==================================================================
BUG: KASAN: stack-out-of-bounds in jhash2 include/linux/jhash.h:138 [inline]
BUG: KASAN: stack-out-of-bounds in __xfrm6_addr_hash net/xfrm/xfrm_hash.h:16 [inline]
BUG: KASAN: stack-out-of-bounds in __xfrm6_daddr_saddr_hash net/xfrm/xfrm_hash.h:29 [inline]
BUG: KASAN: stack-out-of-bounds in __xfrm_dst_hash+0x399/0x480 net/xfrm/xfrm_hash.h:95
Read of size 4 at addr ffffc90000170b18 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
<IRQ>
__dump_stack+0x21/0x24 lib/dump_stack.c:77
dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:435 [inline]
kasan_report+0xe2/0x130 mm/kasan/report.c:452
__asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
jhash2 include/linux/jhash.h:138 [inline]
__xfrm6_addr_hash net/xfrm/xfrm_hash.h:16 [inline]
__xfrm6_daddr_saddr_hash net/xfrm/xfrm_hash.h:29 [inline]
__xfrm_dst_hash+0x399/0x480 net/xfrm/xfrm_hash.h:95
xfrm_dst_hash net/xfrm/xfrm_state.c:63 [inline]
xfrm_state_find+0x28c/0x28b0 net/xfrm/xfrm_state.c:1068
xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:2398 [inline]
xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:2443 [inline]
xfrm_resolve_and_create_bundle+0x697/0x29f0 net/xfrm/xfrm_policy.c:2736
xfrm_bundle_lookup net/xfrm/xfrm_policy.c:2971 [inline]
xfrm_lookup_with_ifid+0x7ea/0x1a80 net/xfrm/xfrm_policy.c:3102
xfrm_lookup net/xfrm/xfrm_policy.c:3194 [inline]
xfrm_lookup_route+0x3c/0x170 net/xfrm/xfrm_policy.c:3205
ip_route_output_flow+0x1f8/0x2f0 net/ipv4/route.c:2808
ip_route_output_ports include/net/route.h:169 [inline]
igmpv3_newpack+0x281/0xc80 net/ipv4/igmp.c:372
add_grhead+0x75/0x2e0 net/ipv4/igmp.c:443
add_grec+0x116b/0x1410 net/ipv4/igmp.c:577
igmpv3_send_cr net/ipv4/igmp.c:714 [inline]
igmp_ifc_timer_expire+0x89e/0xf80 net/ipv4/igmp.c:813
call_timer_fn+0x38/0x290 kernel/time/timer.c:1450
expire_timers kernel/time/timer.c:1495 [inline]
__run_timers+0x650/0x9e0 kernel/time/timer.c:1789
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1802
__do_softirq+0x255/0x563 kernel/softirq.c:309
asm_call_irq_on_stack+0xf/0x20
</IRQ>
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:405 [inline]
__irq_exit_rcu+0x128/0x150 kernel/softirq.c:435
irq_exit_rcu+0x9/0x10 kernel/softirq.c:447
sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:default_idle+0x12/0x20 arch/x86/kernel/process.c:718
Code: 44 2a 00 00 49 bd 00 00 00 00 00 fc ff df e9 67 ff ff ff e8 d0 f7 fa ff 55 48 89 e5 0f 1f 44 00 00 0f 00 2d 70 0a 62 00 fb f4 <5d> c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 48 89 e5 41 57 41 56
RSP: 0018:ffffc90000107db8 EFLAGS: 00000256
RAX: ffff8881f7100000 RBX: ffff8881002962c0 RCX: 000000000000f9be
RDX: 0000000000000001 RSI: ffffffff85408f40 RDI: ffffffff85408f00
RBP: ffffc90000107db8 R08: ffff8881f71573d3 R09: 1ffff1103ee2ae7a
R10: dffffc0000000000 R11: ffffed103ee2ae7b R12: 0000000000000000
R13: 1ffff11020052c58 R14: dffffc0000000000 R15: dffffc0000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:709
default_idle_call+0x71/0x1d0 kernel/sched/idle.c:114
cpuidle_idle_call kernel/sched/idle.c:204 [inline]
do_idle+0x368/0x620 kernel/sched/idle.c:328
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:425
start_secondary+0x2e9/0x3a0 arch/x86/kernel/smpboot.c:276
secondary_startup_64_no_verify+0xad/0xbb
Memory state around the buggy address:
ffffc90000170a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000170a80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00
>ffffc90000170b00: 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
^
ffffc90000170b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000170c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 00 00 add %al,(%rax)
2: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
9: fc ff df
c: e9 67 ff ff ff jmp 0xffffff78
11: e8 d0 f7 fa ff call 0xfffaf7e6
16: 55 push %rbp
17: 48 89 e5 mov %rsp,%rbp
1a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
1f: 0f 00 2d 70 0a 62 00 verw 0x620a70(%rip) # 0x620a96
26: fb sti
27: f4 hlt
* 28: 5d pop %rbp <-- trapping instruction
29: c3 ret
2a: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
31: 00 00 00
34: 66 90 xchg %ax,%ax
36: 55 push %rbp
37: 48 89 e5 mov %rsp,%rbp
3a: 41 57 push %r15
3c: 41 56 push %r14