hsr_slave_0: hsr_addr_subst_dest: Unknown node hsr_slave_1: hsr_addr_subst_dest: Unknown node ===================================================== BUG: KMSAN: uninit-value in hsr_get_node+0x45d/0xba0 net/hsr/hsr_framereg.c:220 CPU: 0 PID: 15713 Comm: syz-executor.1 Not tainted 5.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 hsr_get_node+0x45d/0xba0 net/hsr/hsr_framereg.c:220 fill_frame_info net/hsr/hsr_forward.c:498 [inline] hsr_forward_skb+0x9d9/0x2610 net/hsr/hsr_forward.c:537 hsr_dev_xmit+0x133/0x230 net/hsr/hsr_device.c:220 __netdev_start_xmit include/linux/netdevice.h:4778 [inline] netdev_start_xmit include/linux/netdevice.h:4792 [inline] xmit_one+0x2b6/0x760 net/core/dev.c:3574 dev_hard_start_xmit net/core/dev.c:3590 [inline] __dev_queue_xmit+0x3426/0x45c0 net/core/dev.c:4151 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4184 __bpf_tx_skb net/core/filter.c:2116 [inline] __bpf_redirect_common net/core/filter.c:2155 [inline] __bpf_redirect+0x148d/0x1700 net/core/filter.c:2162 ____bpf_clone_redirect net/core/filter.c:2448 [inline] bpf_clone_redirect+0x4a1/0x660 net/core/filter.c:2420 ___bpf_prog_run+0x4279/0x93e0 kernel/bpf/core.c:1513 __bpf_prog_run512+0x12e/0x190 kernel/bpf/core.c:1691 bpf_test_run+0x544/0xea0 include/linux/filter.h:743 bpf_prog_test_run_skb+0x1914/0x3500 net/bpf/test_run.c:582 bpf_prog_test_run kernel/bpf/syscall.c:3122 [inline] __do_sys_bpf+0xbd97/0x1a840 kernel/bpf/syscall.c:4400 __se_sys_bpf+0x8e/0xa0 kernel/bpf/syscall.c:4340 __ia32_sys_bpf+0x4a/0x70 kernel/bpf/syscall.c:4340 do_syscall_32_irqs_on arch/x86/entry/common.c:79 [inline] __do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:141 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f56549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f552f5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000165 RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000020000140 RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 kmsan_slab_alloc+0x8d/0xe0 mm/kmsan/kmsan_hooks.c:76 slab_alloc_node mm/slub.c:2907 [inline] __kmalloc_node_track_caller+0xa37/0x1430 mm/slub.c:4527 __kmalloc_reserve net/core/skbuff.c:142 [inline] pskb_expand_head+0x25e/0x1e20 net/core/skbuff.c:1638 skb_ensure_writable+0x4cf/0x590 net/core/skbuff.c:5511 __bpf_try_make_writable net/core/filter.c:1654 [inline] bpf_try_make_writable net/core/filter.c:1660 [inline] bpf_try_make_head_writable net/core/filter.c:1668 [inline] ____bpf_clone_redirect net/core/filter.c:2442 [inline] bpf_clone_redirect+0x25d/0x660 net/core/filter.c:2420 ___bpf_prog_run+0x4279/0x93e0 kernel/bpf/core.c:1513 __bpf_prog_run512+0x12e/0x190 kernel/bpf/core.c:1691 bpf_test_run+0x544/0xea0 include/linux/filter.h:743 bpf_prog_test_run_skb+0x1914/0x3500 net/bpf/test_run.c:582 bpf_prog_test_run kernel/bpf/syscall.c:3122 [inline] __do_sys_bpf+0xbd97/0x1a840 kernel/bpf/syscall.c:4400 __se_sys_bpf+0x8e/0xa0 kernel/bpf/syscall.c:4340 __ia32_sys_bpf+0x4a/0x70 kernel/bpf/syscall.c:4340 do_syscall_32_irqs_on arch/x86/entry/common.c:79 [inline] __do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:141 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c =====================================================