netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'.
------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at nsproxy_ns_active_get+0x35b/0x3d0, CPU#0: syz-executor.2/8852
Modules linked in:
CPU: 0 UID: 0 PID: 8852 Comm: syz-executor.2 Not tainted 6.18.0-rc4-next-20251105 #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+0x35b/0x3d0
Code: 0f 0b 90 e9 92 fd ff ff e8 e2 d2 ab ff 90 0f 0b 90 e9 e5 fd ff ff e8 d4 d2 ab ff 90 0f 0b 90 e9 38 fe ff ff e8 c6 d2 ab ff 90 <0f> 0b 90 e9 8b fe ff ff e8 b8 d2 ab ff 90 0f 0b 90 e9 de fe ff ff
RSP: 0018:ffff88801b797e08 EFLAGS: 00010216
RAX: 0000000000000d64 RBX: ffff888015c4b2d8 RCX: ffffc9000823a000
RDX: 0000000000040000 RSI: ffffffff81c8ca2a RDI: 0000000000000001
RBP: ffff888015ce4001 R08: 0000000000000001 R09: ffffed1002b9c817
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880158ad340
R13: 0000000000000000 R14: ffff88804c2c8000 R15: ffff88801b797e98
FS: 00007f0aa8b0e700(0000) GS:ffff8880e53a5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0aab6a8000 CR3: 000000004c225000 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: 0033:0x7f0aab59a107
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:00007f0aa8b0e128 EFLAGS: 00000246 ORIG_RAX: 0000000000000134
RAX: ffffffffffffffda RBX: 00007f0aab6abf60 RCX: 00007f0aab59a107
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000ef
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa7b22c6f R14: 00007f0aa8b0e300 R15: 0000000000022000
irq event stamp: 1619
hardirqs last enabled at (1635): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (1644): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (1632): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (1627): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'.
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 8853 Comm: syz-executor.4 Tainted: G W 6.18.0-rc4-next-20251105 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
_copy_from_user+0x30/0xd0
csum_and_copy_from_iter_full+0x1fb/0x1f30
ip_generic_getfrag+0x181/0x270
__ip_append_data+0x17ab/0x40d0
ip_make_skb+0x22b/0x2a0
udp_sendmsg+0x1647/0x22c0
inet_sendmsg+0x109/0x150
____sys_sendmsg+0x947/0xc20
___sys_sendmsg+0x10f/0x1b0
__sys_sendmmsg+0x1f5/0x420
__x64_sys_sendmmsg+0x9d/0x110
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f016dc33b19
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:00007f016b1a9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f016dd46f60 RCX: 00007f016dc33b19
RDX: 0000000000000001 RSI: 0000000020000640 RDI: 0000000000000004
RBP: 00007f016b1a91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd0abace8f R14: 00007f016b1a9300 R15: 0000000000022000
random: crng reseeded on system resumption
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
random: crng reseeded on system resumption
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 8879 Comm: syz-executor.4 Tainted: G W 6.18.0-rc4-next-20251105 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
should_failslab+0xc2/0x120
kmem_cache_alloc_node_noprof+0x87/0x6b0
__alloc_skb+0x2ab/0x370
__ip_append_data+0x319b/0x40d0
ip_make_skb+0x22b/0x2a0
udp_sendmsg+0x1647/0x22c0
inet_sendmsg+0x109/0x150
____sys_sendmsg+0x947/0xc20
___sys_sendmsg+0x10f/0x1b0
__sys_sendmmsg+0x1f5/0x420
__x64_sys_sendmmsg+0x9d/0x110
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f016dc33b19
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:00007f016b1a9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f016dd46f60 RCX: 00007f016dc33b19
RDX: 0000000000000001 RSI: 0000000020000640 RDI: 0000000000000004
RBP: 00007f016b1a91d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd0abace8f R14: 00007f016b1a9300 R15: 0000000000022000