------------[ cut here ]------------ sysctl net/ipv4/ipfrag_low_thresh: data points to kernel global data: ipfrag_low_thresh_unused WARNING: CPU: 0 PID: 5003 at net/sysctl_net.c:155 ensure_safe_net_sysctl net/sysctl_net.c:155 [inline] WARNING: CPU: 0 PID: 5003 at net/sysctl_net.c:155 register_net_sysctl+0x207/0x3c0 net/sysctl_net.c:167 Modules linked in: CPU: 0 PID: 5003 Comm: syz-executor.0 Not tainted 6.4.0-rc1-syzkaller-00234-g8b33485128ad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:ensure_safe_net_sysctl net/sysctl_net.c:155 [inline] RIP: 0010:register_net_sysctl+0x207/0x3c0 net/sysctl_net.c:167 Code: 8b 43 f4 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 a9 01 00 00 48 8b 53 ec 4c 89 e9 4c 89 fe 48 c7 c7 c0 01 85 8b e8 59 61 81 f7 <0f> 0b 48 89 d8 48 c1 e8 03 0f b6 14 28 48 89 d8 83 e0 07 83 c0 01 RSP: 0018:ffffc9000445fbf8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888018f06c54 RCX: 0000000000000000 RDX: ffff888028a08000 RSI: ffffffff814c03e7 RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888018f06c48 R13: ffffffff8b850040 R14: 0000000000000000 R15: ffffffff8b694ce0 FS: 00005555570df400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d2e15ccff0 CR3: 00000000711d7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip4_frags_ns_ctl_register net/ipv4/ip_fragment.c:618 [inline] ipv4_frags_init_net net/ipv4/ip_fragment.c:689 [inline] ipv4_frags_init_net+0x269/0x430 net/ipv4/ip_fragment.c:660 ops_init+0xb9/0x6b0 net/core/net_namespace.c:136 setup_net+0x5d1/0xc50 net/core/net_namespace.c:339 copy_net_ns+0x4ee/0x8e0 net/core/net_namespace.c:491 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x449/0x920 kernel/fork.c:3444 __do_sys_unshare kernel/fork.c:3515 [inline] __se_sys_unshare kernel/fork.c:3513 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:3513 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff95fe8d727 Code: 73 01 c3 48 c7 c1 b8 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 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc26e11768 EFLAGS: 00000202 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007ffc26e11da8 RCX: 00007ff95fe8d727 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003 R13: 00007ffc26e11840 R14: 00007ff95ffac9d8 R15: 000000000000000c