Messages in this thread | | | From | Dmitry Vyukov <> | Date | Tue, 24 Oct 2017 17:02:29 +0200 | Subject | Re: general protection fault in __list_del_entry_valid |
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On Tue, Oct 24, 2017 at 4:59 PM, syzbot <bot+b3b21cb3f2c95ba434f66810d52abd04c99b877e@syzkaller.appspotmail.com> wrote: > Hello, > > syzkaller hit the following crash on > aa69ff9e9c32db8aa84835baffea1b70c39e5112 > git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > C reproducer is attached > syzkaller reproducer is attached. See https://goo.gl/kgGztJ > for information about syzkaller reproducers
This also happened on more recent commits, including net-next 33ad61d0f799656e8987e9c80e6e15151bb857f3 (Oct 20), with similar signature:
general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 4.14.0-rc5+ #89 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events netlink_sock_destruct_work task: ffff8801d9f94480 task.stack: ffff8801d9fa0000 RIP: 0010:__list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 RSP: 0018:ffff8801d9fa70b8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801cb186b60 RDI: ffff8801cb186b68 RBP: ffff8801d9fa70d0 R08: ffffffff84248f02 R09: 0000000000000000 R10: ffff8801d9fa6f98 R11: ffff8801ca127a10 R12: 0000000000000000 R13: ffff8801d9fa7198 R14: ffff8801ca1279f8 R15: ffff8801cb186b68 FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000001c17a4000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:116 [inline] list_del include/linux/list.h:124 [inline] xfrm_policy_walk_done+0xfa/0x310 net/xfrm/xfrm_policy.c:1048 xfrm_dump_policy_done+0x73/0xa0 net/xfrm/xfrm_user.c:1699 netlink_sock_destruct+0xfa/0x3c0 net/netlink/af_netlink.c:362 __sk_destruct+0xfd/0x910 net/core/sock.c:1560 sk_destruct+0x47/0x80 net/core/sock.c:1595 __sk_free+0x57/0x230 net/core/sock.c:1603 sk_free+0x2a/0x40 net/core/sock.c:1614 netlink_sock_destruct_work+0x19/0x20 net/netlink/af_netlink.c:384 process_one_work+0xbf0/0x1bc0 kernel/workqueue.c:2119 worker_thread+0x223/0x1860 kernel/workqueue.c:2253 kthread+0x35e/0x430 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 RIP: __list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 RSP: ffff8801d9fa70b8 ---[ end trace 09c8fe297bb23e1f ]---
> SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2922 comm=syzkaller860091 > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2923 comm=syzkaller860091 > general protection fault: 0000 [#1] SMP KASAN > Dumping ftrace buffer: > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2924 comm=syzkaller860091 > (ftrace buffer empty) > Modules linked in: > CPU: 0 PID: 23 Comm: kworker/0:1 Not tainted 4.13.0-rc4+ #2 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Workqueue: events netlink_sock_destruct_work > task: ffff8801da882600 task.stack: ffff8801da878000 > RIP: 0010:__list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 > RSP: 0018:ffff8801da87f0b8 EFLAGS: 00010246 > RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff8801d198f1a0 RDI: ffff8801d198f1a8 > RBP: ffff8801da87f0d0 R08: ffffffff8630d808 R09: ffff8801da87ea18 > R10: ffff8801da87ef98 R11: 1ffff1003b51071b R12: 0000000000000000 > R13: ffff8801da87f198 R14: ffffffff855864b8 R15: ffff8801d198f1a8 > FS: 0000000000000000(0000) GS:ffff8801dc000000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007ffe339a7b84 CR3: 00000001d0304000 CR4: 00000000001406f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > __list_del_entry include/linux/list.h:116 [inline] > list_del include/linux/list.h:124 [inline] > xfrm_policy_walk_done+0xfa/0x310 net/xfrm/xfrm_policy.c:1049 > xfrm_dump_policy_done+0x73/0xa0 net/xfrm/xfrm_user.c:1690 > netlink_sock_destruct+0xfa/0x3c0 net/netlink/af_netlink.c:362 > __sk_destruct+0xfd/0x910 net/core/sock.c:1570 > sk_destruct+0x47/0x80 net/core/sock.c:1605 > __sk_free+0x57/0x230 net/core/sock.c:1613 > sk_free+0x2a/0x40 net/core/sock.c:1624 > netlink_sock_destruct_work+0x19/0x20 net/netlink/af_netlink.c:384 > process_one_work+0xbf3/0x1bc0 kernel/workqueue.c:2097 > worker_thread+0x223/0x1860 kernel/workqueue.c:2231 > kthread+0x35e/0x430 kernel/kthread.c:231 > ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:425 > Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 > da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 > 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 > RIP: __list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 RSP: > ffff8801da87f0b8 > ---[ end trace d2378690210613a6 ]--- > Kernel panic - not syncing: Fatal exception in interrupt > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2925 comm=syzkaller860091 > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2926 comm=syzkaller860091 > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2927 comm=syzkaller860091 > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2928 comm=syzkaller860091 > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2929 comm=syzkaller860091 > SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 > sclass=netlink_xfrm_socket pig=2930 comm=syzkaller860091 > Dumping ftrace buffer: > (ftrace buffer empty) > Kernel Offset: disabled > Rebooting in 86400 seconds.. > > > --- > This bug is generated by a dumb bot. It may contain errors. > See https://goo.gl/tpsmEJ for details. > Direct all questions to syzkaller@googlegroups.com. > > syzbot will keep track of this bug report. > Once a fix for this bug is committed, please reply to this email with: > #syz fix: exact-commit-title > To mark this as a duplicate of another syzbot report, please reply with: > #syz dup: exact-subject-of-another-report > If it's a one-off invalid bug report, please reply with: > #syz invalid > Note: if the crash happens again, it will cause creation of a new bug > report. > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscribe@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/f403043cb57c0ee302055c4c2e3c%40google.com. > For more options, visit https://groups.google.com/d/optout.
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