syzbot


kernel BUG in pskb_expand_head (3)

Status: closed as invalid on 2024/09/04 18:07
Subsystems: net
[Documentation on labels]
First crash: 234d, last: 234d
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 kernel BUG in pskb_expand_head 1 616d 616d 0/2 auto-obsoleted due to no activity on 2023/09/05 19:11
upstream kernel BUG in pskb_expand_head (2) bpf net 10 629d 644d 0/28 auto-obsoleted due to no activity on 2023/08/23 09:08
linux-5.15 kernel BUG in pskb_expand_head 1 668d 668d 0/3 auto-obsoleted due to no activity on 2023/08/14 13:19
upstream kernel BUG in llc_sap_action_send_xid_c net C error 61 1191d 1405d 20/28 fixed on 2021/11/10 00:50
upstream kernel BUG in pskb_expand_head net C done 1600 734d 1185d 22/28 fixed on 2023/02/25 08:02
linux-6.1 kernel BUG in pskb_expand_head 1 624d 624d 0/3 auto-obsoleted due to no activity on 2023/09/07 17:22

Sample crash report:
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:2233!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 28457 Comm: syz-executor.1 Not tainted 6.10.0-rc4-syzkaller-00301-g5f583a3162ff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:pskb_expand_head+0x1343/0x1390 net/core/skbuff.c:2233
Code: f1 80 e1 07 80 c1 03 38 c1 0f 8c 35 f3 ff ff 4c 89 f7 e8 40 2c ab f8 e9 28 f3 ff ff e8 36 7f 45 f8 90 0f 0b e8 2e 7f 45 f8 90 <0f> 0b e8 26 2f 35 02 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc90004e5e7a0 EFLAGS: 00010202
RAX: ffffffff8950a662 RBX: 0000000000000002 RCX: ffff888055f39e00
RDX: 0000000000000003 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90004e5e8b0 R08: ffffffff89509456 R09: 0000000000200000
R10: 0000000000001aa6 R11: ffffed100afccee5 R12: dffffc0000000000
R13: ffff888057e67640 R14: ffff888057e6770c R15: 0000000000000780
FS:  00007f22e9bc26c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22e9bc2d58 CR3: 000000002e6cc000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __skb_cow include/linux/skbuff.h:3609 [inline]
 skb_cow_head include/linux/skbuff.h:3643 [inline]
 erspan_xmit+0x709/0x1310 net/ipv4/ip_gre.c:714
 __netdev_start_xmit include/linux/netdevice.h:4882 [inline]
 netdev_start_xmit include/linux/netdevice.h:4896 [inline]
 xmit_one net/core/dev.c:3578 [inline]
 dev_hard_start_xmit+0x27c/0x7e0 net/core/dev.c:3594
 sch_direct_xmit+0x2b6/0x5f0 net/sched/sch_generic.c:343
 __dev_xmit_skb net/core/dev.c:3807 [inline]
 __dev_queue_xmit+0x1a24/0x3d30 net/core/dev.c:4359
 bond_start_xmit+0x1389/0x1c40 drivers/net/bonding/bond_main.c:5469
 __netdev_start_xmit include/linux/netdevice.h:4882 [inline]
 netdev_start_xmit include/linux/netdevice.h:4896 [inline]
 xmit_one net/core/dev.c:3578 [inline]
 dev_hard_start_xmit+0x27c/0x7e0 net/core/dev.c:3594
 __dev_queue_xmit+0x1b0e/0x3d30 net/core/dev.c:4393
 llc_exec_sap_trans_actions net/llc/llc_sap.c:153 [inline]
 llc_sap_next_state net/llc/llc_sap.c:182 [inline]
 llc_sap_state_process+0x242/0x880 net/llc/llc_sap.c:209
 llc_ui_sendmsg+0xb03/0xf80 net/llc/af_llc.c:999
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x223/0x270 net/socket.c:745
 sock_sendmsg+0x134/0x200 net/socket.c:768
 splice_to_socket+0xa13/0x10b0 fs/splice.c:889
 do_splice_from fs/splice.c:941 [inline]
 direct_splice_actor+0x120/0x220 fs/splice.c:1164
 splice_direct_to_actor+0x590/0xc90 fs/splice.c:1108
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
 do_sendfile+0x56d/0xe10 fs/read_write.c:1295
 __do_sys_sendfile64 fs/read_write.c:1362 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1348
 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: 0033:0x7f22e8e7d0a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f22e9bc20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f22e8fb41f0 RCX: 00007f22e8e7d0a9
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000009
RBP: 00007f22e8eec074 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffefffff R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f22e8fb41f0 R15: 00007fff5f3dbeb8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pskb_expand_head+0x1343/0x1390 net/core/skbuff.c:2233
Code: f1 80 e1 07 80 c1 03 38 c1 0f 8c 35 f3 ff ff 4c 89 f7 e8 40 2c ab f8 e9 28 f3 ff ff e8 36 7f 45 f8 90 0f 0b e8 2e 7f 45 f8 90 <0f> 0b e8 26 2f 35 02 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc90004e5e7a0 EFLAGS: 00010202
RAX: ffffffff8950a662 RBX: 0000000000000002 RCX: ffff888055f39e00
RDX: 0000000000000003 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90004e5e8b0 R08: ffffffff89509456 R09: 0000000000200000
R10: 0000000000001aa6 R11: ffffed100afccee5 R12: dffffc0000000000
R13: ffff888057e67640 R14: ffff888057e6770c R15: 0000000000000780
FS:  00007f22e9bc26c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22e9bc2d58 CR3: 000000002e6cc000 CR4: 0000000000350ef0

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/23 10:39 upstream 5f583a3162ff edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in pskb_expand_head
* Struck through repros no longer work on HEAD.