Oops: general protection fault, probably for non-canonical address 0xdffffc0000000198: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000cc0-0x0000000000000cc7] CPU: 0 UID: 0 PID: 9610 Comm: syz-executor150 Not tainted 6.14.0-13408-g9f867ba24d36 #1 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 RIP: 0010:netdev_need_ops_lock data/ghui/docker_data/linux_kernel/upstream/linux/include/net/netdev_lock.h:30 [inline] RIP: 0010:netdev_lock_ops data/ghui/docker_data/linux_kernel/upstream/linux/include/net/netdev_lock.h:41 [inline] RIP: 0010:addrconf_add_ifaddr+0x15d/0x420 data/ghui/docker_data/linux_kernel/upstream/linux/net/ipv6/addrconf.c:3157 Code: 8b b4 24 94 00 00 00 4c 89 ef e8 7e 4c 2f ff 4c 8d b0 c5 0c 00 00 48 89 c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 34 02 00 00 RSP: 0018:ffffc9001784faa0 EFLAGS: 00010213 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000198 RSI: ffffffff893162f2 RDI: ffffffff9adac1f8 RBP: ffffc9001784fbb0 R08: 0000000000000000 R09: fffffbfff20cbbe2 R10: ffffc9001784faa0 R11: 0000000000000000 R12: 1ffff92002f09f54 R13: ffffffff9adabec0 R14: 0000000000000cc5 R15: ffffffff9adabec0 FS: 0000555579deb3c0(0000) GS:ffff8880cefd9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000054 CR3: 00000000302c0000 CR4: 0000000000350ef0 Call Trace: <TASK> inet6_ioctl+0x108/0x2a0 data/ghui/docker_data/linux_kernel/upstream/linux/net/ipv6/af_inet6.c:580 sock_do_ioctl+0xdc/0x260 data/ghui/docker_data/linux_kernel/upstream/linux/net/socket.c:1190 sock_ioctl+0x239/0x6a0 data/ghui/docker_data/linux_kernel/upstream/linux/net/socket.c:1311 vfs_ioctl data/ghui/docker_data/linux_kernel/upstream/linux/fs/ioctl.c:51 [inline] __do_sys_ioctl data/ghui/docker_data/linux_kernel/upstream/linux/fs/ioctl.c:906 [inline] __se_sys_ioctl data/ghui/docker_data/linux_kernel/upstream/linux/fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x194/0x200 data/ghui/docker_data/linux_kernel/upstream/linux/fs/ioctl.c:892 do_syscall_x64 data/ghui/docker_data/linux_kernel/upstream/linux/arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcb/0x250 data/ghui/docker_data/linux_kernel/upstream/linux/arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f959b04f6cd Code: c3 e8 a7 1f 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 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:00007ffd61d9c398 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffd61d9c5f8 RCX: 00007f959b04f6cd RDX: 0000000020000040 RSI: 0000000000008916 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd61d9be00 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 00007f959b0cc4f0 R15: 0000000000000001 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:netdev_need_ops_lock data/ghui/docker_data/linux_kernel/upstream/linux/include/net/netdev_lock.h:30 [inline] RIP: 0010:netdev_lock_ops data/ghui/docker_data/linux_kernel/upstream/linux/include/net/netdev_lock.h:41 [inline] RIP: 0010:addrconf_add_ifaddr+0x15d/0x420 data/ghui/docker_data/linux_kernel/upstream/linux/net/ipv6/addrconf.c:3157 Code: 8b b4 24 94 00 00 00 4c 89 ef e8 7e 4c 2f ff 4c 8d b0 c5 0c 00 00 48 89 c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 34 02 00 00 RSP: 0018:ffffc9001784faa0 EFLAGS: 00010213 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000198 RSI: ffffffff893162f2 RDI: ffffffff9adac1f8 RBP: ffffc9001784fbb0 R08: 0000000000000000 R09: fffffbfff20cbbe2 R10: ffffc9001784faa0 R11: 0000000000000000 R12: 1ffff92002f09f54 R13: ffffffff9adabec0 R14: 0000000000000cc5 R15: ffffffff9adabec0 FS: 0000555579deb3c0(0000) GS:ffff8880cefd9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000054 CR3: 00000000302c0000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 8b b4 24 94 00 00 00 mov 0x94(%rsp),%esi 7: 4c 89 ef mov %r13,%rdi a: e8 7e 4c 2f ff call 0xff2f4c8d f: 4c 8d b0 c5 0c 00 00 lea 0xcc5(%rax),%r14 16: 48 89 c3 mov %rax,%rbx 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 f2 mov %r14,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 4c 89 f2 mov %r14,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 08 jg 0x40 38: 84 c0 test %al,%al 3a: 0f 85 34 02 00 00 jne 0x274