loop3: detected capacity change from 0 to 72 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop3): error, invalid access to FAT (entry 0x0891e5f8) FAT-fs (loop3): Filesystem has been set read-only Oops: general protection fault, probably for non-canonical address 0xdffffc000000002e: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000170-0x0000000000000177] CPU: 0 UID: 0 PID: 4174 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+0x28a/0x5a0 Code: 02 00 00 4c 8b 65 28 4d 85 e4 74 43 e8 7f 56 30 00 49 8d bc 24 78 01 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 f7 02 00 00 49 8b 9c 24 78 01 00 00 bf 08 00 00 RSP: 0018:ffff8880142679f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc900009f0000 RDX: 000000000000002e RSI: ffffffff8144dd61 RDI: 0000000000000174 RBP: ffff88800d203958 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: fffffffffffffffc R13: ffff88801666841c R14: ffff88800c4e5040 R15: ffff888016133ff8 FS: 00007f39e6aa3700(0000) GS:ffff8880e538f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555582f89c58 CR3: 000000000fc01000 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: 0033:0x7f39e954eb19 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:00007f39e6aa3188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f39e9662020 RCX: 00007f39e954eb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020005880 RBP: 00007f39e95a8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffedfc4cb9f R14: 00007f39e6aa3300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:nsproxy_free+0x28a/0x5a0 Code: 02 00 00 4c 8b 65 28 4d 85 e4 74 43 e8 7f 56 30 00 49 8d bc 24 78 01 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 f7 02 00 00 49 8b 9c 24 78 01 00 00 bf 08 00 00 RSP: 0018:ffff8880142679f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc900009f0000 RDX: 000000000000002e RSI: ffffffff8144dd61 RDI: 0000000000000174 RBP: ffff88800d203958 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: fffffffffffffffc R13: ffff88801666841c R14: ffff88800c4e5040 R15: ffff888016133ff8 FS: 00007f39e6aa3700(0000) GS:ffff8880e538f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555582f89c58 CR3: 000000000fc01000 CR4: 0000000000350ef0 FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop2: detected capacity change from 0 to 7 EXT4-fs (loop2): VFS: Can't find ext4 filesystem loop4: detected capacity change from 0 to 184 UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list iso9660: Unknown parameter 'V]kx(IBa^6qzvi͞.em :B (JM™ypԉquSWE;Z*7y|~zp#2ԩw҅@vkZ Pi_N )n尢&)g):' loop2: detected capacity change from 0 to 7 EXT4-fs (loop2): VFS: Can't find ext4 filesystem mac80211_hwsim hwsim7 wlan0: entered promiscuous mode mac80211_hwsim hwsim7 wlan0: entered allmulticast mode loop4: detected capacity change from 0 to 184 iso9660: Unknown parameter 'V]kx(IBa^6qzvi͞.em :B (JM™ypԉquSWE;Z*7y|~zp#2ԩw҅@vkZ Pi_N )n尢&)g):' ---------------- Code disassembly (best guess): 0: 02 00 add (%rax),%al 2: 00 4c 8b 65 add %cl,0x65(%rbx,%rcx,4) 6: 28 4d 85 sub %cl,-0x7b(%rbp) 9: e4 74 in $0x74,%al b: 43 e8 7f 56 30 00 rex.XB callq 0x305690 11: 49 8d bc 24 78 01 00 lea 0x178(%r12),%rdi 18: 00 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 f7 02 00 00 jne 0x32b 34: 49 8b 9c 24 78 01 00 mov 0x178(%r12),%rbx 3b: 00 3c: bf .byte 0xbf 3d: 08 00 or %al,(%rax)