syzbot
WARNING in wiphy_register (3)
Status:
fixed on 2019/03/06 07:43
Subsystems:
wireless
[Documentation on labels]
Reported-by: syzbot+73fd8b0aa60c67fa4b60@syzkaller.appspotmail.com
Fix commit:
9c5d3afac436
mac80211_hwsim: check that n_limits makes sense
First crash: 2774d, last: 2739d
Sample crash report:
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
8021q: adding VLAN 0 to HW filter on device batadv0
8021q: adding VLAN 0 to HW filter on device batadv0
netlink: 'syz-executor3': attribute type 23 has an invalid length.
WARNING: CPU: 0 PID: 7954 at net/wireless/core.c:581 wiphy_verify_combinations net/wireless/core.c:581 [inline]
WARNING: CPU: 0 PID: 7954 at net/wireless/core.c:581 wiphy_register+0x1432/0x2760 net/wireless/core.c:784
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 7954 Comm: syz-executor3 Not tainted 4.20.0+ #2
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+0x1db/0x2d0 lib/dump_stack.c:113
panic+0x2cb/0x589 kernel/panic.c:189
__warn.cold+0x20/0x4b kernel/panic.c:544
report_bug+0x263/0x2b0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:wiphy_verify_combinations net/wireless/core.c:581 [inline]
RIP: 0010:wiphy_register+0x1432/0x2760 net/wireless/core.c:784
Code: ff e8 42 6d 1d fa 0f 0b 41 bc ea ff ff ff e9 5e f0 ff ff e8 30 6d 1d fa 0f 0b 41 bc ea ff ff ff e9 4c f0 ff ff e8 1e 6d 1d fa <0f> 0b 41 bc ea ff ff ff e9 3a f0 ff ff e8 0c 6d 1d fa 0f 0b 41 bc
RSP: 0018:ffff88809d056ef0 EFLAGS: 00010293
RAX: ffff888086584040 RBX: 0000000000000000 RCX: ffffffff8763cc2a
RDX: 0000000000000000 RSI: ffffffff8763d182 RDI: 0000000000000001
RBP: ffff88809d057048 R08: ffff888086584040 R09: ffffed1013b5f1c1
kobject: 'loop5' (00000000293328f9): kobject_uevent_env
R10: ffffed1013b5f1c0 R11: ffff88809daf8e05 R12: 000000000000002f
R13: ffffffff88f47000 R14: 0000000000000800 R15: ffff88809dafb874
kobject: 'loop5' (00000000293328f9): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000254d85b2): kobject_uevent_env
ieee80211_register_hw+0x15e2/0x3f30 net/mac80211/main.c:1109
kobject: 'loop4' (00000000254d85b2): fill_kobj_path: path = '/devices/virtual/block/loop4'
mac80211_hwsim_new_radio+0x2018/0x36b0 drivers/net/wireless/mac80211_hwsim.c:2921
kobject: 'loop2' (00000000c70189d5): kobject_uevent_env
hwsim_new_radio_nl+0xca6/0x1430 drivers/net/wireless/mac80211_hwsim.c:3469
genl_family_rcv_msg+0x80d/0x11a0 net/netlink/genetlink.c:601
kobject: 'loop2' (00000000c70189d5): fill_kobj_path: path = '/devices/virtual/block/loop2'
genl_rcv_msg+0xca/0x16c net/netlink/genetlink.c:626
netlink_rcv_skb+0x17d/0x410 net/netlink/af_netlink.c:2477
kobject: 'loop0' (000000003a76fd6a): kobject_uevent_env
genl_rcv+0x29/0x40 net/netlink/genetlink.c:637
netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
netlink_unicast+0x574/0x770 net/netlink/af_netlink.c:1336
netlink_sendmsg+0xa05/0xf90 net/netlink/af_netlink.c:1917
kobject: 'loop0' (000000003a76fd6a): fill_kobj_path: path = '/devices/virtual/block/loop0'
sock_sendmsg_nosec net/socket.c:621 [inline]
sock_sendmsg+0xdd/0x130 net/socket.c:631
___sys_sendmsg+0x7ec/0x910 net/socket.c:2116
__sys_sendmsg+0x112/0x270 net/socket.c:2154
__do_sys_sendmsg net/socket.c:2163 [inline]
__se_sys_sendmsg net/socket.c:2161 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161
do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f41bf1b7c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f41bf1b86d4
R13: 00000000004c51d3 R14: 00000000004d8a88 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..
Struck through repros no longer work on HEAD.