Hi, on FreeBSD 10.0-CURRENT #7 r228176M: Thu Dec 1 13:56:02 CET 2011 (GENERIC + CAPABILITIES + netmap with head.diff and bge patches applied) I get these lock order reversals when running a netmap-enabled program (details in the attachment) with syscall (54, FreeBSD ELF64, sys_ioctl):
Dec 1 16:23:09 acer kernel: exclusive sleep mutex netmap memory allocator lock (netmap memory allocator lock) r = 0 (0xfffffe00027d1880) locked @ /usr/src/sys/dev/netmap/netmap.c:1484 Dec 1 16:23:09 acer kernel: exclusive sleep mutex bge0 (network driver) r = 0 (0xffffff8000768010) locked @ /usr/src/sys/dev/netmap/if_bge_netmap.h:60 The application does not invoke the offending function (netmap_malloc()) itself. Regards, René -- http://www.rene-ladan.nl:8080/ GPG fingerprint = ADBC ECCD EB5F A6B4 549F 600D 8C9E 647A E564 2BFC (subkeys.pgp.net)
Dec 1 15:41:20 acer kernel: FreeBSD 10.0-CURRENT #7 r228176M: Thu Dec 1 13:56:02 CET 2011 Dec 1 15:41:20 acer kernel: real memory = 4294967296 (4096 MB) Dec 1 15:41:20 acer kernel: avail memory = 4080091136 (3891 MB) Dec 1 15:41:20 acer kernel: 001.000005 netmap_memory_init [1627] netmap_buffer_base 0xffffff8117eaa000 (offset 679936) Dec 1 15:41:20 acer kernel: 001.000006 netmap_memory_init [1636] Have 129 MB, use 661KB for rings, 65862 buffers at 0xffffff8117eaa000 Dec 1 15:41:20 acer kernel: netmap: loaded module with 129 Mbytes Dec 1 15:41:20 acer kernel: bge0: <Broadcom NetLink Gigabit Ethernet Controller , ASIC rev. 0x5784100> mem 0xf5100000-0xf510ffff irq 16 at device 0.0 on pci2 Dec 1 15:41:20 acer kernel: bge0: CHIP ID 0x05784100; ASIC REV 0x5784; CHIP REV 0x57841; PCI-E Dec 1 15:41:20 acer kernel: miibus0: <MII bus> on bge0 Dec 1 15:41:20 acer kernel: brgphy0: <BCM5784 10/100/1000baseT PHY> PHY 1 on miibus0 Dec 1 15:41:20 acer kernel: brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master, auto, auto-flow Dec 1 15:41:20 acer kernel: bge0: Ethernet address: 00:26:2d:5e:d8:ee Dec 1 15:41:20 acer kernel: 001.000009 netmap_attach [1243] ok for bge0 Dec 1 16:23:09 acer kernel: 989.882634 netmap_set_ringid [779] ringid bge0 set to SW RING Dec 1 16:23:09 acer kernel: uma_zalloc_arg: zone "64" with the following non-sleepable locks held: Dec 1 16:23:09 acer kernel: exclusive sleep mutex netmap memory allocator lock (netmap memory allocator lock) r = 0 (0xfffffe00027d1880) locked @ /usr/src/sys/dev/netmap/netmap.c:1484 Dec 1 16:23:09 acer kernel: exclusive sleep mutex bge0 (network driver) r = 0 (0xffffff8000768010) locked @ /usr/src/sys/dev/netmap/if_bge_netmap.h:60 Dec 1 16:23:09 acer kernel: KDB: stack backtrace: Dec 1 16:23:09 acer kernel: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a Dec 1 16:23:10 acer kernel: kdb_backtrace() at kdb_backtrace+0x37 Dec 1 16:23:10 acer kernel: _witness_debugger() at _witness_debugger+0x2c Dec 1 16:23:10 acer kernel: witness_warn() at witness_warn+0x2c2 Dec 1 16:23:10 acer kernel: uma_zalloc_arg() at uma_zalloc_arg+0x335 Dec 1 16:23:10 acer kernel: malloc() at malloc+0xbe Dec 1 16:23:10 acer kernel: netmap_malloc() at netmap_malloc+0x86 Dec 1 16:23:10 acer kernel: netmap_ioctl() at netmap_ioctl+0x5bd Dec 1 16:23:10 acer kernel: devfs_ioctl_f() at devfs_ioctl_f+0x7a Dec 1 16:23:10 acer kernel: kern_ioctl() at kern_ioctl+0xcd Dec 1 16:23:10 acer kernel: sys_ioctl() at sys_ioctl+0xfd Dec 1 16:23:10 acer kernel: amd64_syscall() at amd64_syscall+0x3ac Dec 1 16:23:10 acer kernel: Xfast_syscall() at Xfast_syscall+0xf7 Dec 1 16:23:10 acer kernel: --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8022aef0c, rsp = 0x7fffffffd4b8, rbp = 0x802bfb100 --- Dec 1 16:23:10 acer kernel: uma_zalloc_arg: zone "64" with the following non-sleepable locks held: Dec 1 16:23:10 acer kernel: exclusive sleep mutex netmap memory allocator lock (netmap memory allocator lock) r = 0 (0xfffffe00027d1880) locked @ /usr/src/sys/dev/netmap/netmap.c:1484 Dec 1 16:23:10 acer kernel: exclusive sleep mutex bge0 (network driver) r = 0 (0xffffff8000768010) locked @ /usr/src/sys/dev/netmap/if_bge_netmap.h:60 Dec 1 16:23:10 acer kernel: KDB: stack backtrace: Dec 1 16:23:10 acer kernel: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a Dec 1 16:23:10 acer kernel: kdb_backtrace() at kdb_backtrace+0x37 Dec 1 16:23:10 acer kernel: _witness_debugger() at _witness_debugger+0x2c Dec 1 16:23:10 acer kernel: witness_warn() at witness_warn+0x2c2 Dec 1 16:23:10 acer kernel: uma_zalloc_arg() at uma_zalloc_arg+0x335 Dec 1 16:23:10 acer kernel: malloc() at malloc+0xbe Dec 1 16:23:10 acer kernel: netmap_malloc() at netmap_malloc+0x86 Dec 1 16:23:10 acer kernel: netmap_ioctl() at netmap_ioctl+0x817 Dec 1 16:23:10 acer kernel: devfs_ioctl_f() at devfs_ioctl_f+0x7a Dec 1 16:23:10 acer kernel: kern_ioctl() at kern_ioctl+0xcd Dec 1 16:23:10 acer kernel: sys_ioctl() at sys_ioctl+0xfd Dec 1 16:23:10 acer kernel: amd64_syscall() at amd64_syscall+0x3ac Dec 1 16:23:10 acer kernel: Xfast_syscall() at Xfast_syscall+0xf7 Dec 1 16:23:10 acer kernel: --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8022aef0c, rsp = 0x7fffffffd4b8, rbp = 0x802bfb100 --- Dec 1 16:23:10 acer kernel: 990.041760 netmap_reset [1403] +++ NR_REINIT ok on bge0 RX[0] Dec 1 16:23:10 acer kernel: 990.041948 netmap_reset [1384] +++ NR_REINIT ok on bge0 TX[0] Dec 1 16:23:10 acer kernel: bge0: link state changed to DOWN Dec 1 16:23:10 acer kernel: 990.051589 netmap_dtor [352] deleting last netmap instance for bge0 Dec 1 16:23:12 acer kernel: bge0: link state changed to UP
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