  141.326545][ T5558] R10: 0000000000000004 R11: 000000000000005b R12: 0000000000000000
[  141.334564][ T5558] R13: 00005603af66aa90 R14: 00005603af66ab30 R15: 00000000000027c0
[  141.342612][ T5558]  </TASK>
[  141.345922][ T5558] Kernel Offset: disabled
[  141.350299][ T5558] Rebooting in 86400 seconds..