RDX: 0000000000000002 RSI: 0000000020004a00 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 R13: 00000000004c0e20 R14: 00000000004d0f60 R15: 0000000000000003 ================================================================== BUG: KMSAN: uninit-value in ip_vs_lblcr_check_expire+0x1551/0x1600 net/netfilter/ipvs/ip_vs_lblcr.c:479 CPU: 0 PID: 23288 Comm: syz-executor3 Not tainted 4.17.0+ #22 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+0x185/0x1d0 lib/dump_stack.c:113 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:990 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:640 ip_vs_lblcr_check_expire+0x1551/0x1600 net/netfilter/ipvs/ip_vs_lblcr.c:479 call_timer_fn+0x280/0x5d0 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0xd96/0x11b0 kernel/time/timer.c:1666 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692 __do_softirq+0x592/0x979 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:366 [inline] irq_exit+0x207/0x240 kernel/softirq.c:407 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525 smp_apic_timer_interrupt+0x64/0x90 arch/x86/kernel/apic/apic.c:1055 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:868 RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:78 [inline] RIP: 0010:dump_stack+0x1af/0x1d0 lib/dump_stack.c:118 RSP: 0018:ffff8800b6d4f2e0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: ffff8801fd41cea0 RBX: ffff880128332620 RCX: ffff8801fd01cea0 RDX: ffff8801fd01cea0 RSI: aaaaaaaaaaaab000 RDI: ffffea0000420a80 RBP: ffff8800b6d4f328 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff865548a0 R12: 00000000bdc0011b R13: 0000000000000282 R14: 0000000000000000 R15: 0000000000000000 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x87b/0xab0 lib/fault-inject.c:149 __should_failslab+0x278/0x2a0 mm/failslab.c:32 should_failslab+0x29/0x70 mm/slab_common.c:1522 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slub.c:2679 [inline] __kmalloc_node_track_caller+0x24b/0x11b0 mm/slub.c:4395 __kmalloc_reserve net/core/skbuff.c:138 [inline] __alloc_skb+0x2cb/0x9e0 net/core/skbuff.c:206 alloc_skb include/linux/skbuff.h:988 [inline] alloc_skb_with_frags+0x1e6/0xb80 net/core/skbuff.c:5254 sock_alloc_send_pskb+0xb56/0x11a0 net/core/sock.c:2088 unix_dgram_sendmsg+0xc67/0x3640 net/unix/af_unix.c:1672 unix_seqpacket_sendmsg+0x262/0x2d0 net/unix/af_unix.c:2053 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg net/socket.c:639 [inline] ___sys_sendmsg+0xec8/0x1320 net/socket.c:2117 __sys_sendmmsg+0x490/0x850 net/socket.c:2212 __do_sys_sendmmsg net/socket.c:2241 [inline] __se_sys_sendmmsg net/socket.c:2238 [inline] __x64_sys_sendmmsg+0x11c/0x170 net/socket.c:2238 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ba9 RSP: 002b:00007f3d08f9ac68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f3d08f9b6d4 RCX: 0000000000455ba9 RDX: 0000000000000002 RSI: 0000000020004a00 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016 R13: 00000000004c0e20 R14: 00000000004d0f60 R15: 0000000000000003 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline] kmsan_internal_alloc_meta_for_pages+0x146/0x700 mm/kmsan/kmsan.c:702 kmsan_alloc_page+0x75/0xd0 mm/kmsan/kmsan_hooks.c:250 __alloc_pages_nodemask+0xf7b/0x5cc0 mm/page_alloc.c:4404 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:494 [inline] kmalloc_order mm/slab_common.c:1148 [inline] kmalloc_order_trace+0xbb/0x390 mm/slab_common.c:1159 kmalloc_large include/linux/slab.h:446 [inline] __kmalloc+0x335/0x350 mm/slub.c:3805 kmalloc include/linux/slab.h:517 [inline] ip_vs_lblcr_init_svc+0x57/0x310 net/netfilter/ipvs/ip_vs_lblcr.c:518 ip_vs_bind_scheduler+0xa9/0x1f0 net/netfilter/ipvs/ip_vs_sched.c:51 ip_vs_add_service+0xa9d/0x1d90 net/netfilter/ipvs/ip_vs_ctl.c:1265 do_ip_vs_set_ctl+0x2aa9/0x2cd0 net/netfilter/ipvs/ip_vs_ctl.c:2462 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x47c/0x4e0 net/netfilter/nf_sockopt.c:115 ip_setsockopt+0x24b/0x2b0 net/ipv4/ip_sockglue.c:1251 tcp_setsockopt+0x1c0/0x1f0 net/ipv4/tcp.c:2891 sock_common_setsockopt+0x13b/0x170 net/core/sock.c:3039 __sys_setsockopt+0x496/0x540 net/socket.c:1903 __do_sys_setsockopt net/socket.c:1914 [inline] __se_sys_setsockopt net/socket.c:1911 [inline] __x64_sys_setsockopt+0x15c/0x1c0 net/socket.c:1911 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 ==================================================================