Oops: general protection fault, probably for non-canonical address 0xec6caa6dc406e6a7: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: maybe wild-memory-access in range [0x6365736e20373538-0x6365736e2037353f] CPU: 1 UID: 0 PID: 17725 Comm: syz.3.3117 Not tainted 6.12.0-rc5-next-20241101-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:_compound_head include/linux/page-flags.h:242 [inline] RIP: 0010:put_page+0x23/0x260 include/linux/mm.h:1552 Code: 90 90 90 90 90 90 90 55 41 57 41 56 53 49 89 fe 48 bd 00 00 00 00 00 fc ff df e8 28 78 0d f8 49 8d 5e 08 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 4f bc 77 f8 48 8b 1b 48 89 de 48 83 RSP: 0018:ffffc9000f8e70a8 EFLAGS: 00010203 RAX: 0c6cae6dc406e6a7 RBX: 6365736e2037353c RCX: 0000000000040000 RDX: ffffc90014ed8000 RSI: 000000000001a27d RDI: 000000000001a27e RBP: dffffc0000000000 R08: ffffffff8987d8fd R09: 1ffffffff203a1f6 R10: dffffc0000000000 R11: fffffbfff203a1f7 R12: 0000000000000000 R13: ffff888066616542 R14: 6365736e20373534 R15: 6365736e20373534 FS: 00007fedabfb96c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffde000000 CR3: 00000000348d0000 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+0x483/0x8a0 net/core/skbuff.c:1119 skb_release_all net/core/skbuff.c:1190 [inline] __kfree_skb net/core/skbuff.c:1204 [inline] sk_skb_reason_drop+0x1c9/0x380 net/core/skbuff.c:1242 kfree_skb_reason include/linux/skbuff.h:1262 [inline] kfree_skb include/linux/skbuff.h:1271 [inline] __ip_flush_pending_frames net/ipv4/ip_output.c:1538 [inline] ip_flush_pending_frames+0x12d/0x260 net/ipv4/ip_output.c:1545 udp_flush_pending_frames net/ipv4/udp.c:829 [inline] udp_sendmsg+0x5d2/0x2a50 net/ipv4/udp.c:1302 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:744 sock_sendmsg+0x134/0x200 net/socket.c:767 splice_to_socket+0xa10/0x10b0 fs/splice.c:889 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x11b/0x220 fs/splice.c:1164 splice_direct_to_actor+0x586/0xc80 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0x289/0x3e0 fs/splice.c:1233 do_sendfile+0x561/0xe10 fs/read_write.c:1388 __do_sys_sendfile64 fs/read_write.c:1455 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1441 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: 0033:0x7fedab17e719 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:00007fedabfb9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fedab336130 RCX: 00007fedab17e719 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 000000000000000a RBP: 00007fedab1f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000020000023893 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fedab336130 R15: 00007ffe7acc9118 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_compound_head include/linux/page-flags.h:242 [inline] RIP: 0010:put_page+0x23/0x260 include/linux/mm.h:1552 Code: 90 90 90 90 90 90 90 55 41 57 41 56 53 49 89 fe 48 bd 00 00 00 00 00 fc ff df e8 28 78 0d f8 49 8d 5e 08 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 4f bc 77 f8 48 8b 1b 48 89 de 48 83 RSP: 0018:ffffc9000f8e70a8 EFLAGS: 00010203 RAX: 0c6cae6dc406e6a7 RBX: 6365736e2037353c RCX: 0000000000040000 RDX: ffffc90014ed8000 RSI: 000000000001a27d RDI: 000000000001a27e RBP: dffffc0000000000 R08: ffffffff8987d8fd R09: 1ffffffff203a1f6 R10: dffffc0000000000 R11: fffffbfff203a1f7 R12: 0000000000000000 R13: ffff888066616542 R14: 6365736e20373534 R15: 6365736e20373534 FS: 00007fedabfb96c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffde000000 CR3: 00000000348d0000 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: 55 push %rbp 8: 41 57 push %r15 a: 41 56 push %r14 c: 53 push %rbx d: 49 89 fe mov %rdi,%r14 10: 48 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%rbp 17: fc ff df 1a: e8 28 78 0d f8 call 0xf80d7847 1f: 49 8d 5e 08 lea 0x8(%r14),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 4f bc 77 f8 call 0xf877bc87 38: 48 8b 1b mov (%rbx),%rbx 3b: 48 89 de mov %rbx,%rsi 3e: 48 rex.W 3f: 83 .byte 0x83