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panic: vm_page_unhold: hold count < 0!!!

Status: closed as dup on 2019/07/02 14:54
Reported-by: syzbot+7a0cbdf5168eb06073df@syzkaller.appspotmail.com
First crash: 1866d, last: 1775d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
Fatal trap 12: page fault in vm_page_unhold_pages C 1169 1770d 1864d

Sample crash report:
panic: vm_page_unhold: hold count < 0!!!
cpuid = 1
time = 1557828689
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00212d16d0
vpanic() at vpanic+0x1e0/frame 0xfffffe00212d1730
panic() at panic+0x43/frame 0xfffffe00212d1790
vm_page_unhold_pages() at vm_page_unhold_pages+0x1e3/frame 0xfffffe00212d17e0
pipe_write() at pipe_write+0x16d8/frame 0xfffffe00212d18b0
dofilewrite() at dofilewrite+0xfd/frame 0xfffffe00212d1910
kern_writev() at kern_writev+0x66/frame 0xfffffe00212d1950
sys_writev() at sys_writev+0x50/frame 0xfffffe00212d1980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe00212d1ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00212d1ab0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x41309a, rsp = 0x7fffdffdcf38, rbp = 0x3 ---
KDB: enter: panic
[ thread pid 4463 tid 100795 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why

Crashes (114):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/05/14 10:37 freebsd 29adbefa4782 ada3c44c console log report syz ci-freebsd-main
2019/03/26 07:11 freebsd 35c0b5f4dd4f 55684ce1 console log report syz ci-freebsd-main
2019/03/24 18:36 freebsd 46b48062555a acbc5b7d console log report syz ci-freebsd-main
2019/03/20 20:05 freebsd 3d80c6291b89 142c38ee console log report syz ci-freebsd-main
2019/03/20 02:44 freebsd 90d8cba8606b 2458c1c6 console log report syz ci-freebsd-main
2019/03/20 01:32 freebsd 90d8cba8606b 2458c1c6 console log report syz ci-freebsd-main
2019/03/18 01:49 freebsd 8b17fbc25c73 f8757044 console log report syz ci-freebsd-main
2019/06/17 00:11 freebsd e79b1eca2af2 442206d7 console log report ci-freebsd-main
2019/06/13 16:50 freebsd 13a313ede7b5 d25bb7ad console log report ci-freebsd-main
2019/06/13 11:28 freebsd 48cf3d0825d2 3f4e812b console log report ci-freebsd-main
2019/06/12 12:27 freebsd 1f3b25e11df9 794a1ad7 console log report ci-freebsd-main
2019/06/12 03:45 freebsd f47bc88408ff ea2f4006 console log report ci-freebsd-main
2019/06/11 23:58 freebsd f47bc88408ff ea2f4006 console log report ci-freebsd-main
2019/06/11 20:30 freebsd 300397edf326 5b5826d0 console log report ci-freebsd-main
2019/06/10 00:11 freebsd af823c22958c 0159583c console log report ci-freebsd-main
2019/06/09 22:00 freebsd af823c22958c 0159583c console log report ci-freebsd-main
2019/06/09 18:07 freebsd af823c22958c 0159583c console log report ci-freebsd-main
2019/06/09 06:00 freebsd bc4e02c8c38e 0159583c console log report ci-freebsd-main
2019/06/09 04:28 freebsd bc4e02c8c38e 0159583c console log report ci-freebsd-main
2019/06/08 23:52 freebsd bc4e02c8c38e 0159583c console log report ci-freebsd-main
2019/06/08 15:33 freebsd a8fa0b8b8fd2 0159583c console log report ci-freebsd-main
2019/06/07 22:28 freebsd 2374f8977455 cf9c3a50 console log report ci-freebsd-main
2019/06/07 14:46 freebsd d539480f53f3 b004e95a console log report ci-freebsd-main
2019/06/07 05:34 freebsd d539480f53f3 698773cb console log report ci-freebsd-main
2019/06/07 03:17 freebsd f6eb4393c0bd 698773cb console log report ci-freebsd-main
2019/06/06 00:40 freebsd ae1a873a0d0b bfb4a51e console log report ci-freebsd-main
2019/06/05 18:11 freebsd ae1a873a0d0b bfb4a51e console log report ci-freebsd-main
2019/06/05 16:31 freebsd ae1a873a0d0b bfb4a51e console log report ci-freebsd-main
2019/06/05 13:23 freebsd ae1a873a0d0b bfb4a51e console log report ci-freebsd-main
2019/06/05 06:42 freebsd 54eb1c14c26e bfb4a51e console log report ci-freebsd-main
2019/06/04 19:46 freebsd 40124d2a0531 e41a20c5 console log report ci-freebsd-main
2019/06/04 17:25 freebsd 40124d2a0531 e41a20c5 console log report ci-freebsd-main
2019/06/04 14:43 freebsd 40124d2a0531 e41a20c5 console log report ci-freebsd-main
2019/06/04 03:49 freebsd 2b3f398e4e92 ce07a7ae console log report ci-freebsd-main
2019/06/03 11:43 freebsd c7cdb4a80779 63bf051f console log report ci-freebsd-main
2019/05/22 06:54 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/21 23:57 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/21 22:28 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/21 16:25 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/21 00:59 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/20 03:56 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/19 20:20 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/19 17:34 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/19 14:50 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/19 11:37 freebsd e2abb7b27ea6 40046286 console log report ci-freebsd-main
2019/05/17 15:26 freebsd 85eaade994ec 2755003a console log report ci-freebsd-main
2019/05/16 03:49 freebsd dfdde018eb57 27b25dbc console log report ci-freebsd-main
2019/05/15 18:35 freebsd dfdde018eb57 27b25dbc console log report ci-freebsd-main
2019/05/15 14:50 freebsd 5834f8720468 bd4e3ac7 console log report ci-freebsd-main
2019/05/14 02:55 freebsd 094736f08fd5 7c305b44 console log report ci-freebsd-main
2019/05/11 17:54 freebsd 24c307c3c0ca 0637a7f0 console log report ci-freebsd-main
2019/03/18 01:09 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
* Struck through repros no longer work on HEAD.