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AFNElJ9A8IY58+Klu1OjQYe2ebrsJ7dwy1nu32Ds8vAjXyH6kn1/z80JiOkakMOQ82UokpDCE4Lw2f8K3waRZPKGxzM=@vger.kernel.org X-Gm-Message-State: AOJu0YzariUpjQYSuqgDh9wvq8DoDbsGfF75sovD4ouJtJsNPPL2sOMJ w8NNzP5yCD8emP9RxFdob0KA7fQcOEOYhi/8o+Nzx6HOPGruSkwVP6GUDCLvPks8flmdxl6An7R 74E7xEwIfdJAjvenLof7j7mxr5RhQBApZG/VRuMIgoOhqrV6bVyp2lUIfr4M= Precedence: bulk X-Mailing-List: netfilter-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1613:b0:69e:b425:744d with SMTP id 006d021491bc7-69eb4257929mr2028092eaf.6.1781037893299; Tue, 09 Jun 2026 13:44:53 -0700 (PDT) Date: Tue, 09 Jun 2026 13:44:53 -0700 In-Reply-To: <20260609072750.318774-1-kadlec@netfilter.org> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a287b45.39669fcc.33b062.00a2.GAE@google.com> Subject: [syzbot ci] Re: netfilter: ipset fixes, second batch From: syzbot ci To: kadlec@netfilter.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot ci has tested the following series [v2] netfilter: ipset fixes, second batch https://lore.kernel.org/all/20260609072750.318774-1-kadlec@netfilter.org * [PATCH v2 1/9] netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types * [PATCH v2 2/9] netfilter: ipset: Don't use test_bit() in lockless RCU readers in bitmap types * [PATCH v2 3/9] netfilter: ipset: fix order of kfree_rcu() and rcu_assign_pointer() * [PATCH v2 4/9] netfilter: ipset: Extend the rcu locked area properly * [PATCH v2 5/9] netfilter: ipset: exlude gc when resize is in progress * [PATCH v2 6/9] netfilter: ipset: fix potential double free at resize/del * [PATCH v2 7/9] netfilter: ipset: make sure gc is properly stopped * [PATCH v2 8/9] netfilter: ipset: fix potential torn read in reuse/forceadd cases * [PATCH v2 9/9] netfilter: ipset: rework cidr bookkeeping and found the following issues: * BUG: sleeping function called from invalid context in hash_ip4_resize * BUG: sleeping function called from invalid context in hash_ipmark4_resize * BUG: sleeping function called from invalid context in hash_ipport4_resize * BUG: sleeping function called from invalid context in hash_ipportnet6_resize * BUG: sleeping function called from invalid context in hash_net4_resize Full report is available here: https://ci.syzbot.org/series/60ee40c9-c67a-4d2e-8c5c-7cbc4f2c35e3 *** BUG: sleeping function called from invalid context in hash_ip4_resize tree: nf-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git base: bfa3d89cc15c09f7d1581c834a5ed725189ec19f arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/63302f1b-7561-4e38-b3bc-890b9b65c7c1/config syz repro: https://ci.syzbot.org/findings/3f7d3e03-c73e-47d2-a969-7c113b094a23/syz_repro BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5837, name: syz.0.17 preempt_count: 201, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz.0.17/5837: #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnl_lock net/netfilter/nfnetlink.c:96 [inline] #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa71/0x12c0 net/netfilter/nfnetlink.c:293 #1: ffff8881bbd48028 (&t->gc_lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:348 [inline] #1: ffff8881bbd48028 (&t->gc_lock){+...}-{3:3}, at: hash_ip4_resize+0x149/0x1a80 net/netfilter/ipset/ip_set_hash_gen.h:667 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 UID: 0 PID: 5837 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x378/0x4d0 kernel/sched/core.c:9163 might_alloc include/linux/sched/mm.h:323 [inline] slab_pre_alloc_hook mm/slub.c:4521 [inline] slab_alloc_node mm/slub.c:4876 [inline] __do_kmalloc_node mm/slub.c:5295 [inline] __kvmalloc_node_noprof+0x164/0x8a0 mm/slub.c:6833 hash_ip4_resize+0x278/0x1a80 net/netfilter/ipset/ip_set_hash_gen.h:682 call_ad+0x562/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb3ded9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb3dfcee028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb3df015fa0 RCX: 00007fb3ded9ce59 RDX: 00000000240008c4 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007fb3dee32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb3df016038 R14: 00007fb3df015fa0 R15: 00007ffd0454d2c8 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 UID: 0 PID: 5837 Comm: syz.0.17 Tainted: G W syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182 spin_lock_bh include/linux/spinlock.h:348 [inline] hash_ip4_resize+0x149/0x1a80 net/netfilter/ipset/ip_set_hash_gen.h:667 call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb3ded9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb3dfcee028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb3df015fa0 RCX: 00007fb3ded9ce59 RDX: 00000000240008c4 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007fb3dee32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb3df016038 R14: 00007fb3df015fa0 R15: 00007ffd0454d2c8 Set syz1 is full, maxelem 65536 reached *** BUG: sleeping function called from invalid context in hash_ipmark4_resize tree: nf-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git base: bfa3d89cc15c09f7d1581c834a5ed725189ec19f arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/63302f1b-7561-4e38-b3bc-890b9b65c7c1/config syz repro: https://ci.syzbot.org/findings/57335612-22e3-4e78-a4ec-3d06321de960/syz_repro BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5839, name: syz.1.18 preempt_count: 201, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz.1.18/5839: #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnl_lock net/netfilter/nfnetlink.c:96 [inline] #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa71/0x12c0 net/netfilter/nfnetlink.c:293 #1: ffff888168150028 (&t->gc_lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:348 [inline] #1: ffff888168150028 (&t->gc_lock){+...