WARNING in bpf_check (3)

WARNING in bpf_check (3)
Status: upstream: reported C repro on 2020/03/12 21:37
Reported-by: syzbot+245129539c27fecf099a@syzkaller.appspotmail.com
First crash: 360d, last: 3d00h

Cause bisection: introduced by (bisect log) :
commit 94dacdbd5d2dfa2cffd308f128d78c99f855f5be
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Mon Feb 24 14:01:32 2020 +0000

bpf: Tighten the requirements for preallocated hash maps

Crash: WARNING in bpf_check (log)
Repro: C syz .config

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in bpf_check (2)	C			9	843d	842d	12/21	fixed on 2018/12/07 08:24
upstream	WARNING in bpf_check				3	962d	968d	9/21	fixed on 2018/08/07 13:43

Sample crash report:

------------[ cut here ]------------
trace type BPF program uses run-time allocation
WARNING: CPU: 1 PID: 6848 at kernel/bpf/verifier.c:9183 check_map_prog_compatibility kernel/bpf/verifier.c:9183 [inline]
WARNING: CPU: 1 PID: 6848 at kernel/bpf/verifier.c:9183 replace_map_fd_with_map_ptr kernel/bpf/verifier.c:9278 [inline]
WARNING: CPU: 1 PID: 6848 at kernel/bpf/verifier.c:9183 bpf_check+0x7bb2/0xce51 kernel/bpf/verifier.c:11148
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 6848 Comm: syz-executor865 Not tainted 5.9.0-rc1-syzkaller #0
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+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x4a kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:check_map_prog_compatibility kernel/bpf/verifier.c:9183 [inline]
RIP: 0010:replace_map_fd_with_map_ptr kernel/bpf/verifier.c:9278 [inline]
RIP: 0010:bpf_check+0x7bb2/0xce51 kernel/bpf/verifier.c:11148
Code: 0f 86 78 25 00 00 4c 63 b5 e0 fd ff ff e9 88 f6 ff ff e8 11 62 ee ff 48 c7 c7 40 0a 52 88 c6 05 e2 6a 27 09 01 e8 00 73 bf ff <0f> 0b e9 49 a3 ff ff e8 f2 61 ee ff 48 8b 85 c0 fd ff ff 0f b6 00
RSP: 0018:ffffc90001627968 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880a7c62240 RSI: ffffffff815dafc7 RDI: fffff520002c4f1f
RBP: ffffc90001627bd0 R08: 0000000000000001 R09: ffff8880ae7318e7
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809693c000
R13: 0000000000000002 R14: dffffc0000000000 R15: ffffc90000e84048
 bpf_prog_load+0xdaf/0x1b80 kernel/bpf/syscall.c:2199
 __do_sys_bpf+0x20a3/0x4c20 kernel/bpf/syscall.c:4178
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x440549
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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc3859ff38 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440549
RDX: 0000000000000070 RSI: 0000000020fed000 RDI: 0000000000000005
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000072 R11: 0000000000000246 R12: 0000000000401d50
R13: 0000000000401de0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (227):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-root	2020/08/22 18:37	upstream	f873db9a	6436ce4b	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/08/22 15:07	upstream	f873db9a	6436ce4b	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/22 14:44	upstream	f873db9a	6436ce4b	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/05/24 18:11	upstream	caffb99b	bd28eb9d	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/05/24 13:20	upstream	423b8baf	96c92ad3	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/05/23 19:20	upstream	44456565	9682898d	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2021/01/11 09:24	net	f97844f9	2c1f2513	.config	log	report	syz	C
ci-upstream-bpf-kasan-gce	2021/01/11 08:02	bpf	286e95ee	2c1f2513	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/12/06 11:56	net	edd2410b	f12ba0c5	.config	log	report	syz	C
ci-upstream-bpf-kasan-gce	2020/12/06 11:47	bpf	12c8a8ca	f12ba0c5	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2020/08/22 14:35	net	4af7b32f	6436ce4b	.config	log	report	syz	C
ci-upstream-bpf-kasan-gce	2020/08/22 14:35	bpf	4af7b32f	6436ce4b	.config	log	report	syz	C
ci-upstream-bpf-kasan-gce	2020/05/20 04:30	bpf	f85c1598	67fa1f59	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2021/01/11 08:02	net-next	73b7a604	2c1f2513	.config	log	report	syz	C
