syzbot


Fatal trap 12: page fault while in kernel mode

Status: closed as dup on 2019/03/22 15:29
Reported-by: syzbot+80336cab6a7cfe0c3932@syzkaller.appspotmail.com
First crash: 1957d, last: 1953d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
Fatal trap 12: page fault in inp_freemoptions C 11 1899d 1953d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
freebsd Fatal trap 12: page fault while in kernel mode (3) C 140 1040d 1646d 2/2 fixed on 2021/09/18 04:00
freebsd Fatal trap 12: page fault while in kernel mode (2) 2 1756d 1873d 0/2 auto-closed as invalid on 2019/12/31 21:21

Sample crash report:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0x30
fault code		= supervisor read data  , page not present
instruction pointer	= 0x20:0xffffffff8156dbda
stack pointer	        = 0x28:0xfffffe00212187a0
frame pointer	        = 0x28:0xfffffe00212187e0
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 759 (syz-executor3299822)
trap number		= 12
panic: page fault
cpuid = 1
time = 1552900717
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0021218400
vpanic() at vpanic+0x1e0/frame 0xfffffe0021218460
panic() at panic+0x43/frame 0xfffffe00212184c0
trap_fatal() at trap_fatal+0x4c6/frame 0xfffffe0021218540
trap_pfault() at trap_pfault+0x9f/frame 0xfffffe00212185b0
trap() at trap+0x44d/frame 0xfffffe00212186d0
calltrap() at calltrap+0x8/frame 0xfffffe00212186d0
--- trap 0xc, rip = 0xffffffff8156dbda, rsp = 0xfffffe00212187a0, rbp = 0xfffffe00212187e0 ---
vm_page_unhold_pages() at vm_page_unhold_pages+0x5a/frame 0xfffffe00212187e0
pipe_write() at pipe_write+0x16d8/frame 0xfffffe00212188b0
dofilewrite() at dofilewrite+0xfd/frame 0xfffffe0021218910
kern_writev() at kern_writev+0x66/frame 0xfffffe0021218950
sys_writev() at sys_writev+0x50/frame 0xfffffe0021218980
amd64_syscall() at amd64_syscall+0x436/frame 0xfffffe0021218ab0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0021218ab0
--- syscall (0, FreeBSD ELF64, nosys), rip = 0x4575ba, rsp = 0x7fffdfffdf88, rbp = 0x6b5ac8 ---
KDB: enter: panic
[ thread pid 759 tid 100098 ]
Stopped at      kdb_enter+0x6a: movq    $0,kdb_why

Crashes (103):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/03/18 09:21 freebsd 8b17fbc25c73 f8757044 console log report syz C ci-freebsd-main
2019/03/15 15:08 freebsd 84b9791bcc2c bab43553 console log report syz C ci-freebsd-main
2019/03/15 14:48 freebsd 84b9791bcc2c bab43553 console log report syz C ci-freebsd-main
2019/03/19 17:04 freebsd 5d2bb1696724 e4549234 console log report syz ci-freebsd-main
2019/03/18 07:02 freebsd 8b17fbc25c73 f8757044 console log report syz ci-freebsd-main
2019/03/19 22:46 freebsd 5d2bb1696724 e4549234 console log report ci-freebsd-main
2019/03/19 21:07 freebsd 5d2bb1696724 e4549234 console log report ci-freebsd-main
2019/03/19 19:46 freebsd 5d2bb1696724 e4549234 console log report ci-freebsd-main
2019/03/19 18:25 freebsd 5d2bb1696724 e4549234 console log report ci-freebsd-main
2019/03/19 14:45 freebsd 5d2bb1696724 e4549234 console log report ci-freebsd-main
2019/03/19 12:37 freebsd 5d2bb1696724 e4549234 console log report ci-freebsd-main
2019/03/19 09:31 freebsd 8bfcb839fd2f 46264c32 console log report ci-freebsd-main
2019/03/19 07:41 freebsd 8bfcb839fd2f 46264c32 console log report ci-freebsd-main
2019/03/19 06:31 freebsd 8bfcb839fd2f 46264c32 console log report ci-freebsd-main
2019/03/19 05:14 freebsd 8bfcb839fd2f 46264c32 console log report ci-freebsd-main
2019/03/19 03:23 freebsd 8bfcb839fd2f 46264c32 console log report ci-freebsd-main
2019/03/18 22:35 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 21:04 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 19:54 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 18:19 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 16:42 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 15:02 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 13:55 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 13:42 freebsd b24a98cb7ea8 4656beca console log report ci-freebsd-main
2019/03/18 10:37 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 08:34 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 06:04 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 06:00 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 05:47 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 05:37 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 05:28 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 05:11 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 04:56 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 04:55 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 04:28 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 04:27 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 04:18 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 03:25 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 03:18 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 03:16 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 03:15 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 03:12 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 03:04 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 03:04 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
2019/03/18 02:51 freebsd 8b17fbc25c73 f8757044 console log report ci-freebsd-main
* Struck through repros no longer work on HEAD.