------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x323/0x3d0, CPU#0: syz-executor.2/5617 Modules linked in: CPU: 0 UID: 0 PID: 5617 Comm: syz-executor.2 Not tainted 6.18.0-rc4-next-20251106 #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+0x323/0x3d0 Code: 00 01 0f 98 c3 31 ff 89 de e8 c9 9d ab ff 84 db 75 07 5b 5d e9 ee a2 ab ff e8 e9 a2 ab ff 90 0f 0b 90 eb ee e8 de a2 ab ff 90 <0f> 0b 90 e9 3f fd ff ff e8 d0 a2 ab ff 90 0f 0b 90 e9 92 fd ff ff RSP: 0018:ffff88804016fe08 EFLAGS: 00010212 RAX: 0000000000000d92 RBX: ffff8880097c1680 RCX: ffffc90002f2c000 RDX: 0000000000040000 RSI: ffffffff81c92b42 RDI: 0000000000000001 RBP: ffff88800b655401 R08: 0000000000000001 R09: ffffed10016caa97 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801724da40 R13: 0000000000000000 R14: ffff88800c5c5340 R15: ffff88804016fe98 FS: 00007f8f638b8700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc2929ff541 CR3: 0000000016926000 CR4: 0000000000350ef0 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: 0033:0x7f8f66344107 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:00007f8f638b8128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f8f66455f60 RCX: 00007f8f66344107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe83a2ad5f R14: 00007f8f638b8300 R15: 0000000000022000 irq event stamp: 1179 hardirqs last enabled at (1189): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1196): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (980): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1215): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x331/0x3d0, CPU#0: syz-executor.2/5617 Modules linked in: CPU: 0 UID: 0 PID: 5617 Comm: syz-executor.2 Tainted: G W 6.18.0-rc4-next-20251106 #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+0x331/0x3d0 Code: 84 db 75 07 5b 5d e9 ee a2 ab ff e8 e9 a2 ab ff 90 0f 0b 90 eb ee e8 de a2 ab ff 90 0f 0b 90 e9 3f fd ff ff e8 d0 a2 ab ff 90 <0f> 0b 90 e9 92 fd ff ff e8 c2 a2 ab ff 90 0f 0b 90 e9 e5 fd ff ff RSP: 0018:ffff88804016fe08 EFLAGS: 00010212 RAX: 000000000001a958 RBX: ffff8880097c1680 RCX: ffffc90002f2c000 RDX: 0000000000040000 RSI: ffffffff81c92b50 RDI: 0000000000000001 RBP: ffff888019a6c201 R08: 0000000000000001 R09: ffffed100334d8a5 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801724da40 R13: 0000000000000000 R14: ffff88800c5c5340 R15: ffff88804016fe98 FS: 00007f8f638b8700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc2929ff541 CR3: 0000000016926000 CR4: 0000000000350ef0 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: 0033:0x7f8f66344107 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:00007f8f638b8128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f8f66455f60 RCX: 00007f8f66344107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe83a2ad5f R14: 00007f8f638b8300 R15: 0000000000022000 irq event stamp: 1579 hardirqs last enabled at (1589): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1596): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1294): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1281): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x33f/0x3d0, CPU#0: syz-executor.2/5617 Modules linked in: CPU: 0 UID: 0 PID: 5617 Comm: syz-executor.2 Tainted: G W 6.18.0-rc4-next-20251106 #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+0x33f/0x3d0 Code: ab ff 90 0f 0b 90 eb ee e8 de a2 ab ff 90 0f 0b 90 e9 3f fd ff ff e8 d0 a2 ab ff 90 0f 0b 90 e9 92 fd ff ff e8 c2 a2 ab ff 90 <0f> 0b 90 e9 e5 fd ff ff e8 b4 a2 ab ff 90 0f 0b 90 e9 38 fe ff ff RSP: 0018:ffff88804016fe08 EFLAGS: 00010212 RAX: 0000000000034c55 RBX: ffff8880097c1680 RCX: ffffc90002f2c000 RDX: 0000000000040000 RSI: ffffffff81c92b5e RDI: 0000000000000001 RBP: ffff88800f01c001 R08: 0000000000000001 R09: ffffed1001e03941 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801724da40 R13: 0000000000000000 R14: ffff88800c5c5340 R15: ffff88804016fe98 FS: 00007f8f638b8700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc2929ff541 CR3: 0000000016926000 CR4: 0000000000350ef0 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: 0033:0x7f8f66344107 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:00007f8f638b8128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f8f66455f60 RCX: 00007f8f66344107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe83a2ad5f R14: 00007f8f638b8300 R15: 0000000000022000 irq event stamp: 1969 hardirqs last enabled at (1977): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1986): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1294): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1281): [] __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.2/5617 