RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00007f55badc71d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe5fee268f R14: 00007f55badc7300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 PID: 6534 Comm: syz-executor.0 Not tainted 5.10.77-syzkaller-01258-g76698ea35fd3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tipc_aead_key_size include/uapi/linux/tipc.h:254 [inline] RIP: 0010:tipc_crypto_key_xmit net/tipc/crypto.c:2235 [inline] RIP: 0010:tipc_crypto_key_distr+0x3ec/0xba0 net/tipc/crypto.c:2201 Code: 8a 04 38 84 c0 0f 85 be 05 00 00 66 c7 84 24 d0 00 00 00 00 00 48 8b 44 24 20 48 8d 58 20 48 89 d8 48 c1 e8 03 48 89 44 24 48 <42> 8a 04 38 84 c0 0f 85 b0 05 00 00 8b 03 83 c0 24 44 0f b7 f8 41 RSP: 0018:ffffc900012a7200 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000000020 RCX: 00000000012a7201 RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc900012a72a8 RBP: ffffc900012a7350 R08: dffffc0000000000 R09: ffffc900012a7290 R10: fffff52000254e55 R11: 0000000000000000 R12: ffffc900012a7290 R13: ffff8881158f1800 R14: ffffc900012a72d0 R15: dffffc0000000000 FS: 00007f55badc7700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e221000 CR3: 0000000152dcb000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __tipc_nl_node_set_key net/tipc/node.c:2973 [inline] tipc_nl_node_set_key+0x87d/0xaa0 net/tipc/node.c:2988 genl_family_rcv_msg_doit net/netlink/genetlink.c:739 [inline] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x102b/0x1480 net/netlink/genetlink.c:800 netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2502 genl_rcv+0x28/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x814/0x9f0 net/netlink/af_netlink.c:1337 netlink_sendmsg+0xa20/0xe00 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x5b9/0x910 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmsg+0x384/0x470 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f55bd050ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f55badc7188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f55bd163f60 RCX: 00007f55bd050ae9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00007f55badc71d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffe5fee268f R14: 00007f55badc7300 R15: 0000000000022000 Modules linked in: ---[ end trace 8a62344245b2e390 ]--- RIP: 0010:tipc_aead_key_size include/uapi/linux/tipc.h:254 [inline] RIP: 0010:tipc_crypto_key_xmit net/tipc/crypto.c:2235 [inline] RIP: 0010:tipc_crypto_key_distr+0x3ec/0xba0 net/tipc/crypto.c:2201 Code: 8a 04 38 84 c0 0f 85 be 05 00 00 66 c7 84 24 d0 00 00 00 00 00 48 8b 44 24 20 48 8d 58 20 48 89 d8 48 c1 e8 03 48 89 44 24 48 <42> 8a 04 38 84 c0 0f 85 b0 05 00 00 8b 03 83 c0 24 44 0f b7 f8 41 RSP: 0018:ffffc900012a7200 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 0000000000000020 RCX: 00000000012a7201 RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc900012a72a8 RBP: ffffc900012a7350 R08: dffffc0000000000 R09: ffffc900012a7290 R10: fffff52000254e55 R11: 0000000000000000 R12: ffffc900012a7290 R13: ffff8881158f1800 R14: ffffc900012a72d0 R15: dffffc0000000000 FS: 00007f55badc7700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f55bcff7b11 CR3: 0000000152dcb000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8a 04 38 mov (%rax,%rdi,1),%al 3: 84 c0 test %al,%al 5: 0f 85 be 05 00 00 jne 0x5c9 b: 66 c7 84 24 d0 00 00 movw $0x0,0xd0(%rsp) 12: 00 00 00 15: 48 8b 44 24 20 mov 0x20(%rsp),%rax 1a: 48 8d 58 20 lea 0x20(%rax),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 48 89 44 24 48 mov %rax,0x48(%rsp) * 2a: 42 8a 04 38 mov (%rax,%r15,1),%al <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 b0 05 00 00 jne 0x5e6 36: 8b 03 mov (%rbx),%eax 38: 83 c0 24 add $0x24,%eax 3b: 44 0f b7 f8 movzwl %ax,%r15d 3f: 41 rex.B