------------[ cut here ]------------ WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x33f/0x3d0, CPU#0: syz-executor.0/68068 Modules linked in: CPU: 0 UID: 0 PID: 68068 Comm: syz-executor.0 Not tainted 6.18.0-rc5-next-20251111 #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 3e 55 ab ff 90 0f 0b 90 e9 3f fd ff ff e8 30 55 ab ff 90 0f 0b 90 e9 92 fd ff ff e8 22 55 ab ff 90 <0f> 0b 90 e9 e5 fd ff ff e8 14 55 ab ff 90 0f 0b 90 e9 38 fe ff ff RSP: 0018:ffff88804b1afe08 EFLAGS: 00010216 RAX: 0000000000000d2c RBX: ffff88804c2c4680 RCX: ffffc9000553f000 RDX: 0000000000040000 RSI: ffffffff81c9553e RDI: 0000000000000001 RBP: ffff888016fa0001 R08: 0000000000000001 R09: ffffed1002df4141 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801920a380 R13: 0000000000000000 R14: ffff88804e7c8000 R15: ffff88804b1afe98 FS: 00007f7a64dc5700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7a67963018 CR3: 000000002348d000 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: 0033:0x7f7a67851107 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:00007f7a64dc5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f7a67962f60 RCX: 00007f7a67851107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb38da3ff R14: 00007f7a64dc5300 R15: 0000000000022000 irq event stamp: 895 hardirqs last enabled at (903): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (912): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (836): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (829): [] __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.0/68068 Modules linked in: CPU: 0 UID: 0 PID: 68068 Comm: syz-executor.0 Tainted: G W 6.18.0-rc5-next-20251111 #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 22 55 ab ff 90 0f 0b 90 e9 e5 fd ff ff e8 14 55 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 06 55 ab ff 90 <0f> 0b 90 e9 8b fe ff ff e8 f8 54 ab ff 90 0f 0b 90 e9 de fe ff ff RSP: 0018:ffff88804b1afe08 EFLAGS: 00010212 RAX: 000000000001c908 RBX: ffff88804c2c4680 RCX: ffffc9000553f000 RDX: 0000000000040000 RSI: ffffffff81c9555a RDI: 0000000000000001 RBP: ffff888009843a01 R08: 0000000000000001 R09: ffffed1001308757 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801920a380 R13: 0000000000000000 R14: ffff88804e7c8000 R15: ffff88804b1afe98 FS: 00007f7a64dc5700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7a67963018 CR3: 000000002348d000 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 9pnet_virtio: no channels available for device ./file0 do_syscall_64+0xbf/0x430 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7a67851107 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:00007f7a64dc5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 00007f7a67962f60 RCX: 00007f7a67851107 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb38da3ff R14: 00007f7a64dc5300 R15: 0000000000022000 irq event stamp: 1333 hardirqs last enabled at (1343): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1352): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1186): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1179): [] __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.0/68068 Modules linked in: CPU: 0 UID: 0 PID: 68068 Comm: syz-executor.0 Tainted: G W 6.18.0-rc5-next-20251111 #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 14 55 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 06 55 ab ff 90 0f 0b 90 e9 8b fe ff ff e8 f8 54 ab ff 90 <0f> 0b 90 e9 de fe ff ff e8 ea 54 ab ff 90 0f 0b 90 e9 31 ff ff ff RSP: 0018:ffff88804b1afe08 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88804c2c4410 RCX: ffffc9000553f000 RDX: 0000000000040000 RSI: ffffffff81c95568 RDI: 0000000000000001 RBP: ffff8880172ce101 R08: 0000000000000001 R09: ffffed1002e59c62 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801920fa40 R13: 0000000000000000 R14: ffff88804e7c8000 R15: ffff88804b1afe98 FS: 00007f7a64dc5700(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9310b59718 CR3: 000000002348d000 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: 0033:0x7f7a67851107 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:00007f7a64dc5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f7a67851107 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7a64dc56bc R13: 000000000000000e R14: 00007f7a64dc5300 R15: 0000000000022000 irq event stamp: 1833 hardirqs last enabled at (1843): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1850): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1606): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1601): [] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'. EXT4-fs (sda): Online defrag not supported for non-extent files EXT4-fs (sda): Online defrag not supported for non-extent files EXT4-fs (sda): Online defrag not supported for non-extent files EXT4-fs (sda): Online defrag not supported for non-extent files loop4: detected capacity change from 0 to 4 loop4: detected capacity change from 0 to 4 loop4: detected capacity change from 0 to 4 loop4: detected capacity change from 0 to 4 loop1: detected capacity change from 0 to 128 loop5: detected capacity change from 0 to 512 EXT4-fs (loop5): corrupt root inode, run e2fsck EXT4-fs (loop5): mount failed loop5: detected capacity change from 0 to 512 loop5: detected capacity change from 0 to 512 EXT4-fs (loop5): corrupt root inode, run e2fsck EXT4-fs (loop5): mount failed Process accounting resumed Process accounting resumed loop5: detected capacity change from 0 to 512 EXT4-fs (loop5): corrupt root inode, run e2fsck EXT4-fs (loop5): mount failed audit: type=1400 audit(1762883331.982:60): avc: denied { watch_reads } for pid=74245 comm="syz-executor.4" path="/syzkaller-testdir466471136/syzkaller.oZq8fj/748/file0" dev="tmpfs" ino=1 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=dir permissive=1 sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s Process accounting resumed sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 25 prio class 2 Process accounting resumed