ci-upstream-bpf-next-kasan-gce	2021/01/11 08:02	bpf-next	e22d7f05	2c1f2513	.config	log	report	syz	C
ci-upstream-bpf-next-kasan-gce	2020/12/06 12:47	bpf-next	34da8721	f12ba0c5	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/12/06 11:57	net-next	00649542	f12ba0c5	.config	log	report	syz	C
ci-upstream-bpf-next-kasan-gce	2020/08/22 14:35	bpf-next	9c0f8cbd	6436ce4b	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/08/22 14:35	net-next	3478f90c	6436ce4b	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2020/05/20 04:23	net-next	2de49925	67fa1f59	.config	log	report	syz	C
ci-upstream-bpf-next-kasan-gce	2020/05/20 04:23	bpf-next	dda18a5c	67fa1f59	.config	log	report	syz	C
ci-upstream-bpf-next-kasan-gce	2020/03/11 18:26	bpf-next	13fac1d8	e7caca8e	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/23 22:27	linux-next	494d311a	cef5ae68	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/05/21 04:13	linux-next	ac935d22	c61086ab	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/05/24 08:18	upstream	423b8baf	96c92ad3	.config	log	report	syz
ci-upstream-kasan-gce-selinux-root	2020/05/24 06:39	upstream	423b8baf	96c92ad3	.config	log	report	syz
ci-upstream-kasan-gce-root	2020/05/23 18:54	upstream	44456565	9682898d	.config	log	report	syz
ci-upstream-kasan-gce-smack-root	2020/05/23 05:55	upstream	051143e1	9682898d	.config	log	report	syz
ci-upstream-kasan-gce-selinux-root	2020/05/20 02:12	upstream	3c9e6656	67fa1f59	.config	log	report	syz
ci-upstream-kasan-gce-selinux-root	2020/05/19 07:01	upstream	45088963	684d3606	.config	log	report	syz
ci-upstream-kasan-gce-smack-root	2020/05/19 05:40	upstream	45088963	684d3606	.config	log	report	syz
ci-upstream-kasan-gce-root	2020/05/19 00:10	upstream	45088963	684d3606	.config	log	report	syz
ci-upstream-kasan-gce-smack-root	2020/05/18 16:58	upstream	b9bbe6ed	684d3606	.config	log	report	syz
ci-upstream-net-this-kasan-gce	2020/05/18 14:09	net	e3f2d557	684d3606	.config	log	report	syz
ci-upstream-net-this-kasan-gce	2020/05/10 13:40	net	99352c79	8742a2b9	.config	log	report	syz
ci-upstream-bpf-kasan-gce	2020/05/09 09:22	bpf	52a90612	e97b06d3	.config	log	report	syz
ci-upstream-net-this-kasan-gce	2020/05/09 09:20	net	cc4de047	e97b06d3	.config	log	report	syz
ci-upstream-bpf-next-kasan-gce	2020/05/18 13:29	bpf-next	96586dd9	684d3606	.config	log	report	syz
ci-upstream-net-kasan-gce	2020/05/18 00:19	net-next	d53b1162	37bccd4e	.config	log	report	syz
ci-upstream-bpf-next-kasan-gce	2020/05/17 22:02	bpf-next	96586dd9	37bccd4e	.config	log	report	syz
ci-upstream-net-kasan-gce	2020/05/10 11:45	net-next	02a5043b	8742a2b9	.config	log	report	syz
ci-upstream-bpf-next-kasan-gce	2020/05/09 09:22	bpf-next	8086fbaf	e97b06d3	.config	log	report	syz
ci-upstream-net-kasan-gce	2020/05/09 09:19	net-next	3712c1c2	e97b06d3	.config	log	report	syz
ci-upstream-linux-next-kasan-gce-root	2020/05/20 14:54	linux-next	ac935d22	1255f02a	.config	log	report	syz
ci-upstream-linux-next-kasan-gce-root	2020/05/18 00:23	linux-next	ac935d22	37bccd4e	.config	log	report	syz
ci-upstream-linux-next-kasan-gce-root	2020/05/17 12:17	linux-next	ac935d22	37bccd4e	.config	log	report	syz
ci-upstream-kasan-gce-selinux-root	2021/03/04 02:49	upstream	f69d02e3	06ed56cd	.config	log	report			info	WARNING in bpf_check
ci-upstream-kasan-gce-smack-root	2021/03/04 00:26	upstream	f69d02e3	06ed56cd	.config	log	report			info	WARNING in bpf_check
ci-upstream-net-this-kasan-gce	2021/03/03 15:58	net	95b39f07	e5b64d68	.config	log	report			info	WARNING in bpf_check
ci-upstream-bpf-kasan-gce	2021/02/25 09:21	bpf	557c223b	fcc6d71b	.config	log	report			info	WARNING in bpf_check
ci-upstream-bpf-kasan-gce	2021/02/02 07:43	bpf	06cc6e5d	e6b95f32	.config	log	report			info	WARNING in bpf_check
ci-upstream-bpf-kasan-gce	2021/01/29 04:27	bpf	150a2732	7df34f59	.config	log	report			info	WARNING in bpf_check
ci-upstream-bpf-next-kasan-gce	2021/01/28 02:34	bpf-next	86ce322d	eefc07f2	.config	log	report			info	WARNING in bpf_check
