syzbot


BUG: unable to handle kernel paging request in bpf_prog_ADDR (2)

Status: upstream: reported C repro on 2024/04/09 03:53
Subsystems: bpf
[Documentation on labels]
Reported-by: syzbot+838346b979830606c854@syzkaller.appspotmail.com
Fix commit: 543576ec15b1 bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-badwrites-root ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce-386-root ci-upstream-kmsan-gce-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-net-next-test-gce], missing on: [ci-qemu2-riscv64 ci-upstream-gce-arm64 ci2-upstream-usb]
First crash: 46d, last: 28d
Discussions (2)
Title Replies (including bot) Last reply
[PATCH bpf 1/3] bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE 3 (3) 2024/04/29 21:17
[syzbot] [bpf?] BUG: unable to handle kernel paging request in bpf_prog_ADDR (2) 4 (5) 2024/04/22 16:03
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in bpf_prog_ADDR kernel C done 13 1751d 1768d 12/26 fixed on 2019/08/27 17:15
upstream BUG: sleeping function called from invalid context in do_user_addr_fault (2) syz done error 27 679d 1243d 0/26 auto-obsoleted due to no activity on 2023/12/05 09:08
upstream BUG: unable to handle kernel NULL pointer dereference in bpf_prog_ADDR net bpf syz error error 19 1074d 1387d 0/26 auto-obsoleted due to no activity on 2023/04/14 06:50
Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/04/22 09:38 17m retest repro upstream report log
2024/04/22 09:38 4h06m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log

Sample crash report:
BUG: unable to handle page fault for address: 0000001000000112
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 800000002e7b1067 P4D 800000002e7b1067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 PID: 5060 Comm: syz-executor351 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:bpf_prog_a8e24a805b35c61b+0x19/0x1e
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc f3 0f 1e fa 0f 1f 44 00 00 66 90 55 48 89 e5 f3 0f 1e fa 31 c0 48 8b 7f 18 <8b> 7f 00 c9 c3 cc cc cc cc cc cc 40 03 00 00 cc cc cc cc cc cc cc
RSP: 0018:ffffc90003b07b30 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000ace048 RCX: ffff88802aa89e00
RDX: 0000000000000000 RSI: ffffc90000ace048 RDI: 0000001000000112
RBP: ffffc90003b07b30 R08: ffffffff81bf633c R09: 1ffffffff2595ca0
R10: dffffc0000000000 R11: ffffffffa000095c R12: ffffc90000ace030
R13: ffff88802ac3ae28 R14: dffffc0000000000 R15: ffff88802ac3ae28
FS:  000055558f759380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001000000112 CR3: 0000000077cfa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
 __bpf_prog_run include/linux/filter.h:657 [inline]
 bpf_prog_run include/linux/filter.h:664 [inline]
 bpf_prog_run_array_cg kernel/bpf/cgroup.c:51 [inline]
 __cgroup_bpf_run_filter_setsockopt+0x6fa/0x1040 kernel/bpf/cgroup.c:1830
 do_sock_setsockopt+0x6b4/0x720 net/socket.c:2293
 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334
 __do_sys_setsockopt net/socket.c:2343 [inline]
 __se_sys_setsockopt net/socket.c:2340 [inline]
 __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fb234535cc9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 18 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd33db0138 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb234535cc9
RDX: 0000000000000010 RSI: 0000000000000112 RDI: 0000000000000007
RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000055558f759338
R13: 0000000000000010 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
CR2: 0000001000000112
---[ end trace 0000000000000000 ]---
RIP: 0010:bpf_prog_a8e24a805b35c61b+0x19/0x1e
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc f3 0f 1e fa 0f 1f 44 00 00 66 90 55 48 89 e5 f3 0f 1e fa 31 c0 48 8b 7f 18 <8b> 7f 00 c9 c3 cc cc cc cc cc cc 40 03 00 00 cc cc cc cc cc cc cc
RSP: 0018:ffffc90003b07b30 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000ace048 RCX: ffff88802aa89e00
RDX: 0000000000000000 RSI: ffffc90000ace048 RDI: 0000001000000112
RBP: ffffc90003b07b30 R08: ffffffff81bf633c R09: 1ffffffff2595ca0
R10: dffffc0000000000 R11: ffffffffa000095c R12: ffffc90000ace030
R13: ffff88802ac3ae28 R14: dffffc0000000000 R15: ffff88802ac3ae28
FS:  000055558f759380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001000000112 CR3: 0000000077cfa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	cc                   	int3
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	cc                   	int3
   a:	cc                   	int3
   b:	cc                   	int3
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	f3 0f 1e fa          	endbr64
  15:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  1a:	66 90                	xchg   %ax,%ax
  1c:	55                   	push   %rbp
  1d:	48 89 e5             	mov    %rsp,%rbp
  20:	f3 0f 1e fa          	endbr64
  24:	31 c0                	xor    %eax,%eax
  26:	48 8b 7f 18          	mov    0x18(%rdi),%rdi
* 2a:	8b 7f 00             	mov    0x0(%rdi),%edi <-- trapping instruction
  2d:	c9                   	leave
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	40 03 00             	rex add (%rax),%eax
  38:	00 cc                	add    %cl,%ah
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	cc                   	int3
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/05 04:30 upstream fe46a7dd189e 0ee3535e .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: unable to handle kernel paging request in bpf_prog_ADDR
2024/04/05 22:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 707081b61156 18ea8213 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in bpf_prog_ADDR
2024/04/05 03:44 upstream fe46a7dd189e 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: unable to handle kernel paging request in bpf_prog_ADDR
* Struck through repros no longer work on HEAD.