general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 23 Comm: ksoftirqd/1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:____bpf_get_local_storage kernel/bpf/cgroup.c:1573 [inline] RIP: 0010:bpf_get_local_storage+0x11b/0x180 kernel/bpf/cgroup.c:1557 Code: 59 6d 86 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 36 25 22 00 49 03 1e eb 22 e8 1c 8a dc ff 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 16 25 22 00 49 8b 1e 48 83 c3 10 RSP: 0018:ffffc900001872f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000013 RCX: ffff888100330000 RDX: 0000000000000100 RSI: 0000000000000013 RDI: 0000000000000015 RBP: ffffc90000187318 R08: ffffc90000187493 R09: ffffc90000187480 R10: dffffc0000000000 R11: fffff52000030e93 R12: dffffc0000000000 R13: ffffc9000398d002 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1734a80000 CR3: 0000000122d20000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_prog_3647604f6c8667e9+0x25/0x38 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline] __bpf_prog_run include/linux/filter.h:607 [inline] bpf_prog_run include/linux/filter.h:614 [inline] __bpf_prog_run_save_cb include/linux/filter.h:757 [inline] bpf_prog_run_array_cg kernel/bpf/cgroup.c:68 [inline] __cgroup_bpf_run_filter_skb+0x947/0xfb0 kernel/bpf/cgroup.c:1427 sk_filter_trim_cap+0x592/0x6d0 net/core/filter.c:141 tcp_filter net/ipv4/tcp_ipv4.c:1912 [inline] tcp_v4_rcv+0x1eb6/0x2af0 net/ipv4/tcp_ipv4.c:2094 ip_protocol_deliver_rcu+0x325/0x6e0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x24e/0x410 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:305 [inline] ip_local_deliver+0x1bc/0x340 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:463 [inline] ip_rcv_finish net/ipv4/ip_input.c:449 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ip_rcv+0x167/0x290 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5623 [inline] __netif_receive_skb+0xd7/0x2a0 net/core/dev.c:5737 process_backlog+0x351/0x600 net/core/dev.c:6065 __napi_poll+0xd0/0x5e0 net/core/dev.c:6632 napi_poll net/core/dev.c:6699 [inline] net_rx_action+0x4b6/0xac0 net/core/dev.c:6813 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642 run_ksoftirqd+0x28/0x30 kernel/softirq.c:1019 smpboot_thread_fn+0x4a0/0x910 kernel/smpboot.c:164 kthread+0x281/0x320 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:____bpf_get_local_storage kernel/bpf/cgroup.c:1573 [inline] RIP: 0010:bpf_get_local_storage+0x11b/0x180 kernel/bpf/cgroup.c:1557 Code: 59 6d 86 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 36 25 22 00 49 03 1e eb 22 e8 1c 8a dc ff 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 16 25 22 00 49 8b 1e 48 83 c3 10 RSP: 0018:ffffc900001872f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000013 RCX: ffff888100330000 RDX: 0000000000000100 RSI: 0000000000000013 RDI: 0000000000000015 RBP: ffffc90000187318 R08: ffffc90000187493 R09: ffffc90000187480 R10: dffffc0000000000 R11: fffff52000030e93 R12: dffffc0000000000 R13: ffffc9000398d002 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1734a80000 CR3: 0000000122d20000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 59 pop %rcx 1: 6d insl (%dx),%es:(%rdi) 2: 86 4c 89 f0 xchg %cl,-0x10(%rcx,%rcx,4) 6: 48 c1 e8 03 shr $0x3,%rax a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) f: 74 08 je 0x19 11: 4c 89 f7 mov %r14,%rdi 14: e8 36 25 22 00 call 0x22254f 19: 49 03 1e add (%r14),%rbx 1c: eb 22 jmp 0x40 1e: e8 1c 8a dc ff call 0xffdc8a3f 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 f7 mov %r14,%rdi 34: e8 16 25 22 00 call 0x22254f 39: 49 8b 1e mov (%r14),%rbx 3c: 48 83 c3 10 add $0x10,%rbx