IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 ================================================================== BUG: KMSAN: uninit-value in set_hsr_tag_path net/hsr/hsr_main.h:86 [inline] BUG: KMSAN: uninit-value in set_hsr_stag_path net/hsr/hsr_main.h:129 [inline] BUG: KMSAN: uninit-value in send_hsr_supervision_frame+0x1056/0x1510 net/hsr/hsr_device.c:293 CPU: 0 PID: 8732 Comm: syz-executor0 Not tainted 4.20.0-rc7+ #16 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+0x173/0x1d0 lib/dump_stack.c:113 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613 __msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:295 set_hsr_tag_path net/hsr/hsr_main.h:86 [inline] set_hsr_stag_path net/hsr/hsr_main.h:129 [inline] send_hsr_supervision_frame+0x1056/0x1510 net/hsr/hsr_device.c:293 hsr_announce+0x14c/0x3a0 net/hsr/hsr_device.c:342 call_timer_fn+0x285/0x600 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0xdb4/0x11d0 kernel/time/timer.c:1682 run_timer_softirq+0x2e/0x50 kernel/time/timer.c:1695 __do_softirq+0x53f/0x93a kernel/softirq.c:293 invoke_softirq kernel/softirq.c:375 [inline] irq_exit+0x214/0x250 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:1063 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:814 RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:67 Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01 RSP: 0018:ffff888078b7f9e0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff888058b8c000 RBX: ccccccccccccd000 RCX: 0000000000000000 RDX: 0000000000001000 RSI: 0000000000000000 RDI: ffff888058d8d000 RBP: ffff888078b7fa08 R08: 0000000000000002 R09: ffff888058d8c000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000160000000000 R13: 0000000000000000 R14: ffffea0001bd7bc0 R15: ffff888000000000 clear_page+0x2e/0x40 arch/x86/include/asm/page_64.h:64 clear_user_page arch/x86/include/asm/page.h:28 [inline] clear_user_highpage include/linux/highmem.h:138 [inline] clear_subpage mm/memory.c:4439 [inline] process_huge_page mm/memory.c:4393 [inline] clear_huge_page+0x47a/0xc90 mm/memory.c:4453 __do_huge_pmd_anonymous_page mm/huge_memory.c:567 [inline] do_huge_pmd_anonymous_page+0xfb5/0x28c0 mm/huge_memory.c:734 create_huge_pmd mm/memory.c:3658 [inline] __handle_mm_fault mm/memory.c:3862 [inline] handle_mm_fault+0x5b3b/0x9ef0 mm/memory.c:3928 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0xf26/0x1a60 arch/x86/mm/fault.c:1489 do_page_fault+0xe9/0x5c0 arch/x86/mm/fault.c:1520 page_fault+0x3d/0x50 arch/x86/entry/entry_64.S:1156 RIP: 0033:0x40050c Code: 01 e9 cd 01 00 00 48 8b 44 24 10 48 0b 44 24 28 75 20 48 8b 14 24 48 8b 7c 24 20 be 02 00 00 00 e8 69 4b 00 00 48 8b 4c 24 08 <66> 89 01 e9 a1 01 00 00 48 8b 44 24 08 48 8b 14 24 be 02 00 00 00 RSP: 002b:0000000000a4fbc0 EFLAGS: 00010206 RAX: 0000000000000002 RBX: 000000000073c900 RCX: 0000000020e68000 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 000000000073c900 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000a4fcc0 R11: 0000000000000246 R12: 00000000000003e8 R13: fffffffffffffffe R14: 00000000000133ce R15: 000000000073bf0c Uninit was created at: kmsan_save_stack_with_flags+0x7a/0x130 mm/kmsan/kmsan.c:204 kmsan_internal_alloc_meta_for_pages+0x113/0x580 mm/kmsan/kmsan_hooks.c:98 kmsan_alloc_page+0x7e/0x100 mm/kmsan/kmsan_hooks.c:396 __alloc_pages_nodemask+0x1587/0x5f20 mm/page_alloc.c:4416 __alloc_pages include/linux/gfp.h:475 [inline] __alloc_pages_node include/linux/gfp.h:488 [inline] alloc_pages_node include/linux/gfp.h:502 [inline] __page_frag_cache_refill mm/page_alloc.c:4488 [inline] page_frag_alloc+0x3c1/0x980 mm/page_alloc.c:4524 __netdev_alloc_skb+0x1f1/0xa50 net/core/skbuff.c:414 netdev_alloc_skb include/linux/skbuff.h:2671 [inline] dev_alloc_skb include/linux/skbuff.h:2684 [inline] send_hsr_supervision_frame+0x168/0x1510 net/hsr/hsr_device.c:266 hsr_announce+0x14c/0x3a0 net/hsr/hsr_device.c:342 call_timer_fn+0x285/0x600 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0xdb4/0x11d0 kernel/time/timer.c:1682 run_timer_softirq+0x2e/0x50 kernel/time/timer.c:1695 __do_softirq+0x53f/0x93a kernel/softirq.c:293 ==================================================================