panic: udp_output: shared udbinfo lock, excl inp lock

Status: fixed on 2019/04/23 14:14
Reported-by: syzbot+1f5c6800e4f99bdb1a48@syzkaller.appspotmail.com
Fix commit: d86ecbe993a7 iFix udp_output() lock inconsistency.
First crash: 2713d, last: 2675d
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd panic: udp_output: shared udbinfo lock, excl inp lock (2) 2 syz 7 2648d 2666d 2/2 fixed on 2019/06/02 04:01

Sample crash report:
login: panic: udp_output: shared udbinfo lock, excl inp lock
cpuid = 1
time = 1555565685
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0021236560
vpanic() at vpanic+0x1e0/frame 0xfffffe00212365c0
panic() at panic+0x43/frame 0xfffffe0021236620
udp_send() at udp_send+0x1377/frame 0xfffffe0021236730
sosend_dgram() at sosend_dgram+0x550/frame 0xfffffe00212367a0
sosend() at sosend+0xc6/frame 0xfffffe0021236810
kern_sendit() at kern_sendit+0x35e/frame 0xfffffe00212368c0
sendit() at sendit+0x226/frame 0xfffffe0021236920
sys_sendmsg() at sys_sendmsg+0x8b/frame 0xfffffe0021236980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe0021236ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0021236ab0
--- syscall (0, FreeBSD ELF64, nosys), rip = 0x41c3aa, rsp = 0x7fffffffeae8, rbp = 0x7fffffffeb40 ---
KDB: enter: panic
[ thread pid 759 tid 100104 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why

Crashes (46):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/18 05:38 freebsd a93250da7537 b0e8efcb console log report syz C ci-freebsd-main
2019/04/02 13:10 freebsd 3fd37b6c9ae1 dfd3394d console log report syz C ci-freebsd-main
2019/03/15 13:48 freebsd 84b9791bcc2c bab43553 console log report syz C ci-freebsd-main
2019/03/15 13:32 freebsd 84b9791bcc2c bab43553 console log report syz C ci-freebsd-main
2019/03/15 13:18 freebsd 84b9791bcc2c bab43553 console log report syz C ci-freebsd-main
2019/03/15 13:09 freebsd 84b9791bcc2c bab43553 console log report syz C ci-freebsd-main
2019/04/22 09:17 freebsd b537b150e374 0a77c33c console log report ci-freebsd-main
2019/04/22 01:51 freebsd 2b63616933be b0e8efcb console log report ci-freebsd-main
2019/04/22 00:46 freebsd 2b63616933be b0e8efcb console log report ci-freebsd-main
2019/04/20 22:43 freebsd ce8f57c27a2c b0e8efcb console log report ci-freebsd-main
2019/04/20 02:52 freebsd dfe617c9908c b0e8efcb console log report ci-freebsd-main
2019/04/17 02:54 freebsd 788090ecdec5 b0e8efcb console log report ci-freebsd-main
2019/04/12 03:25 freebsd 831bf1a1aa1d 8916f5e1 console log report ci-freebsd-main
2019/04/09 10:37 freebsd 5d511432d607 995065ff console log report ci-freebsd-main
2019/04/05 09:25 freebsd 63b6a648739e 6a475fff console log report ci-freebsd-main
2019/04/03 06:56 freebsd bdb31b3b51ea dfd3394d console log report ci-freebsd-main
2019/03/31 23:04 freebsd 06b019117682 ccf2355a console log report ci-freebsd-main
2019/03/29 19:32 freebsd fb7a2f4237ac 934bb8ca console log report ci-freebsd-main
2019/03/29 15:17 freebsd fb7a2f4237ac 934bb8ca console log report ci-freebsd-main
2019/03/28 16:30 freebsd f5682a5ff578 14c58f8d console log report ci-freebsd-main
2019/03/27 01:50 freebsd e27ffc60608b 55684ce1 console log report ci-freebsd-main
2019/03/26 19:45 freebsd e27ffc60608b 55684ce1 console log report ci-freebsd-main
2019/03/26 05:29 freebsd 35c0b5f4dd4f 55684ce1 console log report ci-freebsd-main
2019/03/26 04:55 freebsd 35c0b5f4dd4f 55684ce1 console log report ci-freebsd-main
2019/03/24 22:36 freebsd 59d01ed5c01d 2c86e0a5 console log report ci-freebsd-main
2019/03/24 09:51 freebsd 46b48062555a acbc5b7d console log report ci-freebsd-main
2019/03/24 00:53 freebsd 0e6bf0c478cd a2cef203 console log report ci-freebsd-main
2019/03/23 06:48 freebsd 0d79d351f864 3361bde5 console log report ci-freebsd-main
2019/03/22 16:32 freebsd 8b8564b522e6 028c0951 console log report ci-freebsd-main
2019/03/22 00:44 freebsd 434f008798f2 dce6e62f console log report ci-freebsd-main
2019/03/21 11:56 freebsd f61d24052aac 427ea487 console log report ci-freebsd-main
2019/03/19 12:25 freebsd 5d2bb1696724 e4549234 console log report ci-freebsd-main
2019/03/18 12:51 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 08:18 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 04:19 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 04:14 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 00:25 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/17 11:28 freebsd 8f6fafa8690d ba18afea console log report ci-freebsd-main
2019/03/17 05:44 freebsd 310a121be6b8 bab43553 console log report ci-freebsd-main
2019/03/17 04:15 freebsd 4ccae8165c74 bab43553 console log report ci-freebsd-main
2019/03/16 20:08 freebsd 4ccae8165c74 bab43553 console log report ci-freebsd-main
2019/03/16 05:04 freebsd 4d504c5762fd bab43553 console log report ci-freebsd-main
2019/03/15 13:12 freebsd 84b9791bcc2c bab43553 console log report ci-freebsd-main
2019/03/15 13:09 freebsd 84b9791bcc2c bab43553 console log report ci-freebsd-main
2019/03/15 13:05 freebsd 84b9791bcc2c bab43553 console log report ci-freebsd-main
2019/03/15 12:53 freebsd 84b9791bcc2c bab43553 console log report ci-freebsd-main
* Struck through repros no longer work on HEAD.