FAT-fs (loop3): unable to read boot sector ext4: Unknown parameter '¼q¡&`ÕMÖýß•Ç@’eü÷—U' cgroup: noprefix used incorrectly loop5: detected capacity change from 0 to 1024 ext4: Unknown parameter '¼q¡&`ÕMÖýß•Ç@’eü÷—U' Oops: general protection fault, probably for non-canonical address 0xdffffc000000002e: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000170-0x0000000000000177] CPU: 1 UID: 0 PID: 3946 Comm: syz-executor.4 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:ffff8880162879f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc9000966c000 RDX: 000000000000002e RSI: ffffffff8144dd61 RDI: 0000000000000174 RBP: ffff88800974fdd0 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: fffffffffffffffc R13: ffff88800e92261c R14: ffff888016d8c410 R15: ffff888049018878 FS: 00007f7f8aa74700(0000) GS:ffff8880e548f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c010b53000 CR3: 000000000f1a7000 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: 0033:0x7f7f8d540b19 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:00007f7f8aa74188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f7f8d6540e0 RCX: 00007f7f8d540b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020005880 RBP: 00007f7f8d59af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff675ef78f R14: 00007f7f8aa74300 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:ffff8880162879f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc9000966c000 RDX: 000000000000002e RSI: ffffffff8144dd61 RDI: 0000000000000174 RBP: ffff88800974fdd0 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: fffffffffffffffc R13: ffff88800e92261c R14: ffff888016d8c410 R15: ffff888049018878 FS: 00007f7f8aa74700(0000) GS:ffff8880e548f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c010b53000 CR3: 000000000f1a7000 CR4: 0000000000350ef0 syz-executor.7 (3929) used greatest stack depth: 24048 bytes left loop3: detected capacity change from 0 to 512 ext4: Unknown parameter 'ð' loop3: detected capacity change from 0 to 512 ext4: Unknown parameter 'ð' loop4: detected capacity change from 0 to 1024 EXT4-fs error (device loop4): ext4_quota_enable:7137: inode #4: comm syz-executor.4: iget: special inode unallocated EXT4-fs error (device loop4): ext4_quota_enable:7139: comm syz-executor.4: Bad quota inode: 4, type: 1 EXT4-fs warning (device loop4): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix. loop1: detected capacity change from 0 to 2048 EXT4-fs (loop4): mount failed mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop4: detected capacity change from 0 to 1024 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium EXT4-fs error (device loop4): ext4_quota_enable:7137: inode #4: comm syz-executor.4: iget: special inode unallocated EXT4-fs error (device loop4): ext4_quota_enable:7139: comm syz-executor.4: Bad quota inode: 4, type: 1 EXT4-fs warning (device loop4): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix. EXT4-fs (loop4): mount failed EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop2: detected capacity change from 0 to 64 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop4: detected capacity change from 0 to 1024 EXT4-fs error (device loop4): ext4_quota_enable:7137: inode #4: comm syz-executor.4: iget: special inode unallocated EXT4-fs error (device loop4): ext4_quota_enable:7139: comm syz-executor.4: Bad quota inode: 4, type: 1 EXT4-fs warning (device loop4): ext4_enable_quotas:7177: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix. EXT4-fs (loop4): mount failed mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium 9p: Could not find request transport: xen 9p: Could not find request transport: xen ---------------- 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)