syzbot


WARNING in dev_change_net_namespace

Status: auto-closed as invalid on 2020/10/08 22:13
Reported-by: syzbot+396ede637da4165a137e@syzkaller.appspotmail.com
First crash: 748d, last: 748d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in dev_change_net_namespace C error 10 229d 898d 0/1 upstream: reported C repro on 2020/01/13 08:39
upstream WARNING in dev_change_net_namespace syz done done 8 220d 869d 22/22 fixed on 2022/05/20 00:27

Sample crash report:
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000a19 R14: 00000000004ccfd8 R15: 00007fa343dca6d4
------------[ cut here ]------------
WARNING: CPU: 0 PID: 30663 at net/core/dev.c:8405 dev_change_net_namespace net/core/dev.c:8405 [inline]
WARNING: CPU: 0 PID: 30663 at net/core/dev.c:8405 dev_change_net_namespace+0x83e/0x9f0 net/core/dev.c:8322
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 30663 Comm: syz-executor.0 Not tainted 4.14.183-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x30 kernel/panic.c:547
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:dev_change_net_namespace net/core/dev.c:8405 [inline]
RIP: 0010:dev_change_net_namespace+0x83e/0x9f0 net/core/dev.c:8322
RSP: 0018:ffff888211d27160 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888096d1c440 RCX: ffffc90007278000
RDX: 0000000000040000 RSI: ffffffff84fe1ace RDI: 0000000000000282
RBP: ffff888096d1c380 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888096d1c428
R13: dffffc0000000000 R14: ffff888096d1c430 R15: ffffffff884d71c0
 do_setlink+0xc0b/0x2d30 net/core/rtnetlink.c:1997
 rtnl_newlink+0x11bb/0x1720 net/core/rtnetlink.c:2660
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4315
 netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433
 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313
 netlink_sendmsg+0x64a/0xbb0 net/netlink/af_netlink.c:1878
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45ca69
RSP: 002b:00007fa343dc9c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000501700 RCX: 000000000045ca69
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000a19 R14: 00000000004ccfd8 R15: 00007fa343dca6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/06/10 22:12 linux-4.14.y c6db52a88798 5caaad3a .config log report