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kernel panic: kroc-ful Page Fault in thPe Kernel at ADDR!buf 4096r,S STAT_FIX_LENT_AT_FIX_LEN_9P 49 n the Kernel at ADDR

Status: closed as invalid on 2018/07/19 20:24
Reported-by: syzbot+b6dc1dbc7daf58c54794@syzkaller.appspotmail.com
First crash: 2318d, last: 2318d

Sample crash report:
kernel panic at kern/arch/x86/trap.c:309, from core 1: kroc-ful Page Fault in thPe Kernel at 0x000000000000001b!buf 4096r,S STAT_FIX_LENT_AT_FIX_LEN_9P 49 n the Kernel at 0x000000000000001b!9
PH0xffWT16SZ 2, GBIT16(buf) 0 f0000cad30 on core BIT16SZ 1
2  rax  0x0000000000000000
0  rbfffx  0xffff8000063ebba0
8  rcx  0xfffffff0000caea0
f  rdx  0xfffffff0000cad6c
f  0000cae38rThis is bad!
s is bad!
nAbuT_FIf 40X9_6, LSEN_9PT  rsi  0x0000000000000000
0ff0000caea0
 49  IT16SZ 2, GBIT16(buf) 0 
B  r8   0x0000000000000001
 r9    0xffffffff r9   0c87xffffffffc8790880
9 00 r10  0x0000000000000030
3  r11  0xffff800003a9e6a0
0 his is bad!
80000217aac0
T  r13  0x00000000200006c0
   r14  0x0000000000000073
r  r15  0x0000000000000021
1  trap 0x0000000e Page Fault
a  gsbs 0xffffffffc8667c40
s  fsbs 0x0000000000000000
   err  00x------x------00000000
  rip  0xffffffffc20583b4
  cs   0x------------0008
  flag 0x0000000000010246
  rsp  0xfffffff0000cadf8
  ss   0x------------0010
Backtrace of kernel context on Core 1:
#01 [<0xffffffffc20583b4>] in sys_readlink at src/syscall.c:2037
#02 [<0xffffffffc20593c9>] in syscall at src/syscall.c:2528
#03 [<0xffffffffc2059584>] in run_local_syscall at src/syscall.c:2563
#04 [<0xffffffffc2059ab9>] in prep_syscalls at src/syscall.c:2583
#05 [<0xffffffffc20ab29a>] in sysenter_callwrapper at arch/x86/trap.c:851
23:35:54 executing program 4:
r0 = openat$proc_self_fpregs(0xffffffffffffff9c, &(0x7f0000000000)='/proc/self/fpregs\x00', 0x12, 0x1, 0x0)
tcgetattr(r0, &(0x7f0000000040))
23:35:54 executing program 5:
openat$dev_kmesg(0xffffffffffffff9c, &(0x7f0000000000)='/dev/kmesg\x00', 0xb, 0x1, 0x0)
mmap(&(0x7f0000ffe000/0x2000)=nil, 0x2000, 0x1000000, 0x4011, 0xffffffffffffff9c, 0x0)

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/07/18 23:36 akaros bf9a9ba0d6af 49f35839 .config console log report ci-akaros-main
* Struck through repros no longer work on HEAD.