ci-upstream-kasan-gce-selinux-root	2020/09/28 18:22	upstream	a1b8638b	6bfdbe89	.config	log	report			info
ci-upstream-kasan-gce-root	2020/08/26 23:49	upstream	2ac69819	318430cb	.config	log	report
ci-upstream-bpf-kasan-gce	2021/01/08 17:30	bpf	286e95ee	c104d4a3	.config	log	report			info
ci-upstream-bpf-kasan-gce	2021/01/04 11:58	bpf	04901aab	79264ae3	.config	log	report			info
ci-upstream-net-this-kasan-gce	2021/01/02 17:40	net	4bfc4714	79264ae3	.config	log	report			info
ci-upstream-net-this-kasan-gce	2020/12/26 11:50	net	1f45dc22	821e0b09	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/12/26 06:26	bpf	a61daaf3	821e0b09	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/12/18 18:26	bpf	d467d80d	04201c06	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/12/17 02:45	bpf	1a3449c1	04201c06	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/12/09 18:44	bpf	4e083fdf	c090b4da	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/12/07 09:14	bpf	12c8a8ca	c521566d	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/12/06 01:56	bpf	12c8a8ca	50503117	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/11/30 01:25	bpf	9a44bc94	a0092f9d	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/11/28 00:29	bpf	9a44bc94	486f93ef	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/11/23 11:36	bpf	537cf4e3	0d27f508	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/11/18 13:24	bpf	4363023d	09323409	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/11/17 06:20	bpf	2acc3c1b	1bf9a662	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/11/12 15:41	bpf	f16e6313	77a55c8e	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/10/22 21:46	bpf	18ded910	4e740c00	.config	log	report			info
ci-upstream-bpf-kasan-gce	2020/10/14 01:09	bpf	28802e7c	fc7735a2	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2021/01/09 13:00	bpf-next	e22d7f05	a6c52263	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2021/01/09 03:48	bpf-next	17b75d3f	c104d4a3	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2021/01/07 18:59	bpf-next	482ec343	c104d4a3	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2021/01/07 04:09	bpf-next	482ec343	c104d4a3	.config	log	report			info
ci-upstream-net-kasan-gce	2020/12/22 22:11	net-next	3db1a3fa	04201c06	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/12/20 03:45	bpf-next	3db1a3fa	04201c06	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/12/13 10:43	bpf-next	b4fe9fec	bca53db9	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/12/12 14:26	bpf-next	b4fe9fec	bca53db9	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/12/01 09:06	bpf-next	854055c0	b3a34598	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/11/27 13:35	bpf-next	830382e4	5018c946	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/11/25 07:37	bpf-next	607c543f	1a1f4bd8	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/11/20 03:55	bpf-next	4e99d115	0767f13f	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/11/17 18:34	bpf-next	de91e631	bd2a760b	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/11/16 20:51	bpf-next	024cd2cb	1bf9a662	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/11/13 13:32	bpf-next	c3653879	16fca0c8	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/10/30 22:16	bpf-next	cf83b2d2	a6e3ac3b	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/10/29 23:29	bpf-next	cf83b2d2	a0c7169a	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/10/29 04:36	bpf-next	3cb12d27	f24824d3	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/10/28 12:54	bpf-next	3cb12d27	96e03c1c	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/10/26 15:49	bpf-next	9ff9b0d3	a7aac492	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/10/24 04:26	bpf-next	9ff9b0d3	2bb6666c	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/10/19 20:45	bpf-next	9ff9b0d3	ff4a3345	.config	log	report			info
ci-upstream-bpf-next-kasan-gce	2020/03/11 18:06	bpf-next	13fac1d8	e7caca8e	.config	log	report
ci-upstream-linux-next-kasan-gce-root	2020/09/23 00:39	linux-next	e6499702	3e8f6c27	.config	log	report			info