Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 UID: 0 PID: 7016 Comm: syz.0.272 Not tainted 6.13.0-rc3-syzkaller-00044-gaef25be35d23 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:_compound_head include/linux/page-flags.h:242 [inline] RIP: 0010:put_page+0x21/0x280 include/linux/mm.h:1552 Code: 90 90 90 90 90 90 90 90 90 41 54 55 53 48 89 fb e8 64 ed 97 f8 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 20 02 00 00 4c 8b 63 08 31 ff 4c 89 e5 83 e5 01 RSP: 0018:ffffc90000a18428 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8903a648 RDX: 0000000000000001 RSI: ffffffff890227ec RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000004 R12: ffff8880336be280 R13: ffff8880363ea240 R14: ffff8880363ea270 R15: 0000000000000007 FS: 00007f0fa51e56c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020022030 CR3: 000000005b66c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_page_unref include/linux/skbuff_ref.h:43 [inline] __skb_frag_unref include/linux/skbuff_ref.h:56 [inline] skb_release_data+0x4d7/0x730 net/core/skbuff.c:1119 skb_release_all net/core/skbuff.c:1190 [inline] __kfree_skb+0x4f/0x70 net/core/skbuff.c:1204 tcp_wmem_free_skb include/net/tcp.h:306 [inline] tcp_rtx_queue_unlink_and_free include/net/tcp.h:2091 [inline] tcp_clean_rtx_queue net/ipv4/tcp_input.c:3436 [inline] tcp_ack+0x1eb7/0x5ba0 net/ipv4/tcp_input.c:4032 tcp_rcv_state_process+0xdd4/0x4c40 net/ipv4/tcp_input.c:6805 tcp_v4_do_rcv+0x1ad/0xa90 net/ipv4/tcp_ipv4.c:1939 tcp_v4_rcv+0x33a0/0x4380 net/ipv4/tcp_ipv4.c:2351 ip_protocol_deliver_rcu+0xba/0x4c0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x316/0x570 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip_local_deliver+0x18e/0x1f0 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_rcv_finish net/ipv4/ip_input.c:447 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] ip_rcv+0x2c3/0x5d0 net/ipv4/ip_input.c:567 __netif_receive_skb_one_core+0x199/0x1e0 net/core/dev.c:5672 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785 process_backlog+0x443/0x15f0 net/core/dev.c:6117 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0xa94/0x1010 net/core/dev.c:7074 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5814 Code: b8 ff ff ff ff 65 0f c1 05 90 c2 8b 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffffc90003197bb8 EFLAGS: 00000206 RAX: 0000000000000046 RBX: 1ffff92000632f78 RCX: ffffffff8175d0de RDX: 0000000000000001 RSI: ffffffff8b6cdb60 RDI: ffffffff8bd1e920 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2dca19f R10: ffffffff96e50cff R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880620d81e0 R14: 0000000000000000 R15: 0000000000000000 __might_fault mm/memory.c:6751 [inline] __might_fault+0x11b/0x190 mm/memory.c:6744 do_recvmmsg+0x321/0x740 net/socket.c:2946 __sys_recvmmsg net/socket.c:3014 [inline] __do_sys_recvmmsg net/socket.c:3037 [inline] __se_sys_recvmmsg net/socket.c:3030 [inline] __x64_sys_recvmmsg+0x239/0x290 net/socket.c:3030 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0fa4385d29 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:00007f0fa51e5038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f0fa4576080 RCX: 00007f0fa4385d29 RDX: 03fffffffffffeda RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f0fa4401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f0fa4576080 R15: 00007ffcc1901238 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:242 [inline] RIP: 0010:put_page+0x21/0x280 include/linux/mm.h:1552 Code: 90 90 90 90 90 90 90 90 90 41 54 55 53 48 89 fb e8 64 ed 97 f8 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 20 02 00 00 4c 8b 63 08 31 ff 4c 89 e5 83 e5 01 RSP: 0018:ffffc90000a18428 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8903a648 RDX: 0000000000000001 RSI: ffffffff890227ec RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000004 R12: ffff8880336be280 R13: ffff8880363ea240 R14: ffff8880363ea270 R15: 0000000000000007 FS: 00007f0fa51e56c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020022030 CR3: 000000005b66c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 41 54 push %r12 b: 55 push %rbp c: 53 push %rbx d: 48 89 fb mov %rdi,%rbx 10: e8 64 ed 97 f8 call 0xf897ed79 15: 48 8d 7b 08 lea 0x8(%rbx),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 20 02 00 00 jne 0x254 34: 4c 8b 63 08 mov 0x8(%rbx),%r12 38: 31 ff xor %edi,%edi 3a: 4c 89 e5 mov %r12,%rbp 3d: 83 e5 01 and $0x1,%ebp