RBP: 00007f15ceb1f120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007f15cdf9bf80 R15: 00007ffd40a6adb8 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 32249 Comm: syz-executor.3 Not tainted 6.6.0-rc1-next-20230912-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:strchr+0x1b/0xb0 lib/string.c:329 Code: 3f aa f7 48 8b 74 24 08 48 8b 14 24 eb 89 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 c1 ea 03 53 48 83 ec 10 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 07 89 RSP: 0018:ffffc9001679f0d8 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000b700000 RDX: 0000000000000000 RSI: 0000000000000025 RDI: 0000000000000000 RBP: ffffc9001679f168 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc9001679f168 R13: 0000000000000cc0 R14: ffff88801827df00 R15: 0000000000000001 FS: 00007f15ceb1f6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020043000 CR3: 000000008cbbf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvasprintf_const+0x25/0x190 lib/kasprintf.c:45 kobject_set_name_vargs+0x5a/0x130 lib/kobject.c:272 kobject_add_varg lib/kobject.c:366 [inline] kobject_add+0x12a/0x240 lib/kobject.c:424 device_add+0x290/0x1ac0 drivers/base/core.c:3560 netdev_register_kobject+0x183/0x3f0 net/core/net-sysfs.c:2044 register_netdevice+0xbcb/0x1490 net/core/dev.c:10136 ipvlan_link_new+0x365/0xc00 drivers/net/ipvlan/ipvlan_main.c:586 rtnl_newlink_create net/core/rtnetlink.c:3485 [inline] __rtnl_newlink+0x1177/0x1940 net/core/rtnetlink.c:3705 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3718 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6444 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0x536/0x810 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:753 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2541 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2595 __sys_sendmsg+0x117/0x1e0 net/socket.c:2624 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f15cde7cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f15ceb1f0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f15cdf9bf80 RCX: 00007f15cde7cae9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007f15ceb1f120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007f15cdf9bf80 R15: 00007ffd40a6adb8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:strchr+0x1b/0xb0 lib/string.c:329 Code: 3f aa f7 48 8b 74 24 08 48 8b 14 24 eb 89 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 c1 ea 03 53 48 83 ec 10 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 07 89 RSP: 0018:ffffc9001679f0d8 EFLAGS: 00010286 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000b700000 RDX: 0000000000000000 RSI: 0000000000000025 RDI: 0000000000000000 RBP: ffffc9001679f168 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc9001679f168 R13: 0000000000000cc0 R14: ffff88801827df00 R15: 0000000000000001 FS: 00007f15ceb1f6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000201bc030 CR3: 000000008cbbf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: aa stos %al,%es:(%rdi) 1: f7 48 8b 74 24 08 48 testl $0x48082474,-0x75(%rax) 8: 8b 14 24 mov (%rsp),%edx b: eb 89 jmp 0xffffff96 d: 90 nop e: f3 0f 1e fa endbr64 12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 19: fc ff df 1c: 48 89 fa mov %rdi,%rdx 1f: 55 push %rbp 20: 48 c1 ea 03 shr $0x3,%rdx 24: 53 push %rbx 25: 48 83 ec 10 sub $0x10,%rsp * 29: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2d: 48 89 fa mov %rdi,%rdx 30: 83 e2 07 and $0x7,%edx 33: 38 d0 cmp %dl,%al 35: 7f 04 jg 0x3b 37: 84 c0 test %al,%al 39: 75 51 jne 0x8c 3b: 0f b6 07 movzbl (%rdi),%eax 3e: 89 .byte 0x89