general protection fault in free_verifier

Title	Replies (including bot)	Last reply
[PATCH bpf-next] bpf: fix verifier GPF in kmalloc failure path	2 (2)	2018/01/08 17:33
general protection fault in free_verifier_state (2)	1 (2)	2018/01/08 15:48

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Last reply

[PATCH bpf-next] bpf: fix verifier GPF in kmalloc failure path

2 (2)

2018/01/08 17:33

general protection fault in free_verifier_state (2)

1 (2)

2018/01/08 15:48

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in free_verifier_state (3) bpf	C			5	1690d	1697d	15/27	fixed on 2020/02/18 14:31
upstream	general protection fault in free_verifier_state bpf	C			2	2452d	2452d	3/27	fixed on 2017/12/27 08:45

RBP: 0000000000000006 R08: 0000000000000002 R09: 00007ffd20003032 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: ffffffffffffffff R14: 656c6c616b7a7973 R15: 0000000000000004 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 3468 Comm: syzkaller619543 Not tainted 4.15.0-rc6-next-20180108+ #90 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:free_func_state kernel/bpf/verifier.c:378 [inline] RIP: 0010:free_verifier_state+0x6d/0x130 kernel/bpf/verifier.c:388 RSP: 0018:ffff8801d48f77b8 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff1003b6384a0 RDX: 0000000000000000 RSI: 0000000000000071 RDI: 0000000000000388 RBP: ffff8801d48f7800 R08: ffff8801db427d00 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801db1c2500 R13: dffffc0000000000 R14: ffff8801db1c2500 R15: ffff8801db1c2500 FS: 000000000254e880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020386000 CR3: 00000001cb32e002 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: is_state_visited kernel/bpf/verifier.c:4414 [inline] do_check+0x2442/0x9760 kernel/bpf/verifier.c:4488 bpf_check+0x3087/0x5580 kernel/bpf/verifier.c:5483 bpf_prog_load+0xbb2/0x1260 kernel/bpf/syscall.c:1205 SYSC_bpf kernel/bpf/syscall.c:1820 [inline] SyS_bpf+0x861/0x32e0 kernel/bpf/syscall.c:1782 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x4406e9 RSP: 002b:00007ffd20275c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000004406e9 RDX: 0000000000000048 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 0000000000000006 R08: 0000000000000002 R09: 00007ffd20003032 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: ffffffffffffffff R14: 656c6c616b7a7973 R15: 0000000000000004 Code: 1a 36 f4 ff 4c 89 f1 48 c1 e9 03 42 80 3c 29 00 0f 85 c1 00 00 00 4f 8d 3c fc 49 8b 07 48 8d b8 88 03 00 00 48 89 fe 48 c1 ee 03 <42> 80 3c 2e 00 0f 85 8f 00 00 00 48 8b b8 88 03 00 00 48 89 45 RIP: free_func_state kernel/bpf/verifier.c:378 [inline] RSP: ffff8801d48f77b8 RIP: free_verifier_state+0x6d/0x130 kernel/bpf/verifier.c:388 RSP: ffff8801d48f77b8 ---[ end trace 4b8783cb068d7042 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2018/01/08 06:16	linux-next	895c0dde3985	19c05fff	.config	console log	report	syz	C			ci-upstream-next-kasan-gce
2018/01/08 06:01	linux-next	895c0dde3985	19c05fff	.config	console log	report					ci-upstream-next-kasan-gce

Crashes (2):

Assets (help?)