------------[ cut here ]------------ WARNING: CPU: 1 PID: 14844 at net/core/skbuff.c:1219 __sk_skb_reason_drop net/core/skbuff.c:1216 [inline] WARNING: CPU: 1 PID: 14844 at net/core/skbuff.c:1219 sk_skb_reason_drop+0x87/0x380 net/core/skbuff.c:1241 Modules linked in: CPU: 1 UID: 0 PID: 14844 Comm: syz.8.1072 Not tainted 6.13.0-rc2-syzkaller-00040-g6e8ba494d87d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__sk_skb_reason_drop net/core/skbuff.c:1216 [inline] RIP: 0010:sk_skb_reason_drop+0x87/0x380 net/core/skbuff.c:1241 Code: 00 00 00 fc ff df 41 8d 9e 00 00 fc ff bf 01 00 fc ff 89 de e8 ca 11 13 f8 81 fb 00 00 fc ff 77 3a 4c 89 e5 e8 7a 0d 13 f8 90 <0f> 0b 90 eb 5e bf 01 00 00 00 89 ee e8 a8 11 13 f8 85 ed 0f 8e 49 RSP: 0018:ffffc90000a18af8 EFLAGS: 00010246 RAX: ffffffff898c50c6 RBX: 00000000fffbffea RCX: ffff88803221bc00 RDX: 0000000000000100 RSI: 00000000fffbffea RDI: 00000000fffc0001 RBP: dffffc0000000000 R08: ffffffff898c50b6 R09: 1ffff1100b55cdd4 R10: dffffc0000000000 R11: ffffed100b55cdd5 R12: dffffc0000000000 R13: ffff88805aae6dc0 R14: 00000000ffffffea R15: 0000000000000000 FS: 00007f58a04a06c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f21eff8 CR3: 000000002a77e000 CR4: 00000000003526f0 DR0: fffffffffffffff8 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: kfree_skb_reason include/linux/skbuff.h:1263 [inline] ip_expire+0x343/0x740 net/ipv4/ip_fragment.c:199 call_timer_fn+0x187/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:389 Code: 8c e8 94 83 66 0a 65 66 8b 05 34 21 a2 7e 66 85 c0 75 5d bf 01 00 00 00 e8 5d bd 0b 00 e8 18 73 45 00 fb 65 8b 05 f8 20 a2 7e <85> c0 75 05 e8 77 92 a8 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c RSP: 0018:ffffc90003547a80 EFLAGS: 00000282 RAX: 0000000000000001 RBX: 1ffff920006a8f54 RCX: ffffffff81a7271c RDX: dffffc0000000000 RSI: ffffffff8c5f9920 RDI: ffffffff8161b508 RBP: ffffc90003547b30 R08: ffffffff901965f7 R09: 1ffffffff2032cbe R10: dffffc0000000000 R11: fffffbfff2032cbf R12: dffffc0000000000 R13: 1ffff920006a8f58 R14: ffffc90003547ac0 R15: 0000000000000201 spin_unlock_bh include/linux/spinlock.h:396 [inline] bpf_prog_alloc_id+0xa7/0x100 kernel/bpf/syscall.c:2265 bpf_prog_load+0x172a/0x20f0 kernel/bpf/syscall.c:2955 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5790 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline] __se_sys_bpf kernel/bpf/syscall.c:5895 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f589f77ff19 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f58a04a0058 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f589f945fa0 RCX: 00007f589f77ff19 RDX: 0000000000000090 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 00007f589f7f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f589f945fa0 R15: 00007fff92b207a8 ---------------- Code disassembly (best guess): 0: 8c e8 mov %gs,%eax 2: 94 xchg %eax,%esp 3: 83 66 0a 65 andl $0x65,0xa(%rsi) 7: 66 8b 05 34 21 a2 7e mov 0x7ea22134(%rip),%ax # 0x7ea22142 e: 66 85 c0 test %ax,%ax 11: 75 5d jne 0x70 13: bf 01 00 00 00 mov $0x1,%edi 18: e8 5d bd 0b 00 call 0xbbd7a 1d: e8 18 73 45 00 call 0x45733a 22: fb sti 23: 65 8b 05 f8 20 a2 7e mov %gs:0x7ea220f8(%rip),%eax # 0x7ea22122 * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 75 05 jne 0x33 2e: e8 77 92 a8 ff call 0xffa892aa 33: 48 c7 44 24 20 0e 36 movq $0x45e0360e,0x20(%rsp) 3a: e0 45 3c: 49 rex.WB 3d: c7 .byte 0xc7 3e: 04 1c add $0x1c,%al