Re: CVS commit: src/sys [freeze on boot]

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Mon, Jan 20, 2020 at 12:51:00PM +0000, Andrew Doran wrote:
> This also happened the last time I touched rw_downgrade(), and I backed out
> the change then, but both times I don't see the bug.  I have some questions:
> 
> - Are you running DIAGNOSTIC and/or LOCKDEBUG?  I would be very interested
>   to see what happens with a LOCKDEBUG kernel here.

One worked with the addition of LOCKDEBUG. The other didn't, but it seems
to be unrelated:

db{0}> show panic
Panic string: mutex_vector_enter,510: uninitialized lock (lock=0xffffbd012366609
0, from=ffffffff8033dc9d)
bt
breakpoint() at netbsd:breakpoint+0x5
vpanic() at netbsd:vpanic+0x178
snprintf() at netbsd:snprintf
lockdebug_wantlock() at netbsd:lockdebug_wantlock+0x166
mutex_enter() at netbsd:mutex_enter+0x37c
ixgbe_getext() at netbsd:ixgbe_getext+0x1d
ixgbe_jcl_freeall.isra.0() at netbsd:ixgbe_jcl_freeall.isra.0+0xd6
ixgbe_jcl_destroy() at netbsd:ixgbe_jcl_destroy+0x14
ixgbe_free_receive_structures() at netbsd:ixgbe_free_receive_structures+0x11b
ixgbe_attach() at netbsd:ixgbe_attach+0x2b0a
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
pci_probe_device() at netbsd:pci_probe_device+0x586
pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x1b7
pcirescan() at netbsd:pcirescan+0x4e
pciattach() at netbsd:pciattach+0x186
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
ppbattach() at netbsd:ppbattach+0x1c5
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
pci_probe_device() at netbsd:pci_probe_device+0x586
pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x1b7
pcirescan() at netbsd:pcirescan+0x4e
pciattach() at netbsd:pciattach+0x186
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
ppbattach() at netbsd:ppbattach+0x1c5
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
pci_probe_device() at netbsd:pci_probe_device+0x586
pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x1b7
pcirescan() at netbsd:pcirescan+0x4e
pciattach() at netbsd:pciattach+0x186
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
ppbattach() at netbsd:ppbattach+0x1c5
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
pci_probe_device() at netbsd:pci_probe_device+0x586
pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x1b7
pcirescan() at netbsd:pcirescan+0x4e
pciattach() at netbsd:pciattach+0x186
config_attach_loc() at netbsd:config_attach_loc+0x1a8
config_found_sm_loc() at netbsd:config_found_sm_loc+0x4d
mp_pci_scan() at netbsd:mp_pci_scan+0xa4
amd64_mainbus_attach() at netbsd:amd64_mainbus_attach+0x237
mainbus_attach() at netbsd:mainbus_attach+0x70
config_attach_loc() at netbsd:config_attach_loc+0x1a8
cpu_configure() at netbsd:cpu_configure+0x2b
main() at netbsd:main+0x311

Cheers,

Patrick