last executing test programs:

kernel console output (not intermixed with test programs):

[  167.875001][ T5558] =====================================================
[  167.882255][ T5558] BUG: KMSAN: kernel-infoleak in irqentry_exit+0x48b/0xa00
[  167.889597][ T5558]  irqentry_exit+0x48b/0xa00
[  167.894328][ T5558]  exc_page_fault+0x7e/0xb0
[  167.898959][ T5558]  asm_exc_page_fault+0x2b/0x30
[  167.903905][ T5558] 
[  167.906278][ T5558] Local variable end_time.i.i created at:
[  167.912057][ T5558]  __x64_sys_poll+0x87/0x540
[  167.916735][ T5558]  x64_sys_call+0x3130/0x3ea0
[  167.921524][ T5558] 
[  167.923889][ T5558] Bytes 0-3 of 4 are uninitialized
[  167.929051][ T5558] Memory access of size 4 starts at ffff888109567e88
[  167.935798][ T5558] Data copied to user address 00007fa573f85140
[  167.941996][ T5558] 
[  167.944423][ T5558] CPU: 1 UID: 0 PID: 5558 Comm: sshd-session Not tainted syzkaller #0 PREEMPT(lazy) 
[  167.953977][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  167.964113][ T5558] =====================================================
[  167.971102][ T5558] Disabling lock debugging due to kernel taint
[  167.977334][ T5558] Kernel panic - not syncing: kmsan.panic set ...
[  167.983823][ T5558] CPU: 1 UID: 0 PID: 5558 Comm: sshd-session Tainted: G    B               syzkaller #0 PREEMPT(lazy) 
[  167.994965][ T5558] Tainted: [B]=BAD_PAGE
[  167.999181][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[  168.009313][ T5558] Call Trace:
[  168.012647][ T5558]  <TASK>
[  168.015653][ T5558]  __dump_stack+0x26/0x30
[  168.020100][ T5558]  dump_stack_lvl+0x50/0x1c0
[  168.024792][ T5558]  ? dump_stack+0x12/0x25
[  168.029234][ T5558]  dump_stack+0x1e/0x25
[  168.033495][ T5558]  vpanic+0x7b4/0x1430
[  168.037710][ T5558]  panic+0x15d/0x160
[  168.041755][ T5558]  kmsan_report+0x31a/0x320
[  168.046388][ T5558]  ? kmsan_get_metadata+0xf1/0x160
[  168.051635][ T5558]  ? kmsan_internal_check_memory+0x1e8/0x240
[  168.057744][ T5558]  ? kmsan_copy_to_user+0xef/0x190
[  168.062978][ T5558]  ? irqentry_exit+0x48b/0xa00
[  168.067882][ T5558]  ? exc_page_fault+0x7e/0xb0
[  168.072687][ T5558]  ? asm_exc_page_fault+0x2b/0x30
[  168.077821][ T5558]  ? handle_mm_fault+0x2eb0/0x6ee0
[  168.083096][ T5558]  ? kmsan_get_metadata+0xf1/0x160
[  168.088355][ T5558]  ? kmsan_get_metadata+0xf1/0x160
[  168.093608][ T5558]  ? kmsan_internal_set_shadow_origin+0x7a/0x110
[  168.100085][ T5558]  kmsan_internal_check_memory+0x1e8/0x240
[  168.106073][ T5558]  kmsan_copy_to_user+0xef/0x190
[  168.111158][ T5558]  irqentry_exit+0x48b/0xa00
[  168.115921][ T5558]  exc_page_fault+0x7e/0xb0
[  168.120601][ T5558]  asm_exc_page_fault+0x2b/0x30
[  168.125576][ T5558] RIP: 0033:0x7fa573d22487
[  168.130080][ T5558] Code: 4a 48 89 f5 41 89 d4 be 01 00 00 00 31 d2 e8 c0 fd ff ff 85 c0 74 64 8b 03 48 8b 4b 08 44 39 e0 7e 05 45 85 e4 79 64 48 63 d0 <48> 89 2c d1 83 c0 01 c7 43 10 00 00 00 00 89 03 48 83 c4 08 5b 5d
[  168.149814][ T5558] RSP: 002b:00007ffd60e84030 EFLAGS: 00010246
[  168.155994][ T5558] RAX: 0000000000000002 RBX: 000055a60d395c10 RCX: 000055a60d395c60
[  168.164048][ T5558] RDX: 0000000000000002 RSI: 0000000000000001 RDI: 000055a60d395c60
[  168.172107][ T5558] RBP: 000055a60d3cd580 R08: 00007fa5739f1ac0 R09: 0000000000000020
[  168.180179][ T5558] R10: 0000000000000004 R11: 000000000000005b R12: 0000000000000002
[  168.188223][ T5558] R13: 000000000000005e R14: 00007fa573dc8ace R15: 000055a60d3cd580
[  168.196304][ T5558]  </TASK>
[  168.200145][ T5558] Kernel Offset: disabled
[  168.204553][ T5558] Rebooting in 86400 seconds..