loop2: detected capacity change from 0 to 264192 vfat: Unknown parameter 'iso9660' Oops: general protection fault, probably for non-canonical address 0xe02b3c3340000012: 0000 [#1] SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0x015a019a00000090-0x015a019a00000097] CPU: 1 UID: 0 PID: 4235 Comm: syz-executor.1 Not tainted 6.18.0-rc5-next-20251114 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:nsproxy_free+0x1ab/0x5a0 Code: 0f 85 b4 03 00 00 4c 8b 65 38 4d 85 e4 74 41 e8 5b 57 30 00 49 8d 7c 24 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b8 03 00 00 49 8b 5c 24 30 bf 08 00 00 00 48 89 RSP: 0018:ffff8880490b79f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90000a8f000 RDX: 002b403340000012 RSI: ffffffff8144dc85 RDI: 015a019a00000094 RBP: ffff88800e277a28 R08: 0000000000000001 R09: ffffed1003d24019 R10: 0000000000000016 R11: ffff88806cf37498 R12: 015a019a00000064 R13: ffff888018e40fec R14: ffffffff85cfdf20 R15: ffff8880163a8878 FS: 00007ffae093a700(0000) GS:ffff8880e548f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faee51df6f4 CR3: 000000000e4e7000 CR4: 0000000000350ef0 Call Trace: create_new_namespaces+0x585/0x750 copy_namespaces+0x45c/0x580 copy_process+0x26e4/0x72a0 kernel_clone+0xea/0x7f0 __do_sys_clone3+0x1f5/0x280 do_syscall_64+0xbf/0x430 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ffae33e5b19 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:00007ffae093a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007ffae34f9020 RCX: 00007ffae33e5b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020005880 RBP: 00007ffae343ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff681083f R14: 00007ffae093a300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:nsproxy_free+0x1ab/0x5a0 Code: 0f 85 b4 03 00 00 4c 8b 65 38 4d 85 e4 74 41 e8 5b 57 30 00 49 8d 7c 24 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b8 03 00 00 49 8b 5c 24 30 bf 08 00 00 00 48 89 RSP: 0018:ffff8880490b79f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90000a8f000 RDX: 002b403340000012 RSI: ffffffff8144dc85 RDI: 015a019a00000094 RBP: ffff88800e277a28 R08: 0000000000000001 R09: ffffed1003d24019 R10: 0000000000000016 R11: ffff88806cf37498 R12: 015a019a00000064 R13: ffff888018e40fec R14: ffffffff85cfdf20 R15: ffff8880163a8878 FS: 00007ffae093a700(0000) GS:ffff8880e548f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faee51df6f4 CR3: 000000000e4e7000 CR4: 0000000000350ef0 Zero length message leads to an empty skb ---------------- Code disassembly (best guess): 0: 0f 85 b4 03 00 00 jne 0x3ba 6: 4c 8b 65 38 mov 0x38(%rbp),%r12 a: 4d 85 e4 test %r12,%r12 d: 74 41 je 0x50 f: e8 5b 57 30 00 callq 0x30576f 14: 49 8d 7c 24 30 lea 0x30(%r12),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 b8 03 00 00 jne 0x3ec 34: 49 8b 5c 24 30 mov 0x30(%r12),%rbx 39: bf 08 00 00 00 mov $0x8,%edi 3e: 48 rex.W 3f: 89 .byte 0x89