syzbot


general protection fault in bpf_get_attach_cookie_tracing

Status: fixed on 2024/06/18 10:18
Subsystems: bpf trace
[Documentation on labels]
Reported-by: syzbot+3ab78ff125b7979e45f9@syzkaller.appspotmail.com
Fix commit: d0d1df8ba18a bpf: Set run context for rawtp test_run callback
First crash: 47d, last: 16d
Cause bisection: failed (error log, bisect log)
  
Discussions (4)
Title Replies (including bot) Last reply
[PATCHv2 bpf] bpf: Set run context for rawtp test_run callback 2 (2) 2024/06/04 17:50
[PATCH bpf] bpf: Set run context for rawtp test_run callback 3 (3) 2024/06/04 07:42
[syzbot] Monthly trace report (May 2024) 3 (4) 2024/06/02 21:06
[syzbot] [bpf?] [trace?] general protection fault in bpf_get_attach_cookie_tracing 1 (2) 2024/05/07 21:23

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 5094 Comm: syz-executor307 Not tainted 6.9.0-syzkaller-12126-gfb66df20a720 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:____bpf_get_attach_cookie_tracing kernel/trace/bpf_trace.c:1179 [inline]
RIP: 0010:bpf_get_attach_cookie_tracing+0x46/0x60 kernel/trace/bpf_trace.c:1174
Code: d5 03 00 48 81 c3 00 18 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 24 82 5a 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 0b 82 5a 00 48 8b 03 5b 41 5e c3
RSP: 0018:ffffc9000358fba8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8880227b0000
RDX: 0000000000000000 RSI: ffffc90000ace048 RDI: 0000000000000000
RBP: ffffc9000358fbc0 R08: ffffffff8997ee77 R09: 1ffffffff25f4ab0
R10: dffffc0000000000 R11: ffffffffa0000950 R12: ffffc9000358fc80
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000555575749380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000142 CR3: 00000000757ae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bpf_prog_fe13437f26555f61+0x1a/0x1c
 bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
 __bpf_prog_run include/linux/filter.h:691 [inline]
 bpf_prog_run include/linux/filter.h:698 [inline]
 __bpf_prog_test_run_raw_tp+0x149/0x310 net/bpf/test_run.c:732
 bpf_prog_test_run_raw_tp+0x47b/0x6a0 net/bpf/test_run.c:772
 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4291
 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5705
 __do_sys_bpf kernel/bpf/syscall.c:5794 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5792 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5792
 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: 0033:0x7fbe2bd9f4a9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff622db708 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fff622db8d8 RCX: 00007fbe2bd9f4a9
RDX: 000000000000000c RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007fbe2be12610 R08: 0000000000000000 R09: 00007fff622db8d8
R10: 00007fbe2bddab23 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff622db8c8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:____bpf_get_attach_cookie_tracing kernel/trace/bpf_trace.c:1179 [inline]
RIP: 0010:bpf_get_attach_cookie_tracing+0x46/0x60 kernel/trace/bpf_trace.c:1174
Code: d5 03 00 48 81 c3 00 18 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 24 82 5a 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 0b 82 5a 00 48 8b 03 5b 41 5e c3
RSP: 0018:ffffc9000358fba8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8880227b0000
RDX: 0000000000000000 RSI: ffffc90000ace048 RDI: 0000000000000000
RBP: ffffc9000358fbc0 R08: ffffffff8997ee77 R09: 1ffffffff25f4ab0
R10: dffffc0000000000 R11: ffffffffa0000950 R12: ffffc9000358fc80
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000555575749380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000142 CR3: 00000000757ae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	03 00                	add    (%rax),%eax
   2:	48 81 c3 00 18 00 00 	add    $0x1800,%rbx
   9:	48 89 d8             	mov    %rbx,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
  15:	74 08                	je     0x1f
  17:	48 89 df             	mov    %rbx,%rdi
  1a:	e8 24 82 5a 00       	call   0x5a8243
  1f:	48 8b 1b             	mov    (%rbx),%rbx
  22:	48 89 d8             	mov    %rbx,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	48 89 df             	mov    %rbx,%rdi
  33:	e8 0b 82 5a 00       	call   0x5a8243
  38:	48 8b 03             	mov    (%rbx),%rax
  3b:	5b                   	pop    %rbx
  3c:	41 5e                	pop    %r14
  3e:	c3                   	ret

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/29 10:19 net fb66df20a720 34889ee3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce general protection fault in bpf_get_attach_cookie_tracing
2024/05/05 12:49 bpf-next a9e7715ce8b3 610f2a54 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce general protection fault in bpf_get_attach_cookie_tracing
2024/06/05 14:44 net 5b4b62a169e1 e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce general protection fault in bpf_get_attach_cookie_tracing
2024/06/02 22:08 bpf-next 531876c80004 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce general protection fault in bpf_get_attach_cookie_tracing
2024/05/19 00:06 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce general protection fault in bpf_get_attach_cookie_tracing
2024/05/15 09:05 bpf-next 5c1672705a1a fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce general protection fault in bpf_get_attach_cookie_tracing
2024/05/05 12:21 bpf-next a9e7715ce8b3 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce general protection fault in bpf_get_attach_cookie_tracing
* Struck through repros no longer work on HEAD.