}-{3:3}, at: hash_ipmark4_resize+0x13f/0x1ae0 net/netfilter/ipset/ip_set_hash_gen.h:667 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 UID: 0 PID: 5839 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x378/0x4d0 kernel/sched/core.c:9163 might_alloc include/linux/sched/mm.h:323 [inline] slab_pre_alloc_hook mm/slub.c:4521 [inline] slab_alloc_node mm/slub.c:4876 [inline] __do_kmalloc_node mm/slub.c:5295 [inline] __kvmalloc_node_noprof+0x164/0x8a0 mm/slub.c:6833 hash_ipmark4_resize+0x26f/0x1ae0 net/netfilter/ipset/ip_set_hash_gen.h:682 call_ad+0x562/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f37dad9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f37dbd30028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f37db015fa0 RCX: 00007f37dad9ce59 RDX: 00000000040c0080 RSI: 00002000000002c0 RDI: 0000000000000004 RBP: 00007f37dae32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f37db016038 R14: 00007f37db015fa0 R15: 00007fff6c4f3458 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 1 UID: 0 PID: 5839 Comm: syz.1.18 Tainted: G W syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182 spin_lock_bh include/linux/spinlock.h:348 [inline] hash_ipmark4_resize+0x13f/0x1ae0 net/netfilter/ipset/ip_set_hash_gen.h:667 call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f37dad9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f37dbd30028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f37db015fa0 RCX: 00007f37dad9ce59 RDX: 00000000040c0080 RSI: 00002000000002c0 RDI: 0000000000000004 RBP: 00007f37dae32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f37db016038 R14: 00007f37db015fa0 R15: 00007fff6c4f3458 Set syz1 is full, maxelem 65536 reached *** BUG: sleeping function called from invalid context in hash_ipport4_resize tree: nf-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git base: bfa3d89cc15c09f7d1581c834a5ed725189ec19f arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/63302f1b-7561-4e38-b3bc-890b9b65c7c1/config syz repro: https://ci.syzbot.org/findings/79e04816-4100-48fa-8d49-43c546bef2fa/syz_repro BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5819, name: syz.2.19 preempt_count: 201, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz.2.19/5819: #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnl_lock net/netfilter/nfnetlink.c:96 [inline] #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa71/0x12c0 net/netfilter/nfnetlink.c:293 #1: ffff888116501828 (&t->gc_lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:348 [inline] #1: ffff888116501828 (&t->gc_lock){+...}-{3:3}, at: hash_ipport4_resize+0x13f/0x1ae0 net/netfilter/ipset/ip_set_hash_gen.h:667 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 UID: 0 PID: 5819 Comm: syz.2.19 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x378/0x4d0 kernel/sched/core.c:9163 might_alloc include/linux/sched/mm.h:323 [inline] slab_pre_alloc_hook mm/slub.c:4521 [inline] slab_alloc_node mm/slub.c:4876 [inline] __do_kmalloc_node mm/slub.c:5295 [inline] __kvmalloc_node_noprof+0x164/0x8a0 mm/slub.c:6833 hash_ipport4_resize+0x219/0x1ae0 net/netfilter/ipset/ip_set_hash_gen.h:677 call_ad+0x562/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe5c739ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe5c8339028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe5c7615fa0 RCX: 00007fe5c739ce59 RDX: 0000000000000090 RSI: 00002000000002c0 RDI: 0000000000000004 RBP: 00007fe5c7432d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe5c7616038 R14: 00007fe5c7615fa0 R15: 00007ffd329f2868 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 1 UID: 0 PID: 5819 Comm: syz.2.19 Tainted: G W syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182 spin_lock_bh include/linux/spinlock.h:348 [inline] hash_ipport4_resize+0x13f/0x1ae0 net/netfilter/ipset/ip_set_hash_gen.h:667 call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe5c739ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe5c8339028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe5c7615fa0 RCX: 00007fe5c739ce59 RDX: 0000000000000090 RSI: 00002000000002c0 RDI: 0000000000000004 RBP: 00007fe5c7432d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe5c7616038 R14: 00007fe5c7615fa0 R15: 00007ffd329f2868 *** BUG: sleeping function called from invalid context in hash_ipportnet6_resize tree: nf-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git base: bfa3d89cc15c09f7d1581c834a5ed725189ec19f arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/63302f1b-7561-4e38-b3bc-890b9b65c7c1/config syz repro: https://ci.syzbot.org/findings/8502cd2b-1718-4dd7-8c57-c8f6d494a2b7/syz_repro BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5835, name: syz.1.18 preempt_count: 201, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz.1.18/5835: #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnl_lock net/netfilter/nfnetlink.c:96 [inline] #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa71/0x12c0 net/netfilter/nfnetlink.c:293 #1: ffff8881114d0028 (&t->gc_lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:348 [inline] #1: ffff8881114d0028 (&t->gc_lock){+...