WARNING in _

WARNING in __vunmap
Status: upstream: reported syz repro on 2019/02/16 07:01
Reported-by: syzbot+5ec9bb042ddfe9644773@syzkaller.appspotmail.com
First crash: 486d, last: 19h37m
Bisection: error (bisect log)
Tree: upstream

Sample crash report:

------------[ cut here ]------------
Trying to vfree() nonexistent vm area (00000000dddfa71b)
WARNING: CPU: 0 PID: 10463 at mm/vmalloc.c:2235 __vunmap+0x148/0xa20 mm/vmalloc.c:2234
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 10463 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #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+0x1d8/0x2f8 lib/dump_stack.c:113
 panic+0x25c/0x799 kernel/panic.c:219
 __warn+0x22f/0x230 kernel/panic.c:576
 report_bug+0x190/0x290 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0xd7/0x440 arch/x86/kernel/traps.c:272
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:__vunmap+0x148/0xa20 mm/vmalloc.c:2234
Code: 0c e8 8c 36 d0 ff eb 24 e8 85 36 d0 ff 48 c7 c7 a8 f5 8f 88 e8 69 9b d8 05 48 c7 c7 e5 5c 3e 88 4c 89 f6 31 c0 e8 68 18 a3 ff <0f> 0b 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 a8 f5
RSP: 0018:ffff8880a81d75b8 EFLAGS: 00010246
RAX: 4324ba28a2c9f400 RBX: 0000000000000000 RCX: ffff8880a48ce080
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff8880a81d7640 R08: ffffffff815cfa54 R09: ffffed1015d46088
R10: ffffed1015d46088 R11: 0000000000000000 R12: ffff88808a93f708
R13: dffffc0000000000 R14: ffffc900080f7000 R15: ffffc90008108000
 __vfree mm/vmalloc.c:2299 [inline]
 vfree+0x85/0x130 mm/vmalloc.c:2329
 ipcomp_free_scratches net/xfrm/xfrm_ipcomp.c:212 [inline]
 ipcomp_free_data+0x12a/0x1d0 net/xfrm/xfrm_ipcomp.c:321
 ipcomp_init_state+0x7bf/0x8b0 net/xfrm/xfrm_ipcomp.c:373
 ipcomp6_init_state+0xb7/0x630 net/ipv6/ipcomp6.c:153
 __xfrm_init_state+0x7d0/0xbf0 net/xfrm/xfrm_state.c:2493
 xfrm_state_construct net/xfrm/xfrm_user.c:626 [inline]
 xfrm_add_sa+0x223f/0x38e0 net/xfrm/xfrm_user.c:683
 xfrm_user_rcv_msg+0x3e6/0x650 net/xfrm/xfrm_user.c:2676
 netlink_rcv_skb+0x19e/0x3d0 net/netlink/af_netlink.c:2477
 xfrm_netlink_rcv+0x74/0x90 net/xfrm/xfrm_user.c:2684
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x787/0x900 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x993/0xc50 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg net/socket.c:657 [inline]
 ___sys_sendmsg+0x60d/0x910 net/socket.c:2311
 __sys_sendmsg net/socket.c:2356 [inline]
 __do_sys_sendmsg net/socket.c:2365 [inline]
 __se_sys_sendmsg net/socket.c:2363 [inline]
 __x64_sys_sendmsg+0x17c/0x200 net/socket.c:2363
 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4598e9
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f4880699c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9
RDX: 0000000000000000 RSI: 0000000020000840 RDI: 0000000000000003
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f488069a6d4
R13: 00000000004c7812 R14: 00000000004dd0b0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..

All crashes (27):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	Maintainers
ci-upstream-kasan-gce-smack-root	2019/09/08 07:04	upstream	b3a9964c	a60cb4cd	.config	log	report	syz	davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-root	2019/09/12 22:20	upstream	ad32b480	0b7672ee	.config	log	report	syz	davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2019/09/12 10:40	upstream	3120b9a6	f4e53c10	.config	log	report	syz	davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-selinux-root	2019/09/11 09:45	upstream	3120b9a6	a60cb4cd	.config	log	report	syz	davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-net-this-kasan-gce	2019/09/11 10:13	net	f794dc23	a60cb4cd	.config	log	report	syz	davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-root	2018/05/22 18:50	upstream	a048a07d	f48c20b8	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2019/08/22 09:45	upstream	bb7ba806	984250d5	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2019/08/05 19:31	upstream	e21a712a	6affd8e8	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-selinux-root	2019/08/02 23:17	upstream	97b00aff	6affd8e8	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2019/07/27 11:54	upstream	3ea54d9b	c85e1c5b	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2019/07/21 12:28	upstream	abdfd52a	1656845f	.config	log	report
ci-upstream-kasan-gce-smack-root	2019/05/03 08:37	upstream	ea986679	1bfa09b9	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2019/04/17 03:14	upstream	444fe991	b0e8efcb	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2019/03/24 06:31	upstream	a5ed1e96	a2cef203	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-smack-root	2019/02/15 06:36	upstream	23e93c9b	76dd003f	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-smack-root	2019/01/30 01:17	upstream	4aa9fc2a	aa432daf	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-smack-root	2018/12/13 04:13	upstream	f5d58277	02613a41	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-selinux-root	2018/11/26 07:46	upstream	d6d460b8	3d3ec907	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce	2018/11/10 11:52	upstream	aa4330e1	f9815aaf	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-root	2018/10/01 12:59	upstream	17b57b18	48a50c6b	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-386	2019/06/01 01:52	upstream	3ab4436f	53c81ea5	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-kasan-gce-386	2018/12/10 07:34	upstream	0844895a	96cc4c50	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-net-this-kasan-gce	2018/09/26 00:27	net	846e8dd4	b7e11289	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-net-this-kasan-gce	2018/07/21 21:06	net	c1f897ce	8cc079c3	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-net-kasan-gce	2019/09/20 07:43	net-next	b41dae06	4d3ae0b7	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-net-kasan-gce	2018/11/24 09:40	net-next	aea0a897	ecc7c870	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com
ci-upstream-net-kasan-gce	2018/08/26 00:02	net-next	2ad0d526	76e7c3df	.config	log	report		davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com