[ 223.274623][ T133] ===================================================== [ 223.281926][ T133] BUG: KMSAN: uninit-value in irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 [ 223.290928][ T133] irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 [ 223.297590][ T133] irqentry_exit+0x7b/0x760 [ 223.302245][ T133] sysvec_apic_timer_interrupt+0x52/0x90 [ 223.308043][ T133] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 223.314446][ T133] __msan_metadata_ptr_for_load_4+0x11/0x40 [ 223.320504][ T133] ip_fast_csum+0x1e6/0x3f0 [ 223.325158][ T133] nsim_dev_trap_report_work+0x8c0/0x1430 [ 223.331041][ T133] process_scheduled_works+0xb65/0x1e40 [ 223.336732][ T133] worker_thread+0xee4/0x1590 [ 223.341557][ T133] kthread+0x53f/0x600 [ 223.345777][ T133] ret_from_fork+0x20f/0x8d0 [ 223.350499][ T133] ret_from_fork_asm+0x1a/0x30 [ 223.355416][ T133] [ 223.357824][ T133] Uninit was created at: [ 223.362233][ T133] __kmalloc_node_track_caller_noprof+0x4f6/0x1750 [ 223.368961][ T133] __alloc_skb+0x90d/0x1190 [ 223.373648][ T133] nsim_dev_trap_report_work+0x3f2/0x1430 [ 223.379589][ T133] process_scheduled_works+0xb65/0x1e40 [ 223.385374][ T133] worker_thread+0xee4/0x1590 [ 223.390208][ T133] kthread+0x53f/0x600 [ 223.394460][ T133] ret_from_fork+0x20f/0x8d0 [ 223.399193][ T133] ret_from_fork_asm+0x1a/0x30 [ 223.404173][ T133] [ 223.406644][ T133] CPU: 0 UID: 0 PID: 133 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT(full) [ 223.416234][ T133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 223.426410][ T133] Workqueue: events_unbound nsim_dev_trap_report_work [ 223.433382][ T133] ===================================================== [ 223.440378][ T133] Disabling lock debugging due to kernel taint [ 223.446622][ T133] Kernel panic - not syncing: kmsan.panic set ... [ 223.453168][ T133] CPU: 0 UID: 0 PID: 133 Comm: kworker/u8:6 Tainted: G B syzkaller #0 PREEMPT(full) [ 223.464301][ T133] Tainted: [B]=BAD_PAGE [ 223.468545][ T133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 223.478703][ T133] Workqueue: events_unbound nsim_dev_trap_report_work [ 223.485812][ T133] Call Trace: [ 223.489346][ T133] [ 223.492342][ T133] __dump_stack+0x26/0x30 [ 223.496813][ T133] dump_stack_lvl+0x50/0x1c0 [ 223.501543][ T133] ? dump_stack+0x12/0x25 [ 223.506004][ T133] dump_stack+0x1e/0x25 [ 223.510296][ T133] vpanic+0x7b4/0x1430 [ 223.514625][ T133] panic+0x15d/0x160 [ 223.518686][ T133] kmsan_report+0x31a/0x320 [ 223.523385][ T133] ? kmsan_get_metadata+0xf1/0x160 [ 223.528639][ T133] ? __msan_warning+0x1b/0x30 [ 223.533481][ T133] ? irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 [ 223.540231][ T133] ? irqentry_exit+0x7b/0x760 [ 223.545160][ T133] ? sysvec_apic_timer_interrupt+0x52/0x90 [ 223.551287][ T133] ? asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 223.557598][ T133] ? __msan_metadata_ptr_for_load_4+0x11/0x40 [ 223.563853][ T133] ? ip_fast_csum+0x1e6/0x3f0 [ 223.568798][ T133] ? nsim_dev_trap_report_work+0x8c0/0x1430 [ 223.574833][ T133] ? process_scheduled_works+0xb65/0x1e40 [ 223.580699][ T133] ? worker_thread+0xee4/0x1590 [ 223.585682][ T133] ? kthread+0x53f/0x600 [ 223.590069][ T133] ? ret_from_fork+0x20f/0x8d0 [ 223.594999][ T133] ? ret_from_fork_asm+0x1a/0x30 [ 223.600072][ T133] ? chacha_permute+0x1057/0x1200 [ 223.605268][ T133] ? kmsan_get_metadata+0xf1/0x160 [ 223.610529][ T133] ? kmsan_internal_set_shadow_origin+0x7a/0x110 [ 223.616997][ T133] ? kmsan_get_metadata+0xf1/0x160 [ 223.622312][ T133] ? kmsan_get_metadata+0xf1/0x160 [ 223.627575][ T133] __msan_warning+0x1b/0x30 [ 223.632219][ T133] irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 [ 223.638810][ T133] irqentry_exit+0x7b/0x760 [ 223.643451][ T133] ? kmsan_internal_set_shadow_origin+0x7a/0x110 [ 223.649960][ T133] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 223.656191][ T133] sysvec_apic_timer_interrupt+0x52/0x90 [ 223.661984][ T133] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 223.668121][ T133] RIP: 0010:__msan_metadata_ptr_for_load_4+0x11/0x40 [ 223.675021][ T133] Code: 42 60 0e cc 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 53 48 83 ec 10 9c 8f 45 e8 <0f> 01 ca 48 8b 5d e8 be 04 00 00 00 31 d2 e8 8c 27 00 00 48 89 5d [ 223.694780][ T133] RSP: 0018:ffff888104f63a08 EFLAGS: 00000282 [ 223.701120][ T133] RAX: ffffffff86d36698 RBX: ffff88801e919018 RCX: ffff888107fd2140 [ 223.709307][ T133] RDX: 0000000000000000 RSI: 000000000fe48045 RDI: ffff88801e919018 [ 223.717396][ T133] RBP: ffff888104f63a20 R08: ffffea000000000f R09: 0000000000000003 [ 223.725484][ T133] R10: 000000000000002e R11: 0000000000000000 R12: 0000000000000000 [ 223.733579][ T133] R13: 0000000004d80141 R14: 0000000000c00000 R15: 0000000000000001 [ 223.741786][ T133] ? ip_fast_csum+0x298/0x3f0 [ 223.746756][ T133] ip_fast_csum+0x1e6/0x3f0 [ 223.751492][ T133] nsim_dev_trap_report_work+0x8c0/0x1430 [ 223.757419][ T133] ? __pfx_nsim_dev_trap_report_work+0x10/0x10 [ 223.763818][ T133] process_scheduled_works+0xb65/0x1e40 [ 223.769581][ T133] worker_thread+0xee4/0x1590 [ 223.774484][ T133] kthread+0x53f/0x600 [ 223.778768][ T133] ? __pfx_worker_thread+0x10/0x10 [ 223.784069][ T133] ? __pfx_kthread+0x10/0x10 [ 223.788833][ T133] ret_from_fork+0x20f/0x8d0 [ 223.793583][ T133] ? __switch_to+0x573/0x7a0 [ 223.798370][ T133] ? __pfx_kthread+0x10/0x10 [ 223.803363][ T133] ret_from_fork_asm+0x1a/0x30 [ 223.808355][ T133] [ 223.812511][ T133] Kernel Offset: disabled [ 223.816931][ T133] Rebooting in 86400 seconds.. ssh: connect to host 10.128.1.27 port 22: Connection timed out