Opened 14 years ago
Last modified 13 years ago
#9651 closed defect
Solaris guest kernel panic with ctf_modopen — at Initial Version
| Reported by: | peter.dennis@oracle.com | Owned by: | |
|---|---|---|---|
| Component: | other | Version: | VirtualBox 4.1.2 |
| Keywords: | Cc: | ||
| Guest type: | Solaris | Host type: | other |
Description
Solaris guest debug kernel panic:
panic[cpu0]/thread=ffffff00ad234100: assertion failed: MUTEX_HELD(&mod_lock), file: ../../common/ctf/ctf_mod.c, line:
157
$C
ffffff00029fe5a0 vpanic() ffffff00029fe5e0 assfail+0x89(fffffffff8232dc0, fffffffff8232de8, 9d) ffffff00029fe6e0 ctf_modopen+0x19a(fffffffffbcb8a58, ffffff00029fe6fc) ffffff00029fe710 vbi_init+0x131() ffffff00029fe730 rtR0InitNative+0x15() ffffff00029fe760 RTR0Init+0x28() ffffff00029fe790 _init+0x13() ffffff00029fe7c0 modinstall+0x11e(ffffff00ae42fa10) ffffff00029fe810 mod_hold_installed_mod+0x84(ffffff00abf6d968, 1, 0, ffffff00029fe82c) ffffff00029fe870 modrload+0xd1(fffffffffbfe8640, ffffff00a5d8c260, 0) ffffff00029fe890 modload+0x18(fffffffffbfe8640, ffffff00a5d8c260) ffffff00029fe8d0 mod_hold_dev_by_major+0x94(11b) ffffff00029fe8f0 ndi_hold_driver+0x2a(ffffff00a6196008) ffffff00029fe920 probe_node+0x3b(ffffff00a6196008) ffffff00029fe970 i_ndi_config_node+0x136(ffffff00a6196008, 6, 0) ffffff00029fe9a0 i_ddi_attachchild+0x6e(ffffff00a6196008) ffffff00029fe9e0 devi_attach_node+0x10e(ffffff00a6196008, 4000) ffffff00029fea40 config_immediate_children+0xf5(ffffff00a6197748, 4000, ffffffff) ffffff00029fea90 devi_config_common+0xa6(ffffff00a6197748, 4000, ffffffff) ffffff00029fead0 ndi_devi_config+0x3a(ffffff00a6197748, 4000) ffffff00029fec20 dv_filldir+0x7a(ffffff00aa9e5bc0) ffffff00029fed80 devfs_readdir+0x113(ffffff00ab3a6400, ffffff00029fee40, ffffff00a70f9008, ffffff00029fee2c, 0, 0) ffffff00029fee10 fop_readdir+0xe8(ffffff00ab3a6400, ffffff00029fee40, ffffff00a70f9008, ffffff00029fee2c, 0, 0) ffffff00029feeb0 getdents64+0xd5(3, fede4000, 2000) ffffff00029fef00 _sys_sysenter_post_swapgs+0x237()
ffffff00abf6d968/s
0xffffff00abf6d968: drv/vboxguest
The problem is that the vboxguest driver is calling the ctf_modopen without the mod_lock mutex being held. This is a problem in the source code of
root/trunk/src/VBox/Runtime/r0drv/solaris/vbi/i86pc/os/vbi.c
It does a mod_hold_by_name() which sets the mod_busy but does not hold the mutex: mod_lock
