Oops: general protection fault, probably for non-canonical address 0xdffffc0004200006: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000000021000030-0x0000000021000037] CPU: 1 UID: 0 PID: 4092 Comm: syz-executor.7 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+0x13d/0x5a0 Code: 0f 85 40 04 00 00 4c 8b 65 30 4d 85 e4 74 41 e8 c9 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 30 04 00 00 49 8b 5c 24 30 bf 08 00 00 00 48 89 RSP: 0018:ffff888049d5f9f8 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000005 RCX: ffffc900013eb000 RDX: 0000000004200006 RSI: ffffffff8144dc17 RDI: 0000000021000030 RBP: ffff88801dd91410 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: 0000000021000000 R13: ffff8880173501b4 R14: ffff88801e9a4820 R15: ffff88800a2bdbb8 FS: 00007f6b313de700(0000) GS:ffff8880e548f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555560ed63bc CR3: 000000000d34b000 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: 0033:0x7f6b33e89b19 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:00007f6b313de188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f6b33f9d020 RCX: 00007f6b33e89b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020005880 RBP: 00007f6b33ee3f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc70934faf R14: 00007f6b313de300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:nsproxy_free+0x13d/0x5a0 Code: 0f 85 40 04 00 00 4c 8b 65 30 4d 85 e4 74 41 e8 c9 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 30 04 00 00 49 8b 5c 24 30 bf 08 00 00 00 48 89 RSP: 0018:ffff888049d5f9f8 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000005 RCX: ffffc900013eb000 RDX: 0000000004200006 RSI: ffffffff8144dc17 RDI: 0000000021000030 RBP: ffff88801dd91410 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: 0000000021000000 R13: ffff8880173501b4 R14: ffff88801e9a4820 R15: ffff88800a2bdbb8 FS: 00007f6b313de700(0000) GS:ffff8880e548f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555560ed63bc CR3: 000000000d34b000 CR4: 0000000000350ef0 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x800 phys_seg 3 prio class 2 Buffer I/O error on dev sr0, logical block 0, lost async page write Buffer I/O error on dev sr0, logical block 1, lost async page write Buffer I/O error on dev sr0, logical block 2, lost async page write Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci0: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout loop1: detected capacity change from 0 to 512 ext4: Unknown parameter 'ÿÿÿÿÿÿ' audit: type=1400 audit(1763282561.590:11): avc: denied { read } for pid=4124 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 ---------------- Code disassembly (best guess): 0: 0f 85 40 04 00 00 jne 0x446 6: 4c 8b 65 30 mov 0x30(%rbp),%r12 a: 4d 85 e4 test %r12,%r12 d: 74 41 je 0x50 f: e8 c9 57 30 00 callq 0x3057dd 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 30 04 00 00 jne 0x464 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