Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe03a: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x00000000ffff01d0-0x00000000ffff01d7] CPU: 1 UID: 0 PID: 14650 Comm: syz.1.2485 Not tainted 6.16.0-rc3-syzkaller-00116-ge34a79b96ab9 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:____ip_mc_inc_group+0x128/0x10f0 net/ipv4/igmp.c:1516 Code: 1e 98 bb f7 8b 44 24 08 85 c0 0f 85 cd 01 00 00 e8 cd 9c bb f7 4a 8d 1c eb 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 3b 0e 00 00 48 8b 1b 48 85 db 0f 84 38 02 00 00 RSP: 0018:ffffc900030b7ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 00000000ffff01d0 RCX: ffffffff8a008582 RDX: 000000001fffe03a RSI: ffffffff8a0083a3 RDI: 0000000000000001 RBP: ffff88805d673400 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8222c814 R12: 00000000020000e0 R13: 000000000000003a R14: 1ffff92000616f5f R15: 00000000fffffff2 FS: 00007fc9d4ca16c0(0000) GS:ffff888124852000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000180 CR3: 000000004c9da000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000097 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __ip_mc_join_group+0x451/0x600 net/ipv4/igmp.c:2305 do_ip_setsockopt+0x2e65/0x3240 net/ipv4/ip_sockglue.c:1310 ip_setsockopt+0x59/0xf0 net/ipv4/ip_sockglue.c:1417 tcp_setsockopt+0xa4/0x100 net/ipv4/tcp.c:4108 do_sock_setsockopt+0x224/0x470 net/socket.c:2296 __sys_setsockopt+0x1a0/0x230 net/socket.c:2321 __do_sys_setsockopt net/socket.c:2327 [inline] __se_sys_setsockopt net/socket.c:2324 [inline] __x64_sys_setsockopt+0xbd/0x160 net/socket.c:2324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc9d3d8e929 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc9d4ca1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fc9d3fb5fa0 RCX: 00007fc9d3d8e929 RDX: 0000000000000027 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fc9d3e10b39 R08: 000000000000000c R09: 0000000000000000 R10: 0000200000000180 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc9d3fb5fa0 R15: 00007fffdf1b5f78 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:____ip_mc_inc_group+0x128/0x10f0 net/ipv4/igmp.c:1516 Code: 1e 98 bb f7 8b 44 24 08 85 c0 0f 85 cd 01 00 00 e8 cd 9c bb f7 4a 8d 1c eb 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 3b 0e 00 00 48 8b 1b 48 85 db 0f 84 38 02 00 00 RSP: 0018:ffffc900030b7ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 00000000ffff01d0 RCX: ffffffff8a008582 RDX: 000000001fffe03a RSI: ffffffff8a0083a3 RDI: 0000000000000001 RBP: ffff88805d673400 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8222c814 R12: 00000000020000e0 R13: 000000000000003a R14: 1ffff92000616f5f R15: 00000000fffffff2 FS: 00007fc9d4ca16c0(0000) GS:ffff888124852000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8d87380ab8 CR3: 000000004c9da000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000097 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 8b 44 24 08 mov 0x8(%rsp),%eax 4: 85 c0 test %eax,%eax 6: 0f 85 cd 01 00 00 jne 0x1d9 c: e8 cd 9c bb f7 call 0xf7bb9cde 11: 4a 8d 1c eb lea (%rbx,%r13,8),%rbx 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 da mov %rbx,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx * 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2a: 0f 85 3b 0e 00 00 jne 0xe6b 30: 48 8b 1b mov (%rbx),%rbx 33: 48 85 db test %rbx,%rbx 36: 0f 84 38 02 00 00 je 0x274