WARNING in __mark_chain

Title	Replies (including bot)	Last reply
[PATCH bpf] bpf: fix precision tracking of stack slots	2 (2)	2019/09/05 13:15
WARNING in __mark_chain_precision (2)	1 (3)	2019/09/03 00:40

Title

Replies (including bot)

Last reply

[PATCH bpf] bpf: fix precision tracking of stack slots

2 (2)

2019/09/05 13:15

WARNING in __mark_chain_precision (2)

1 (3)

2019/09/03 00:40

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in __mark_chain_precision (4) bpf	C		8	1d17h	21d	2/26	upstream: reported C repro on 2024/04/01 16:51
upstream	WARNING in __mark_chain_precision (3) bpf	C	done	19	113d	134d	26/26	fixed on 2024/01/31 06:43
upstream	WARNING in __mark_chain_precision	C	done	105	1714d	1750d	12/26	fixed on 2019/08/14 02:14

------------[ cut here ]------------ verifier backtracking bug WARNING: CPU: 0 PID: 8795 at kernel/bpf/verifier.c:1782 __mark_chain_precision+0x197a/0x1ea0 kernel/bpf/verifier.c:1782 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 8795 Comm: syz-executor439 Not tainted 5.3.0-rc3+ #101 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2dc/0x755 kernel/panic.c:219 __warn.cold+0x20/0x4c kernel/panic.c:576 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:__mark_chain_precision+0x197a/0x1ea0 kernel/bpf/verifier.c:1782 Code: 08 31 ff 89 de e8 a6 9e f2 ff 84 db 0f 85 07 ff ff ff e8 59 9d f2 ff 48 c7 c7 a0 a7 91 87 c6 05 3d c6 21 08 01 e8 1e 10 c4 ff <0f> 0b 41 bc f2 ff ff ff e9 e8 fe ff ff 48 8b bd d8 fe ff ff e8 cd RSP: 0018:ffff88808609f380 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815c3ba6 RDI: ffffed1010c13e62 RBP: ffff88808609f4d0 R08: ffff8880a97940c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff8880985b6cc0 R14: ffff88808e538e80 R15: ffff88808609f468 mark_chain_precision kernel/bpf/verifier.c:1819 [inline] check_cond_jmp_op+0xcd8/0x3c30 kernel/bpf/verifier.c:5841 do_check+0x63cd/0x8a30 kernel/bpf/verifier.c:7783 bpf_check+0x6fff/0x99b2 kernel/bpf/verifier.c:9297 bpf_prog_load+0xe68/0x1670 kernel/bpf/syscall.c:1709 __do_sys_bpf+0xa44/0x3350 kernel/bpf/syscall.c:2860 __se_sys_bpf kernel/bpf/syscall.c:2819 [inline] __x64_sys_bpf+0x73/0xb0 kernel/bpf/syscall.c:2819 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4402a9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc52f10618 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402a9 RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401b30 R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..

Crashes (18):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Manager
2019/08/28 01:04	bpf-next	47ee6e86e0a3	fd37b39e	.config	console log	report	syz	C	ci-upstream-bpf-next-kasan-gce
2019/09/12 16:51	upstream	ad32b4800c2b	0b7672ee	.config	console log	report			ci-upstream-kasan-gce-smack-root
2019/09/11 08:35	upstream	3120b9a6a3f7	a60cb4cd	.config	console log	report			ci-upstream-kasan-gce-root
2019/09/11 08:30	upstream	3120b9a6a3f7	a60cb4cd	.config	console log	report			ci-upstream-kasan-gce-selinux-root
2019/09/08 23:28	upstream	950b07c14e8c	a60cb4cd	.config	console log	report			ci-upstream-kasan-gce-selinux-root
2019/09/08 23:28	upstream	950b07c14e8c	a60cb4cd	.config	console log	report			ci-upstream-kasan-gce-smack-root
2019/09/08 23:27	upstream	950b07c14e8c	a60cb4cd	.config	console log	report			ci-upstream-kasan-gce-root
2019/09/07 22:52	upstream	1e3778cb223e	a60cb4cd	.config	console log	report			ci-upstream-kasan-gce-selinux-root
2019/09/05 21:58	upstream	3b47fd5ca9ea	040fda58	.config	console log	report			ci-upstream-kasan-gce-root
2019/09/05 21:55	upstream	3b47fd5ca9ea	040fda58	.config	console log	report			ci-upstream-kasan-gce-selinux-root
2019/09/16 21:33	bpf-next	af58e7ee6a8d	cb936299	.config	console log	report			ci-upstream-bpf-next-kasan-gce
2019/09/12 08:09	bpf-next	a2c11b034142	f4e53c10	.config	console log	report			ci-upstream-bpf-next-kasan-gce
2019/09/09 07:07	bpf-next	a2c11b034142	a60cb4cd	.config	console log	report			ci-upstream-bpf-next-kasan-gce
2019/09/08 23:28	bpf-next	a2c11b034142	a60cb4cd	.config	console log	report			ci-upstream-bpf-next-kasan-gce
2019/09/08 23:28	net-next-old	6703a605b5ab	a60cb4cd	.config	console log	report			ci-upstream-net-kasan-gce
2019/09/04 19:01	bpf-next	110509df4540	040fda58	.config	console log	report			ci-upstream-bpf-next-kasan-gce
2019/08/28 00:41	bpf-next	47ee6e86e0a3	fd37b39e	.config	console log	report			ci-upstream-bpf-next-kasan-gce
2019/09/08 23:27	linux-next	6d028043b55e	a60cb4cd	.config	console log	report			ci-upstream-linux-next-kasan-gce-root

Crashes (18):

Assets (help?)

2019/08/28 01:04

bpf-next