Modules linked in: CPU: 0 UID: 0 PID: 5617 Comm: syz-executor.2 Tainted: G W 6.18.0-rc4-next-20251106 #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 c2 a2 ab ff 90 0f 0b 90 e9 e5 fd ff ff e8 b4 a2 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 a6 a2 ab ff 90 <0f> 0b 90 e9 8b fe ff ff e8 98 a2 ab ff 90 0f 0b 90 e9 de fe ff ff RSP: 0018:ffff88804016fe08 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff8880097c1680 RCX: ffffc90002f2c000 RDX: 0000000000040000 RSI: ffffffff81c92b7a RDI: 0000000000000001 RBP: ffff8880094c1a01 R08: 0000000000000001 R09: ffffed1001298357 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801724da40 R13: 0000000000000000 R14: ffff88800c5c5340 R15: ffff88804016fe98 FS: 00007f8f638b8700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc2929ff541 CR3: 0000000016926000 CR4: 0000000000350ef0 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: 0033:0x7f8f66344107 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:00007f8f638b8128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f8f66455f60 RCX: 00007f8f66344107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe83a2ad5f R14: 00007f8f638b8300 R15: 0000000000022000 irq event stamp: 2409 hardirqs last enabled at (2417): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (2424): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (2388): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2383): [] __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.2/5617 Modules linked in: CPU: 0 UID: 0 PID: 5617 Comm: syz-executor.2 Tainted: G W 6.18.0-rc4-next-20251106 #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 b4 a2 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 a6 a2 ab ff 90 0f 0b 90 e9 8b fe ff ff e8 98 a2 ab ff 90 <0f> 0b 90 e9 de fe ff ff e8 8a a2 ab ff 90 0f 0b 90 e9 31 ff ff ff RSP: 0018:ffff88804016fe08 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff8880097c1750 RCX: ffffc90002f2c000 RDX: 0000000000040000 RSI: ffffffff81c92b88 RDI: 0000000000000001 RBP: ffff88800c38e101 R08: 0000000000000001 R09: ffffed1001871c62 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888013c8ddc0 R13: 0000000000000000 R14: ffff88800c5c5340 R15: ffff88804016fe98 FS: 00007f8f638b8700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000eb40 CR3: 0000000016926000 CR4: 0000000000350ef0 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: 0033:0x7f8f66344107 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:00007f8f638b8128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f8f66344107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8f638b86bc R13: 000000000000000e R14: 00007f8f638b8300 R15: 0000000000022000 irq event stamp: 2999 hardirqs last enabled at (3007): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (3016): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (2732): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2715): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- random: crng reseeded on system resumption random: crng reseeded on system resumption loop5: detected capacity change from 0 to 512 EXT4-fs warning (device loop5): ext4_multi_mount_protect:288: Invalid MMP block in superblock loop5: detected capacity change from 0 to 512 EXT4-fs warning (device loop5): ext4_multi_mount_protect:288: Invalid MMP block in superblock loop5: detected capacity change from 0 to 512 EXT4-fs warning (device loop5): ext4_multi_mount_protect:288: Invalid MMP block in superblock loop5: detected capacity change from 0 to 512 EXT4-fs warning (device loop5): ext4_multi_mount_protect:288: Invalid MMP block in superblock loop5: detected capacity change from 0 to 512 EXT4-fs warning (device loop5): ext4_multi_mount_protect:288: Invalid MMP block in superblock lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode lo: entered promiscuous mode lo: left promiscuous mode loop5: detected capacity change from 0 to 4 EXT4-fs (loop5): couldn't mount as ext3 due to feature incompatibilities loop5: detected capacity change from 0 to 4 EXT4-fs (loop5): couldn't mount as ext3 due to feature incompatibilities loop5: detected capacity change from 0 to 4 EXT4-fs (loop5): couldn't mount as ext3 due to feature incompatibilities loop5: detected capacity change from 0 to 4 EXT4-fs (loop5): couldn't mount as ext3 due to feature incompatibilities loop5: detected capacity change from 0 to 4 EXT4-fs (loop5): couldn't mount as ext3 due to feature incompatibilities audit: type=1400 audit(1762416356.797:34): avc: denied { write } for pid=5976 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1