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: 7085 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:ffff888016a1f9f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90002e08000 RDX: 000000000000002e RSI: ffffffff8144dd61 RDI: 0000000000000174 RBP: ffff88800c5eae38 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: fffffffffffffffc R13: ffff888047a4681c R14: ffff88803af00410 R15: ffff88800aa5bff8 FS: 00007f09a72fd700(0000) GS:ffff8880e538f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020087000 CR3: 000000003a3e5000 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: 0033:0x7f09a9da8b19 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:00007f09a72fd188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f09a9ebc020 RCX: 00007f09a9da8b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020005880 RBP: 00007f09a9e02f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdcd5a4daf R14: 00007f09a72fd300 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:ffff888016a1f9f8 EFLAGS: 00010217 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90002e08000 RDX: 000000000000002e RSI: ffffffff8144dd61 RDI: 0000000000000174 RBP: ffff88800c5eae38 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8664ed57 R11: 0000000000000001 R12: fffffffffffffffc R13: ffff888047a4681c R14: ffff88803af00410 R15: ffff88800aa5bff8 FS: 00007f09a72fd700(0000) GS:ffff8880e538f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020087000 CR3: 000000003a3e5000 CR4: 0000000000350ef0 Bluetooth: hci1: command 0x0c1a tx timeout audit: type=1326 audit(1763109878.544:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7147 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fc9de68eb19 code=0x0 loop3: detected capacity change from 0 to 4 EXT4-fs (loop3): VFS: Can't find ext4 filesystem loop3: detected capacity change from 0 to 4 EXT4-fs (loop3): VFS: Can't find ext4 filesystem loop3: detected capacity change from 0 to 4 EXT4-fs (loop3): VFS: Can't find ext4 filesystem loop3: detected capacity change from 0 to 4 audit: type=1326 audit(1763109880.182:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 EXT4-fs (loop3): VFS: Can't find ext4 filesystem audit: type=1326 audit(1763109880.189:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=30 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 audit: type=1326 audit(1763109880.189:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 audit: type=1326 audit(1763109880.189:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=99 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 audit: type=1326 audit(1763109880.190:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 loop3: detected capacity change from 0 to 4 audit: type=1326 audit(1763109880.191:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=16 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 EXT4-fs (loop3): VFS: Can't find ext4 filesystem audit: type=1326 audit(1763109880.191:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 audit: type=1326 audit(1763109880.195:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=16 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 audit: type=1326 audit(1763109880.195:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=7258 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fc46e454b19 code=0x7ffc0000 UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list capability: warning: `syz-executor.2' uses 32-bit capabilities (legacy support in use) netlink: 104 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 104 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 104 bytes leftover after parsing attributes in process `syz-executor.4'. loop2: detected capacity change from 0 to 4100 loop2: detected capacity change from 0 to 4100 netlink: 104 bytes leftover after parsing attributes in process `syz-executor.4'. mmap: syz-executor.3 (7427) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. syz_tun: entered allmulticast mode mac80211_hwsim hwsim10 wlan1: entered promiscuous mode mac80211_hwsim hwsim10 wlan1: left promiscuous mode syz_tun: left allmulticast mode syz_tun: entered allmulticast mode mac80211_hwsim hwsim10 wlan1: entered promiscuous mode mac80211_hwsim hwsim10 wlan1: left promiscuous mode syz_tun: left allmulticast mode sr 1:0:0:0: [sr0] tag#0 unaligned transfer blk_print_req_error: 928 callbacks suppressed I/O error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x800 phys_seg 3 prio class 2 buffer_io_error: 926 callbacks suppressed 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 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 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 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 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 Bluetooth: MGMT ver 1.23 netlink: 'syz-executor.7': attribute type 16 has an invalid length. netlink: 'syz-executor.7': attribute type 16 has an invalid length. syz-executor.1 calls setitimer() with new_value NULL pointer. Misfeature support will be removed loop5: detected capacity change from 0 to 64 FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci3: unexpected event for opcode 0x0411 Bluetooth: hci3: ACL packet for unknown connection handle 201 Bluetooth: hci3: unexpected event for opcode 0x0411 Bluetooth: hci3: ACL packet for unknown connection handle 201 loop3: detected capacity change from 0 to 64 loop5: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci6: unexpected event for opcode 0x0411 Bluetooth: hci6: ACL packet for unknown connection handle 201 FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci3: unexpected event for opcode 0x0411 Bluetooth: hci3: ACL packet for unknown connection handle 201 loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci6: unexpected event for opcode 0x0411 Bluetooth: hci6: ACL packet for unknown connection handle 201 loop3: detected capacity change from 0 to 64 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Bluetooth: hci6: unexpected event for opcode 0x0411 ---------------- 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)