------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.4/283
Modules linked in:
CPU: 0 UID: 0 PID: 283 Comm: syz-executor.4 Tainted: G        W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 16 42 81 04 01 e8 31 f8 91 ff e9 41 fc ff ff e8 b7 50 b4 ff 31 ff 44 89 ee e8 dd 4b b4 ff 45 85 ed 79 09 e8 a3 50 b4 ff 90 <0f> 0b 90 e8 9a 50 b4 ff e8 75 f6 fb 02 31 ff 89 c5 89 c6 e8 ba 4b
RSP: 0018:ffff88801776fc00 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002eedf85 RCX: ffffffff81bf96d3
RDX: ffff888013fa5280 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88801e718000 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88801776fc68
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88801e718000
FS:  000055556a5ee400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec248eea8 CR3: 0000000041ff1000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 namespace_unlock+0x7f1/0x810
 path_umount+0x6a4/0x1100
 __x64_sys_umount+0x15c/0x190
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40572faf87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 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:00007ffec248f5e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000012 RCX: 00007f40572faf87
RDX: 00007ffec248f6b9 RSI: 000000000000000a RDI: 00007ffec248f6b0
RBP: 00007ffec248f6b0 R08: 00000000ffffffff R09: 00007ffec248f480
R10: 000055556a5efc7b R11: 0000000000000246 R12: 00007f4057353105
R13: 00007ffec2490770 R14: 000055556a5efc20 R15: 00007ffec24907b0
 </TASK>
irq event stamp: 187159
hardirqs last  enabled at (187169): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (187176): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (187062): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (187051): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop0: detected capacity change from 0 to 264192
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'.
loop0: detected capacity change from 0 to 264192
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.5/286
Modules linked in:
CPU: 0 UID: 0 PID: 286 Comm: syz-executor.5 Tainted: G        W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 16 42 81 04 01 e8 31 f8 91 ff e9 41 fc ff ff e8 b7 50 b4 ff 31 ff 44 89 ee e8 dd 4b b4 ff 45 85 ed 79 09 e8 a3 50 b4 ff 90 <0f> 0b 90 e8 9a 50 b4 ff e8 75 f6 fb 02 31 ff 89 c5 89 c6 e8 ba 4b
RSP: 0018:ffff88801638fce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002c71fa1 RCX: ffffffff81bf96d3
RDX: ffff888016f51b80 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88801e7181c0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88801638fd48
R13: 00000000ffffffff R14: ffff88801e7181c0 R15: ffff88801e7182a8
FS:  000055555f450400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555f459c58 CR3: 0000000043ed1000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 path_umount+0x6e0/0x1100
 __x64_sys_umount+0x15c/0x190
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f52fa761f87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 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:00007ffd9f3a9b58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 000000000000000e RCX: 00007f52fa761f87
RDX: 00007ffd9f3a9c29 RSI: 000000000000000a RDI: 00007ffd9f3a9c20
RBP: 00007ffd9f3a9c20 R08: 00000000ffffffff R09: 00007ffd9f3a99f0
R10: 000055555f451c7b R11: 0000000000000246 R12: 00007f52fa7ba105
R13: 00007ffd9f3aace0 R14: 000055555f451c20 R15: 00007ffd9f3aad20
 </TASK>
irq event stamp: 159067
hardirqs last  enabled at (159075): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (159084): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (158818): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (158783): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---