general protection fault in inet

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in inet_gifconf net				3	1527d	1571d	0/28	auto-closed as invalid on 2020/12/28 06:15
linux-4.19	general protection fault in inet_gifconf				2	1548d	1568d	0/1	auto-closed as invalid on 2021/01/05 22:05

kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 2338 Comm: syz-executor.1 Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__in_dev_get_rtnl include/linux/inetdevice.h:237 [inline] RIP: 0010:inet_gifconf+0xdd/0x380 net/ipv4/devinet.c:1212 Code: d9 d6 7d fa 45 84 e4 0f 84 42 02 00 00 e8 9b d5 7d fa 48 8d bb 38 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 02 00 00 89 ee bf 28 00 00 00 48 8b 9b 38 03 RSP: 0018:ffff88822b45fa30 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffffffffffffb0 RCX: ffffc90007e35000 RDX: 000000000000005d RSI: ffffffff86e4bd25 RDI: 00000000000002e8 RBP: 0000000000000028 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: 00000000000008c0 R14: 00000000004379e0 R15: ffffffffffffffb0 FS: 00007f9f240e7700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000005400c8 CR3: 000000009eb56000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dev_ifconf+0xdb/0x230 net/core/dev_ioctl.c:80 sock_do_ioctl+0x228/0x300 net/socket.c:1029 sock_ioctl+0x2ef/0x5d0 net/socket.c:1135 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665f9 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:00007f9f240e7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000400308 RSI: 0000000000008912 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe8245beaf R14: 00007f9f240e7300 R15: 0000000000022000 Modules linked in: ---[ end trace 4e8cbf62595ef3df ]--- RIP: 0010:__in_dev_get_rtnl include/linux/inetdevice.h:237 [inline] RIP: 0010:inet_gifconf+0xdd/0x380 net/ipv4/devinet.c:1212 Code: d9 d6 7d fa 45 84 e4 0f 84 42 02 00 00 e8 9b d5 7d fa 48 8d bb 38 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 02 00 00 89 ee bf 28 00 00 00 48 8b 9b 38 03 RSP: 0018:ffff88822b45fa30 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffffffffffffb0 RCX: ffffc90007e35000 RDX: 000000000000005d RSI: ffffffff86e4bd25 RDI: 00000000000002e8 RBP: 0000000000000028 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: 00000000000008c0 R14: 00000000004379e0 R15: ffffffffffffffb0 FS: 00007f9f240e7700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f302b560000 CR3: 000000009eb56000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 7d fa jge 0xfffffffc 2: 45 84 e4 test %r12b,%r12b 5: 0f 84 42 02 00 00 je 0x24d b: e8 9b d5 7d fa callq 0xfa7dd5ab 10: 48 8d bb 38 03 00 00 lea 0x338(%rbx),%rdi 17: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1e: fc ff df 21: 48 89 fa mov %rdi,%rdx 24: 48 c1 ea 03 shr $0x3,%rdx * 28: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2c: 0f 85 7f 02 00 00 jne 0x2b1 32: 89 ee mov %ebp,%esi 34: bf 28 00 00 00 mov $0x28,%edi 39: 48 rex.W 3a: 8b .byte 0x8b 3b: 9b fwait 3c: 38 03 cmp %al,(%rbx)