Date: Mon, 17 Jan 2011 20:55:26 +0300 From: Sergey Kandaurov <pluknet@gmail.com> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: uma_zalloc_arg: zone "256" with non-sleepable exclusive rw ifnet_rw @ /usr/src/sys/net/if.c:414 Message-ID: <AANLkTi=dZ4vOSx82Wp%2BqAwmT97mucqwtf6dDu4pnOCR2@mail.gmail.com>
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Hi, I see this "malloc with non-sleepable" on current during boot. It's strange that I don't see it if I boot via pxe/nfs. if_alloc() calls ifindex_alloc_locked() under IFNET_WLOCK() which might call if_grow(). Looks like a regression from r196553. igb6: <Intel(R) PRO/1000 Network Connection version - 2.0.7> port 0x8020-0x803f mem 0xd0820000-0xd083ffff,0xd0400000-0xd07fffff,0xd08c4000-0xd08c7fff irq 54 at device 0.0 on pci144 uma_zalloc_arg: zone "256" with the following non-sleepable locks held: exclusive rw ifnet_rw (ifnet_rw) r = 0 (0xffffffff80e9aac0) locked @ /usr/src/sys/net/if.c:414 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a kdb_backtrace() at kdb_backtrace+0x37 _witness_debugger() at _witness_debugger+0x2e witness_warn() at witness_warn+0x2c4 uma_zalloc_arg() at uma_zalloc_arg+0x335 malloc() at malloc+0xbe if_grow() at if_grow+0x2f if_alloc() at if_alloc+0x2f3 igb_attach() at igb_attach+0x1a3a device_attach() at device_attach+0x69 bus_generic_attach() at bus_generic_attach+0x1a acpi_pci_attach() at acpi_pci_attach+0x14f device_attach() at device_attach+0x69 bus_generic_attach() at bus_generic_attach+0x1a acpi_pcib_attach() at acpi_pcib_attach+0x1a7 acpi_pcib_pci_attach() at acpi_pcib_pci_attach+0x95 device_attach() at device_attach+0x69 bus_generic_attach() at bus_generic_attach+0x1a acpi_pci_attach() at acpi_pci_attach+0x14f device_attach() at device_attach+0x69 bus_generic_attach() at bus_generic_attach+0x1a acpi_pcib_attach() at acpi_pcib_attach+0x1a7 acpi_pcib_acpi_attach() at acpi_pcib_acpi_attach+0x1fd device_attach() at device_attach+0x69 bus_generic_attach() at bus_generic_attach+0x1a acpi_attach() at acpi_attach+0xac4 device_attach() at device_attach+0x69 bus_generic_attach() at bus_generic_attach+0x1a nexus_acpi_attach() at nexus_acpi_attach+0x69 device_attach() at device_attach+0x69 bus_generic_new_pass() at bus_generic_new_pass+0xd6 bus_set_pass() at bus_set_pass+0x7a configure() at configure+0xa mi_startup() at mi_startup+0x77 btext() at btext+0x2c igb6: Ethernet address: 00:1b:21:73:59:14 -- wbr, pluknet
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