This patch seems to generate a list corruption [1] when I test
with Doug's for-4.5 tree.
Eran, care to take a look at this?
[1]:
mlx4_core: Mellanox ConnectX core driver v2.2-1 (Feb, 2014)
mlx4_core: Initializing 0000:04:00.0
mlx4_core 0000:04:00.0: PCIe link speed is 8.0GT/s, device supports
8.0GT/s
mlx4_core 0000:04:00.0: PCIe link width is x8, device supports x8
<mlx4_ib> mlx4_ib_add: mlx4_ib: Mellanox ConnectX InfiniBand driver
v2.2-1 (Feb 2014)
<mlx4_ib> mlx4_ib_add: counter index 0 for port 1 allocated 0
<mlx4_ib> mlx4_ib_add: counter index 1 for port 2 allocated 0
BUG: unable to handle kernel NULL pointer dereference at
(null)
IP: [<ffffffff81274e36>] __list_add+0x26/0xd0
PGD 46da14067 PUD 46daa0067 PMD 0
Oops: 0000 [#1] SMP
Modules linked in: mlx4_ib(+) ib_sa ib_mad mlx4_core mlx5_ib mlx5_core
ib_core ib_addr netconsole configfs nfsv3 nfs fscache cfg80211 rfkill
x86_pkg_temp_thermal coretemp kvm_intel kvm irqbypass crc32c_intel
aesni_intel aes_x86_64 glue_helper lrw dm_mod gf128mul ablk_helper
cryptd iTCO_wdt iTCO_vendor_support sb_edac shpchp ipmi_si ioatdma
lpc_ich mfd_core edac_core pcspkr wmi ipmi_msghandler i2c_i801
acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables ext4
mbcache jbd2 sd_mod isci libsas igb serio_raw ahci ptp pps_core libahci
i2c_algo_bit scsi_transport_sas i2c_core dca ipv6 autofs4 [last
unloaded: mlx5_core]
CPU: 0 PID: 1737 Comm: modprobe Not tainted 4.4.0-rc6+ #107
Hardware name: Supermicro SYS-1027R-WRF/X9DRW, BIOS 3.0a 08/08/2013
task: ffff8804673da800 ti: ffff880466694000 task.ti: ffff880466694000
RIP: 0010:[<ffffffff81274e36>] [<ffffffff81274e36>]
__list_add+0x26/0xd0
RSP: 0018:ffff880466697898 EFLAGS: 00010246
RAX: 00000000ffffffff RBX: ffff8804666978c8 RCX: ffff8804673da800
RDX: ffff88086b8539b8 RSI: 0000000000000000 RDI: ffff8804666978c8
RBP: ffff8804666978b8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 000000000000fffe R12: ffff88086b8539b8
R13: 0000000000000000 R14: ffff88086b8539b8 R15: ffff880466697908
FS: 00007f37a02cf700(0000) GS:ffff88047fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000046b6ee000 CR4: 00000000000406f0
Stack:
ffff8804673da800 ffff88086b8539b0 ffff8804673da800 ffff88086b8539b4
ffff880466697958 ffffffff8154f7be ffff880466697904 0000000000000292
ffff880466697938 ffffffff81259bc1 0000000000007f49 80000000024000c0
Call Trace:
[<ffffffff8154f7be>] __mutex_lock_slowpath+0x6e/0x110
[<ffffffff81259bc1>] ? ida_simple_get+0x91/0x100
[<ffffffff811d354e>] ? kernfs_next_descendant_post+0x1e/0x90
[<ffffffff811d3646>] ? kernfs_activate+0x86/0xf0
[<ffffffff8154f87e>] mutex_lock+0x1e/0x40
[<ffffffffa00fb083>] iboe_process_mad+0x73/0x180 [mlx4_ib]
[<ffffffffa00fba36>] mlx4_ib_process_mad+0xd6/0x110 [mlx4_ib]
[<ffffffffa06b4703>] get_perf_mad+0x103/0x140 [ib_core]
[<ffffffffa06b4764>] get_counter_table+0x24/0x40 [ib_core]
[<ffffffff8115846e>] ? __kmalloc+0xde/0xe0
[<ffffffffa06b4895>] add_port+0x115/0x3f0 [ib_core]
[<ffffffffa06b4c5e>] ib_device_register_sysfs+0xee/0x160 [ib_core]
[<ffffffffa06b5e05>] ib_register_device+0x1d5/0x300 [ib_core]
[<ffffffffa010282b>] mlx4_ib_add+0x78b/0xd00 [mlx4_ib]
[<ffffffffa08027ce>] mlx4_add_device+0x3e/0xb0 [mlx4_core]
[<ffffffffa0802957>] mlx4_register_interface+0x87/0xe0 [mlx4_core]
[<ffffffffa0096055>] mlx4_ib_init+0x55/0x72 [mlx4_ib]
[<ffffffffa0096000>] ? 0xffffffffa0096000
[<ffffffff81000368>] do_one_initcall+0xa8/0x1c0
[<ffffffff810ca5bf>] do_init_module+0x5f/0x210
[<ffffffff810cc267>] load_module+0x5d7/0x700
[<ffffffff810c97a0>] ? mod_sysfs_teardown+0x140/0x140
[<ffffffff810c91f0>] ? module_sect_show+0x20/0x20
[<ffffffff810cc44b>] SyS_finit_module+0xbb/0xf0
[<ffffffff81551757>] entry_SYSCALL_64_fastpath+0x12/0x6a
Code: 90 90 90 90 90 55 48 89 e5 48 83 ec 20 48 89 5d e8 4c 89 65 f0 48
89 fb 4c 89 6d f8 4c 8b 42 08 49 89 f5 49 89 d4 49 39 f0 75 31 <4d> 8b
45 00 4d 39 c4 75 6f 4c 39 e3 74 45 4c 39 eb 74 40 49 89
RIP [<ffffffff81274e36>] __list_add+0x26/0xd0
RSP <ffff880466697898>
CR2: 0000000000000000
---[ end trace 5f4fe0ca857661e6 ]---
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