Good:
(gdb) p *((virSecurityStackDataPtr)(((virQEMUDriverPtr)conn->privateData
)->securityManager->privateData))->itemsHead->securityManager
$7 = {parent = {parent = {parent_instance = {g_type_instance = {g_class =
0x7f430805ddf0}, ref_count = 1, qdata = 0x0}}, lock = {lock = {__data = {__lock
= 0, __count = 0, __owner = 0,
__nusers = 0, __kind = 512, __spins = 0, __elision = 0, __list =
{__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 17 times>, "\002",
'\000' <repeats 21 times>,
__align = 0}}}, drv = 0x7f435aadfae0 <virAppArmorSecurityDriver>, flags
= 10, virtDriver = 0x7f43541e71b2 "QEMU", privateData = 0x0}
(gdb) p *((virSecurityStackDataPtr)(((virQEMUDriverPtr)conn->privateData
)->securityManager->privateData))->itemsHead->next->securityManager
$8 = {parent = {parent = {parent_instance = {g_type_instance = {g_class =
0x7f430805ddf0}, ref_count = 1, qdata = 0x0}}, lock = {lock = {__data = {__lock
= 0, __count = 0, __owner = 0,
__nusers = 0, __kind = 512, __spins = 0, __elision = 0, __list =
{__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 17 times>, "\002",
'\000' <repeats 21 times>,
__align = 0}}}, drv = 0x7f435aadf7c0 <virSecurityDriverDAC>, flags =
10, virtDriver = 0x7f43541e71b2 "QEMU", privateData = 0x7f430807b180}
Bad:
(gdb) p *((virSecurityStackDataPtr)(((virQEMUDriverPtr)conn->privateData
)->securityManager->privateData))->itemsHead->securityManager
$9 = {parent = {parent = {parent_instance = {g_type_instance = {g_class =
0x7f8b0c0259e0}, ref_count = 1, qdata = 0x0}}, lock = {lock = {__data = {__lock
= 0, __count = 0, __owner = 0,
__nusers = 0, __kind = 512, __spins = 0, __elision = 0, __list =
{__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 17 times>, "\002",
'\000' <repeats 21 times>,
__align = 0}}}, drv = 0x7f8b572d24c0 <virSecurityDriverNop>, flags = 8,
virtDriver = 0x7f8b501d91b2 "QEMU", privateData = 0x0}
(gdb) p *((virSecurityStackDataPtr)(((virQEMUDriverPtr)conn->privateData
)->securityManager->privateData))->itemsHead->next->securityManager
$10 = {parent = {parent = {parent_instance = {g_type_instance = {g_class =
0x7f8b0c0259e0}, ref_count = 1, qdata = 0x0}}, lock = {lock = {__data = {__lock
= 0, __count = 0, __owner = 0,
__nusers = 0, __kind = 512, __spins = 0, __elision = 0, __list =
{__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 17 times>, "\002",
'\000' <repeats 21 times>,
__align = 0}}}, drv = 0x7f8b572d27c0 <virSecurityDriverDAC>, flags =
10, virtDriver = 0x7f8b501d91b2 "QEMU", privateData = 0x7f8b0c07add0}
See virSecurityDriverNop vs virAppArmorSecurityDriver in the above
output
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https://bugs.launchpad.net/bugs/1895967
Title:
3.0.0~beta1-0ubuntu1 in Groovy breaks Libvirt/Qemu/KVM
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