bond34: (slave ip6gretap34): making interface the new active one bond34: (slave ip6gretap34): making interface the new active one general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 1 PID: 4966 Comm: syz-executor341 Not tainted 5.18.0-syzkaller-10188-g58f9d52ff689 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rlb_req_update_slave_clients+0x109/0x2f0 drivers/net/bonding/bond_alb.c:502 Code: 5d 18 8f fc 41 80 3e 00 0f 85 a5 01 00 00 89 d8 48 c1 e0 06 49 03 84 24 68 01 00 00 48 8d 78 30 49 89 c7 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 98 01 00 00 4d 39 6f 30 75 83 e8 22 18 8f fc 49 RSP: 0018:ffffc90005baee80 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff84eb6bf3 RDI: 0000000000000030 RBP: dffffc0000000000 R08: 0000000000000005 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801d228c80 R13: ffff88801c169800 R14: ffffed1003a451bd R15: 0000000000000000 FS: 00007f416e0a0700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f416e160260 CR3: 00000000686f3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: alb_fasten_mac_swap+0x886/0xa80 drivers/net/bonding/bond_alb.c:1070 bond_alb_handle_active_change+0x624/0x1050 drivers/net/bonding/bond_alb.c:1765 bond_change_active_slave+0xfa1/0x29b0 drivers/net/bonding/bond_main.c:1173 bond_select_active_slave+0x23f/0xa50 drivers/net/bonding/bond_main.c:1253 bond_enslave+0x3b34/0x53b0 drivers/net/bonding/bond_main.c:2159 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2577 rtnl_newlink_create net/core/rtnetlink.c:3380 [inline] __rtnl_newlink+0x13ac/0x17e0 net/core/rtnetlink.c:3580 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3593 rtnetlink_rcv_msg+0x43a/0xc90 net/core/rtnetlink.c:6089 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2501 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 ____sys_sendmsg+0x6eb/0x810 net/socket.c:2492 ___sys_sendmsg+0xf3/0x170 net/socket.c:2546 __sys_sendmsg net/socket.c:2575 [inline] __do_sys_sendmsg net/socket.c:2584 [inline] __se_sys_sendmsg net/socket.c:2582 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2582 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f416e0f2549 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f416e0a02e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f416e17b4e0 RCX: 00007f416e0f2549 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 00007f416e1485ac R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000401 R11: 0000000000000246 R12: 00007f416e17b4ec R13: 00007f416e0a02f0 R14: 00007f416e17b4e8 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:rlb_req_update_slave_clients+0x109/0x2f0 drivers/net/bonding/bond_alb.c:502 Code: 5d 18 8f fc 41 80 3e 00 0f 85 a5 01 00 00 89 d8 48 c1 e0 06 49 03 84 24 68 01 00 00 48 8d 78 30 49 89 c7 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 98 01 00 00 4d 39 6f 30 75 83 e8 22 18 8f fc 49 RSP: 0018:ffffc90005baee80 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff84eb6bf3 RDI: 0000000000000030 RBP: dffffc0000000000 R08: 0000000000000005 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801d228c80 R13: ffff88801c169800 R14: ffffed1003a451bd R15: 0000000000000000 FS: 00007f416e0a0700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f416e160260 CR3: 00000000686f3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 5d pop %rbp 1: 18 8f fc 41 80 3e sbb %cl,0x3e8041fc(%rdi) 7: 00 0f add %cl,(%rdi) 9: 85 a5 01 00 00 89 test %esp,-0x76ffffff(%rbp) f: d8 48 c1 fmuls -0x3f(%rax) 12: e0 06 loopne 0x1a 14: 49 03 84 24 68 01 00 add 0x168(%r12),%rax 1b: 00 1c: 48 8d 78 30 lea 0x30(%rax),%rdi 20: 49 89 c7 mov %rax,%r15 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 2a 00 cmpb $0x0,(%rdx,%rbp,1) <-- trapping instruction 2e: 0f 85 98 01 00 00 jne 0x1cc 34: 4d 39 6f 30 cmp %r13,0x30(%r15) 38: 75 83 jne 0xffffffbd 3a: e8 22 18 8f fc callq 0xfc8f1861 3f: 49 rex.WB