EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000. ------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x369/0x3d0, CPU#1: syz-executor.7/6272 Modules linked in: CPU: 1 UID: 0 PID: 6272 Comm: syz-executor.7 Not tainted 6.18.0-rc4-next-20251107 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:nsproxy_ns_active_get+0x369/0x3d0 Code: 0f 0b 90 e9 e5 fd ff ff e8 14 24 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 06 24 ab ff 90 0f 0b 90 e9 8b fe ff ff e8 f8 23 ab ff 90 <0f> 0b 90 e9 de fe ff ff e8 ea 23 ab ff 90 0f 0b 90 e9 31 ff ff ff RSP: 0018:ffff8880203b7a48 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88800e3f8c30 RCX: ffffc90009433000 RDX: 0000000000040000 RSI: ffffffff81c9ab38 RDI: 0000000000000001 RBP: ffff888016833001 R08: 0000000000000001 R09: ffffed1002d06652 R10: 0000000000000001 R11: 1ffff1100d9e6c39 R12: ffff88800e3f8c30 R13: 0000000000000000 R14: ffff8880140e2438 R15: ffffffff85cf9e60 FS: 00007f936b81c700(0000) GS:ffff8880e5498000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f936b7da9d0 CR3: 000000001b5ab000 CR4: 0000000000350ef0 Call Trace: copy_namespaces+0x4a3/0x580 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: 0033:0x7f936e2a6b19 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:00007f936b81c188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f936e3b9f60 RCX: 00007f936e2a6b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007f936e300f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffce2626ef R14: 00007f936b81c300 R15: 0000000000022000 irq event stamp: 5191 hardirqs last enabled at (5199): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (5208): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (5044): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (5037): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- loop5: detected capacity change from 0 to 4 loop7: detected capacity change from 0 to 240 EXT4-fs (loop5): fragment/cluster size (16384) != block size (1024) netlink: 'syz-executor.1': attribute type 16 has an invalid length. loop5: detected capacity change from 0 to 4 Bluetooth: hci3: ACL packet for unknown connection handle 200 Bluetooth: hci3: ACL packet for unknown connection handle 200 EXT4-fs (loop5): fragment/cluster size (16384) != block size (1024) netlink: 112 bytes leftover after parsing attributes in process `syz-executor.6'.