===================================================== BUG: KMSAN: uninit-value in bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3745 CPU: 0 PID: 11958 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x220 lib/dump_stack.c:118 kmsan_report+0xf8/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3745 bond_neigh_init+0x216/0x4b0 drivers/net/bonding/bond_main.c:3716 ___neigh_create+0x15f1/0x2e20 net/core/neighbour.c:613 __neigh_create+0xbd/0xd0 net/core/neighbour.c:674 ip6_finish_output2+0x149a/0x2670 net/ipv6/ip6_output.c:113 __ip6_finish_output+0x83d/0x8f0 net/ipv6/ip6_output.c:142 ip6_finish_output+0x2db/0x420 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x60a/0x770 net/ipv6/ip6_output.c:175 dst_output include/net/dst.h:436 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] mld_sendpack+0xebd/0x13d0 net/ipv6/mcast.c:1682 mld_send_cr net/ipv6/mcast.c:1978 [inline] mld_ifc_timer_expire+0x1181/0x1790 net/ipv6/mcast.c:2477 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers+0xd60/0x1270 kernel/time/timer.c:1773 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786 __do_softirq+0x4a1/0x83a kernel/softirq.c:293 invoke_softirq kernel/softirq.c:375 [inline] irq_exit+0x230/0x280 kernel/softirq.c:416 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:834 RIP: 0010:finish_lock_switch+0x2b/0x40 kernel/sched/core.c:3130 Code: 48 89 e5 53 48 89 fb e8 23 5b a1 00 8b b8 88 0c 00 00 48 8b 00 48 85 c0 75 12 48 89 df e8 ad 54 a1 00 c6 00 00 c6 03 00 fb 5b <5d> c3 e8 5e 5a a1 00 eb e7 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 RSP: 0018:ffff9f9b034afbe0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: ffff913e1fef3cc0 RBX: ffff913d70a6db80 RCX: ffffe96805ef0470 RDX: ffff913e1fe0ccc0 RSI: 0000000000000000 RDI: ffff913d2fcdbcc0 RBP: ffff9f9b034afbe0 R08: ffffe9680000000f R09: ffff913d2fffb000 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 R13: ffff913d2d1ba850 R14: ffff913d2d1b9e80 R15: ffff913d2fcdbcc0 finish_task_switch+0xfa/0x2d0 kernel/sched/core.c:3235 context_switch kernel/sched/core.c:3399 [inline] __schedule+0x71f/0x7f0 kernel/sched/core.c:4098 schedule+0x1eb/0x340 kernel/sched/core.c:4172 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x25e/0x940 kernel/time/hrtimer.c:1874 hrtimer_nanosleep+0x7dc/0xab0 kernel/time/hrtimer.c:1927 __do_sys_nanosleep kernel/time/hrtimer.c:1961 [inline] __se_sys_nanosleep+0x1df/0x290 kernel/time/hrtimer.c:1948 __x64_sys_nanosleep+0x3e/0x60 kernel/time/hrtimer.c:1948 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x458dc0 Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d 71 fb 61 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 ea 46 00 00 RSP: 002b:0000000000a6fd88 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 000000000025a8b8 RCX: 0000000000458dc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000a6fd90 RBP: 0000000000007466 R08: 0000000000000001 R09: 0000000001979940 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000d R13: 0000000000a6fde0 R14: 000000000025a7e7 R15: 0000000000a6fdf0 Local variable ----parms@bond_neigh_init created at: bond_neigh_init+0x8c/0x4b0 drivers/net/bonding/bond_main.c:3707 bond_neigh_init+0x8c/0x4b0 drivers/net/bonding/bond_main.c:3707 =====================================================