------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x33f/0x3d0, CPU#0: syz-executor.1/156243 Modules linked in: CPU: 0 UID: 0 PID: 156243 Comm: syz-executor.1 Not tainted 6.18.0-rc4-next-20251110 #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+0x33f/0x3d0 Code: ab ff 90 0f 0b 90 eb ee e8 ae 52 ab ff 90 0f 0b 90 e9 3f fd ff ff e8 a0 52 ab ff 90 0f 0b 90 e9 92 fd ff ff e8 92 52 ab ff 90 <0f> 0b 90 e9 e5 fd ff ff e8 84 52 ab ff 90 0f 0b 90 e9 38 fe ff ff RSP: 0018:ffff888018c8fe08 EFLAGS: 00010212 RAX: 0000000000000da3 RBX: ffff88803e5e2068 RCX: ffffc90002009000 RDX: 0000000000040000 RSI: ffffffff81c9575e RDI: 0000000000000001 RBP: ffff88804927c001 R08: 0000000000000001 R09: ffffed100924f941 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888017488c40 R13: 0000000000000000 R14: ffff88804a338000 R15: ffff888018c8fe98 FS: 00007f10fd668700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000c0 CR3: 000000001c9a5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: switch_task_namespaces+0x3d/0x110 __do_sys_setns+0x6b0/0x19a0 do_syscall_64+0xbf/0x430 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f11000f4107 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 34 01 00 00 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:00007f10fd668128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f1100205f60 RCX: 00007f11000f4107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8187acaf R14: 00007f10fd668300 R15: 0000000000022000 irq event stamp: 669 hardirqs last enabled at (679): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (688): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (480): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (451): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x35b/0x3d0, CPU#0: syz-executor.1/156243 Modules linked in: CPU: 0 UID: 0 PID: 156243 Comm: syz-executor.1 Tainted: G W 6.18.0-rc4-next-20251110 #1 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:nsproxy_ns_active_get+0x35b/0x3d0 Code: 0f 0b 90 e9 92 fd ff ff e8 92 52 ab ff 90 0f 0b 90 e9 e5 fd ff ff e8 84 52 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 76 52 ab ff 90 <0f> 0b 90 e9 8b fe ff ff e8 68 52 ab ff 90 0f 0b 90 e9 de fe ff ff RSP: 0018:ffff888018c8fe08 EFLAGS: 00010216 RAX: 000000000001c494 RBX: ffff88803e5e2068 RCX: ffffc90002009000 RDX: 0000000000040000 RSI: ffffffff81c9577a RDI: 0000000000000001 RBP: ffff88801fb12001 R08: 0000000000000001 R09: ffffed1003f62417 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888017488c40 R13: 0000000000000000 R14: ffff88804a338000 R15: ffff888018c8fe98 FS: 00007f10fd668700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000c0 CR3: 000000001c9a5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: switch_task_namespaces+0x3d/0x110 __do_sys_setns+0x6b0/0x19a0 do_syscall_64+0xbf/0x430 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f11000f4107 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 34 01 00 00 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:00007f10fd668128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f1100205f60 RCX: 00007f11000f4107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8187acaf R14: 00007f10fd668300 R15: 0000000000022000 irq event stamp: 1231 hardirqs last enabled at (1241): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1250): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1294): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1259): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x369/0x3d0, CPU#0: syz-executor.1/156243 Modules linked in: CPU: 0 UID: 0 PID: 156243 Comm: syz-executor.1 Tainted: G W 6.18.0-rc4-next-20251110 #1 PREEMPT(voluntary) Tainted: [W]=WARN 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 84 52 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 76 52 ab ff 90 0f 0b 90 e9 8b fe ff ff e8 68 52 ab ff 90 <0f> 0b 90 e9 de fe ff ff e8 5a 52 ab ff 90 0f 0b 90 e9 31 ff ff ff RSP: 0018:ffff888018c8fe08 EFLAGS: 00010212 RAX: 000000000003f42b RBX: ffff88803e5e2820 RCX: ffffc90002009000 RDX: 0000000000040000 RSI: ffffffff81c95788 RDI: 0000000000000001 RBP: ffff888052d24801 R08: 0000000000000001 R09: ffffed100a5a495a R10: 0000000000000001 R11: 0000000000000001 R12: ffff888017eb5c00 R13: 0000000000000000 R14: ffff88804a338000 R15: ffff888018c8fe98 FS: 00007f10fd668700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002040 CR3: 000000001c9a5000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: switch_task_namespaces+0x3d/0x110 __do_sys_setns+0x6b0/0x19a0 do_syscall_64+0xbf/0x430 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f11000f4107 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 34 01 00 00 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:00007f10fd668128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f11000f4107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f10fd6686bc R13: 000000000000000e R14: 00007f10fd668300 R15: 0000000000022000 irq event stamp: 1797 hardirqs last enabled at (1813): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1822): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1838): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1833): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- Bluetooth: hci0: Opcode 0x080f failed: -4 EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed netlink: 'syz-executor.3': attribute type 19 has an invalid length. netlink: 'syz-executor.3': attribute type 19 has an invalid length. 9p: Bad value for 'rfdno' 9p: Bad value for 'rfdno' Bluetooth: hci0: Opcode 0x0401 failed: -4 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 No source specified No source specified sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 40 00 critical target error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 buffer_io_error: 770 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 Buffer I/O error on dev sr0, logical block 3, lost async page write Buffer I/O error on dev sr0, logical block 4, lost async page write Buffer I/O error on dev sr0, logical block 5, lost async page write Buffer I/O error on dev sr0, logical block 6, lost async page write Buffer I/O error on dev sr0, logical block 7, lost async page write Buffer I/O error on dev sr0, logical block 8, lost async page write Buffer I/O error on dev sr0, logical block 9, lost async page write sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 40 00 00 40 00 critical target error, dev sr0, sector 256 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 80 00 00 40 00 critical target error, dev sr0, sector 512 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 c0 00 00 40 00 critical target error, dev sr0, sector 768 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 00 00 00 40 00 critical target error, dev sr0, sector 1024 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 40 00 00 40 00 critical target error, dev sr0, sector 1280 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 80 00 00 40 00 critical target error, dev sr0, sector 1536 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 01 c0 00 00 40 00 critical target error, dev sr0, sector 1792 op 0x1:(WRITE) flags 0x4000 phys_seg 32 prio class 2 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 02 00 00 00 08 00 critical target error, dev sr0, sector 2048 op 0x1:(WRITE) flags 0x0 phys_seg 4 prio class 2