}-{3:3}, at: hash_ipportnet6_resize+0x170/0x1eb0 net/netfilter/ipset/ip_set_hash_gen.h:667 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 UID: 0 PID: 5835 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x378/0x4d0 kernel/sched/core.c:9163 might_alloc include/linux/sched/mm.h:323 [inline] slab_pre_alloc_hook mm/slub.c:4521 [inline] slab_alloc_node mm/slub.c:4876 [inline] __do_kmalloc_node mm/slub.c:5295 [inline] __kvmalloc_node_noprof+0x164/0x8a0 mm/slub.c:6833 hash_ipportnet6_resize+0x31d/0x1eb0 net/netfilter/ipset/ip_set_hash_gen.h:682 call_ad+0x562/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f27c6b9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f27c7a44028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f27c6e15fa0 RCX: 00007f27c6b9ce59 RDX: 0000000000000000 RSI: 00002000000002c0 RDI: 0000000000000004 RBP: 00007f27c6c32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f27c6e16038 R14: 00007f27c6e15fa0 R15: 00007ffcb0b8a718 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 UID: 0 PID: 5835 Comm: syz.1.18 Tainted: G W syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182 spin_lock_bh include/linux/spinlock.h:348 [inline] hash_ipportnet6_resize+0x170/0x1eb0 net/netfilter/ipset/ip_set_hash_gen.h:667 call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f27c6b9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f27c7a44028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f27c6e15fa0 RCX: 00007f27c6b9ce59 RDX: 0000000000000000 RSI: 00002000000002c0 RDI: 0000000000000004 RBP: 00007f27c6c32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f27c6e16038 R14: 00007f27c6e15fa0 R15: 00007ffcb0b8a718 *** BUG: sleeping function called from invalid context in hash_net4_resize tree: nf-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git base: bfa3d89cc15c09f7d1581c834a5ed725189ec19f arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/63302f1b-7561-4e38-b3bc-890b9b65c7c1/config syz repro: https://ci.syzbot.org/findings/230cf2b1-2c8b-4558-b095-874702f9bc7d/syz_repro BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5814, name: syz.1.18 preempt_count: 201, expected: 0 RCU nest depth: 0, expected: 0 2 locks held by syz.1.18/5814: #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnl_lock net/netfilter/nfnetlink.c:96 [inline] #0: ffffffff9a952da0 (nfnl_subsys_ipset){+.+.}-{4:4}, at: nfnetlink_rcv_msg+0xa71/0x12c0 net/netfilter/nfnetlink.c:293 #1: ffff88816a8df028 (&t->gc_lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:348 [inline] #1: ffff88816a8df028 (&t->gc_lock){+...}-{3:3}, at: hash_net4_resize+0x168/0x1bb0 net/netfilter/ipset/ip_set_hash_gen.h:667 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 UID: 0 PID: 5814 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x378/0x4d0 kernel/sched/core.c:9163 might_alloc include/linux/sched/mm.h:323 [inline] slab_pre_alloc_hook mm/slub.c:4521 [inline] slab_alloc_node mm/slub.c:4876 [inline] __do_kmalloc_node mm/slub.c:5295 [inline] __kvmalloc_node_noprof+0x164/0x8a0 mm/slub.c:6833 hash_net4_resize+0x26e/0x1bb0 net/netfilter/ipset/ip_set_hash_gen.h:677 call_ad+0x562/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe472d9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe473bc7028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe473015fa0 RCX: 00007fe472d9ce59 RDX: 0000000004000050 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007fe472e32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe473016038 R14: 00007fe473015fa0 R15: 00007ffcba742758 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 1 UID: 0 PID: 5814 Comm: syz.1.18 Tainted: G W syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:984 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1299 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:182 spin_lock_bh include/linux/spinlock.h:348 [inline] hash_net4_resize+0x168/0x1bb0 net/netfilter/ipset/ip_set_hash_gen.h:667 call_ad+0x463/0xb60 net/netfilter/ipset/ip_set_core.c:1758 ip_set_ad+0x824/0x9d0 net/netfilter/ipset/ip_set_core.c:1842 nfnetlink_rcv_msg+0xc03/0x12c0 net/netfilter/nfnetlink.c:300 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2556 nfnetlink_rcv+0x2c0/0x27b0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe472d9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe473bc7028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe473015fa0 RCX: 00007fe472d9ce59 RDX: 0000000004000050 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007fe472e32d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe473016038 R14: 00007fe473015fa0 R15: 00007ffcba742758 Set syz1 is full, maxelem 65536 reached *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. To test a patch for this bug, please reply with `#syz test` (should be on a separate line). The patch should be attached to the email. Note: arguments like custom git repos and branches are not supported.