Oops: general protection fault, probably for non-canonical address 0xfbd59c00000cad93: 0000 [#1] SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xdead000000656c98-0xdead000000656c9f] CPU: 0 UID: 0 PID: 3944 Comm: syz-executor.5 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:ffff888018b179f8 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffc90004c03000 RDX: 1bd5a000000cad93 RSI: ffffffff8144dc17 RDI: dead000000656c99 RBP: ffff88800cdf4d68 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: dead000000656c69 R13: ffff88801f87c764 R14: ffffffff85cfdf20 R15: ffff88800f868878 FS: 00007f71f1e9b700(0000) GS:ffff8880e538f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe36c56c3a4 CR3: 000000000d148000 CR4: 0000000000350ef0 Call Trace: create_new_namespaces+0x585/0x750 copy_namespaces+0x45c/0x580 copy_process+0x26e4/0x72a0 syz-executor.1 calls setitimer() with new_value NULL pointer. Misfeature support will be removed kernel_clone+0xea/0x7f0 __do_sys_clone3+0x1f5/0x280 do_syscall_64+0xbf/0x430 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f71f4925b19 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:00007f71f1e9b188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f71f4a38f60 RCX: 00007f71f4925b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000240 RBP: 00007f71f497ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffee6fc9e5f R14: 00007f71f1e9b300 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:ffff888018b179f8 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffc90004c03000 RDX: 1bd5a000000cad93 RSI: ffffffff8144dc17 RDI: dead000000656c99 RBP: ffff88800cdf4d68 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: dead000000656c69 R13: ffff88801f87c764 R14: ffffffff85cfdf20 R15: ffff88800f868878 FS: 00007f71f1e9b700(0000) GS:ffff8880e538f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe36c56c3a4 CR3: 000000000d148000 CR4: 0000000000350ef0 audit: type=1400 audit(1763367560.646:10): avc: denied { write } for pid=3958 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop5: detected capacity change from 0 to 64 loop5: detected capacity change from 0 to 64 Invalid ELF header magic: != ELF audit: type=1400 audit(1763367560.867:11): avc: denied { module_load } for pid=3979 comm="syz-executor.4" path=2F6D656D66643A2F70726F632F7468726561642D73656C662F617474722F6673637265617465202864656C6574656429 dev="tmpfs" ino=1025 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=system permissive=1 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 Invalid ELF header magic: != ELF Bluetooth: hci7: command 0x0406 tx timeout loop5: detected capacity change from 0 to 16 loop0: detected capacity change from 0 to 184 EXT4-fs (loop5): filesystem too large to mount safely on this system ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1472). ext3: Unknown parameter '¶' Invalid ELF header magic: != ELF ext3: Unknown parameter '¶' 9p: Bad value for 'wfdno' loop0: detected capacity change from 0 to 184 ISOFS: Interleaved files not (yet) supported. ISOFS: File unit size != 0 for ISO file (1472). ext3: Unknown parameter '¶' loop5: detected capacity change from 0 to 16 EXT4-fs (loop5): filesystem too large to mount safely on this system ---------------- 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