syzbot

BUG: unable to handle page fault for address: 00000d20ffffea08
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8394 Comm: syz-fuzzer Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:find_stack lib/stackdepot.c:209 [inline]
RIP: 0010:stack_depot_save+0x12b/0x4e0 lib/stackdepot.c:281
Code: 05 6a e9 2f 0c 89 da 81 e2 ff ff 0f 00 4c 8d 3c d0 4d 8b 37 4d 85 f6 75 11 e9 94 00 00 00 4d 8b 36 4d 85 f6 0f 84 88 00 00 00 <41> 39 5e 08 75 ee 45 3b 66 0c 75 e8 31 c0 49 8b 4c c6 18 48 39 4c
RSP: 0018:ffffc9000163f3d0 EFLAGS: 00010206
RAX: ffff88823b000000 RBX: 000000005cad657a RCX: 0000000000000003
RDX: 00000000000d657a RSI: 0000000000000800 RDI: 000000003324e6b1
RBP: ffffc9000163f440 R08: 00000000cf5c0c2d R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000015
R13: 0000000000000015 R14: 00000d20ffffea00 R15: ffff88823b6b2bd0
FS:  000000c00002e490(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000d20ffffea08 CR3: 0000000013226000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kasan_save_stack+0x32/0x40 mm/kasan/common.c:40
 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357
 ____kasan_slab_free mm/kasan/common.c:360 [inline]
 ____kasan_slab_free mm/kasan/common.c:325 [inline]
 __kasan_slab_free+0xf5/0x130 mm/kasan/common.c:367
 kasan_slab_free include/linux/kasan.h:199 [inline]
 slab_free_hook mm/slub.c:1562 [inline]
 slab_free_freelist_hook+0x92/0x210 mm/slub.c:1600
 slab_free mm/slub.c:3161 [inline]
 kmem_cache_free+0x8a/0x740 mm/slub.c:3177
 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:683
 __kfree_skb net/core/skbuff.c:740 [inline]
 kfree_skb_partial+0x8b/0xa0 net/core/skbuff.c:5264
 tcp_data_queue+0x20b6/0x4b10 net/ipv4/tcp_input.c:4991
 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881
 tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1694
 sk_backlog_rcv include/net/sock.h:1020 [inline]
 __release_sock+0x134/0x3b0 net/core/sock.c:2550
 release_sock+0x54/0x1b0 net/core/sock.c:3074
 tcp_recvmsg+0x13f/0x550 net/ipv4/tcp.c:2552
 inet_recvmsg+0x11b/0x5d0 net/ipv4/af_inet.c:852
 sock_recvmsg_nosec net/socket.c:888 [inline]
 sock_recvmsg net/socket.c:906 [inline]
 sock_recvmsg net/socket.c:902 [inline]
 sock_read_iter+0x33c/0x470 net/socket.c:979
 call_read_iter include/linux/fs.h:1971 [inline]
 new_sync_read+0x5b7/0x6e0 fs/read_write.c:415
 vfs_read+0x35c/0x570 fs/read_write.c:496
 ksys_read+0x1ee/0x250 fs/read_write.c:634
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4af19b
Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
RSP: 002b:000000c00030d850 EFLAGS: 00000206 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b
RDX: 0000000000001000 RSI: 000000c0000b6000 RDI: 0000000000000006
RBP: 000000c00030d8a0 R08: 0000000000000001 R09: 0000000000000002
R10: 0000000000003cc8 R11: 0000000000000206 R12: 0000000000003cc4
R13: 0000000000000200 R14: 0000000000000002 R15: 0000000000000002
Modules linked in:
CR2: 00000d20ffffea08
---[ end trace 7ec5d3e0f9283607 ]---
RIP: 0010:find_stack lib/stackdepot.c:209 [inline]
RIP: 0010:stack_depot_save+0x12b/0x4e0 lib/stackdepot.c:281
Code: 05 6a e9 2f 0c 89 da 81 e2 ff ff 0f 00 4c 8d 3c d0 4d 8b 37 4d 85 f6 75 11 e9 94 00 00 00 4d 8b 36 4d 85 f6 0f 84 88 00 00 00 <41> 39 5e 08 75 ee 45 3b 66 0c 75 e8 31 c0 49 8b 4c c6 18 48 39 4c
RSP: 0018:ffffc9000163f3d0 EFLAGS: 00010206
RAX: ffff88823b000000 RBX: 000000005cad657a RCX: 0000000000000003
RDX: 00000000000d657a RSI: 0000000000000800 RDI: 000000003324e6b1
RBP: ffffc9000163f440 R08: 00000000cf5c0c2d R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000015
R13: 0000000000000015 R14: 00000d20ffffea00 R15: ffff88823b6b2bd0
FS:  000000c00002e490(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc272ae3000 CR3: 0000000013226000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400