BUG: unable to handle kernel NULL pointer dereference in bond_xdp

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit origin:lts-only	10	C		inconclusive	339	6h02m	456d	0/3	upstream: reported C repro on 2024/04/25 19:36
linux-5.15	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit	10				5	283d	343d	0/3	auto-obsoleted due to no activity on 2025/01/23 16:27

BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 62f26067 P4D 62f26067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 11354 Comm: syz.5.1552 Not tainted 5.15.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc900048c7618 EFLAGS: 00010246 RAX: 1ffffffff151934f RBX: 0000000000000000 RCX: 0000000000000001 RDX: ffffc900048c76c0 RSI: 0000000000000001 RDI: ffff88805ba80000 RBP: ffffc900048c7730 R08: dffffc0000000000 R09: ffffed100b750008 R10: ffffed100b750008 R11: 1ffff1100b750007 R12: ffffffff8a8c9a78 R13: dffffc0000000000 R14: ffff88805ba80000 R15: ffffe8ffffd6f150 FS: 00007f1aba0306c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000001b3a5000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 3a810b1eb6134bdc DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: <TASK> bond_xdp_xmit+0x282/0x420 drivers/net/bonding/bond_main.c:5228 bq_xmit_all+0xbb1/0xf60 kernel/bpf/devmap.c:391 __dev_flush+0xbf/0x1b0 kernel/bpf/devmap.c:421 xdp_do_flush+0xa/0x20 net/core/filter.c:3986 tun_build_skb drivers/net/tun.c:1703 [inline] tun_get_user+0x297c/0x38d0 drivers/net/tun.c:1797 tun_chr_write_iter+0x112/0x1e0 drivers/net/tun.c:2019 call_write_iter include/linux/fs.h:2172 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x712/0xd00 fs/read_write.c:594 ksys_write+0x14d/0x250 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1abc1c73df Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007f1aba030000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abc3effa0 RCX: 00007f1abc1c73df RDX: 0000000000000082 RSI: 0000200000000640 RDI: 00000000000000c8 RBP: 00007f1abc24ab39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000082 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1abc3effa0 R15: 00007fff209d1af8 </TASK> Modules linked in: CR2: 0000000000000000 ---[ end trace 01884669f8c0b091 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc900048c7618 EFLAGS: 00010246 RAX: 1ffffffff151934f RBX: 0000000000000000 RCX: 0000000000000001 RDX: ffffc900048c76c0 RSI: 0000000000000001 RDI: ffff88805ba80000 RBP: ffffc900048c7730 R08: dffffc0000000000 R09: ffffed100b750008 R10: ffffed100b750008 R11: 1ffff1100b750007 R12: ffffffff8a8c9a78 R13: dffffc0000000000 R14: ffff88805ba80000 R15: ffffe8ffffd6f150 FS: 00007f1aba0306c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000001b3a5000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 3a810b1eb6134bdc DR6: 00000000ffff0ff0 DR7: 0000000000000400

Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Assets (help?)	Manager	Title
2025/07/10 22:13	linux-5.15.y	2f693b607545	3cda49cf	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/06/15 14:34	linux-5.15.y	1c700860e8bc	5f4b362d	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/06/15 13:03	linux-5.15.y	1c700860e8bc	5f4b362d	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/05/28 23:05	linux-5.15.y	98f47d0e9b8c	3d2f584d	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/04/29 00:53	linux-5.15.y	f7347f400572	aeb6ec69	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/04/24 11:02	linux-5.15.y	f7347f400572	9882047a	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/04/03 23:03	linux-5.15.y	0c935c049b5c	d7ae3a11	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/03/26 08:19	linux-5.15.y	0c935c049b5c	89d30d73	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/03/18 19:35	linux-5.15.y	0c935c049b5c	22a6c2b1	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit
2025/03/12 05:18	linux-5.15.y	c16c81c81336	ee70e6db	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	BUG: unable to handle kernel NULL pointer dereference in bond_xdp_xmit