Re: WARN_ON in __writeback_inodes_sb_nr

2017-12-20 Thread David Ahern 
I am still seeing this problem on 4.15.0-rc3


On 11/17/17 12:55 PM, David Ahern wrote:
> I see a backtrace booting 4.14+ on a mellanox switch. The trace is due
> to the WARN_ON in __writeback_inodes_sb_nr.
> 
> [   40.958590] WARNING: CPU: 0 PID: 183 at
> /home/dsa/kernel-2.git/fs/fs-writeback.c:2339
> __writeback_inodes_sb_nr+0x8a/0x90
> [   40.958593] Modules linked in: ebtable_filter ebtables ip6table_raw
> ip6table_mangle ip6table_filter ip6_tables iTCO_wdt iTCO_vendor_support
> coretemp x86_pkg_temp_thermal kvm_intel kvm irqbypass lpc_ich mfd_core
> battery mei_me mei shpchp lm75 regmap_i2c pmbus pmbus_core i2c_dev
> i2c_mux k10temp mpls_iptunnel mpls_router ip_tunnel at24 tun
> br_netfilter bonding loop autofs4 dm_mod dax crc32c_intel i2c_i801
> i2c_core thermal mlxsw_spectrum psample parman bridge stp llc mlxsw_pci
> mlxsw_core mlxfw devlink e1000e hwmon
> [   40.958664] CPU: 0 PID: 183 Comm: btrfs-transacti Not tainted 4.14.0+ #38
> [   40.958666] Hardware name: Mellanox Technologies Ltd. Mellanox
> switch/Mellanox switch, BIOS 4.6.5 05/21/2015
> [   40.958669] task: 8803db266540 task.stack: c9344000
> [   40.958675] RIP: 0010:__writeback_inodes_sb_nr+0x8a/0x90
> [   40.958677] RSP: 0018:c9347dc8 EFLAGS: 00010246
> [   40.958681] RAX:  RBX: 88040a641800 RCX:
> 
> [   40.958683] RDX: 0002 RSI: 45a7 RDI:
> c9347e10
> [   40.958685] RBP: c9347e20 R08: 0003 R09:
> c9347dd0
> [   40.958687] R10: 8803db287000 R11:  R12:
> c9347dcc
> [   40.958689] R13: 8804015e7a00 R14: 8803dade2bc8 R15:
> 880400a68000
> [   40.958692] FS:  () GS:88041dc0()
> knlGS:
> [   40.958695] CS:  0010 DS:  ES:  CR0: 80050033
> [   40.958697] CR2: 5602d78aad50 CR3: 01e09002 CR4:
> 001606f0
> [   40.958699] Call Trace:
> [   40.958710]  writeback_inodes_sb+0x27/0x30
> [   40.958719]  btrfs_commit_transaction+0x7b2/0x8e0
> [   40.958723]  ? start_transaction+0x9e/0x450
> [   40.958728]  transaction_kthread+0x177/0x1b0
> [   40.958735]  kthread+0x11d/0x150
> [   40.958740]  ? btrfs_cleanup_transaction+0x4f0/0x4f0
> [   40.958744]  ? kthread_associate_blkcg+0xb0/0xb0
> [   40.958751]  ret_from_fork+0x24/0x30
> [   40.958754] Code: 8b 42 70 48 85 c0 74 23 4c 89 ce 48 89 df 41 0f b6
> d3 e8 fa fc ff ff 4c 89 e6 48 89 df e8 8f de ff ff 48 83 c4 48 5b 41 5c
> 5d c3 <0f> ff eb d9 66 90 0f 1f 44 00 00 55 31 c9 48 89 e5 e8 60 ff ff
> [   40.958826] ---[ end trace defabeb7afdfd414 ]---
> 
> 
> Tree is DaveM's net-next, but it was recently merged with Linus' tree at:
> 
> commit 6363b3f3ac5be096d08c8c504128befa0c033529
> Merge: 1b6115fbe3b3 6297fabd93f9
> Author: Linus Torvalds <torva...@linux-foundation.org>
> Date:   Wed Nov 15 15:12:28 2017 -0800
> 
> Merge tag 'ipmi-for-4.15' of git://github.com/cminyard/linux-ipmi
> 

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WARN_ON in __writeback_inodes_sb_nr

2017-11-17 Thread David Ahern 
I see a backtrace booting 4.14+ on a mellanox switch. The trace is due
to the WARN_ON in __writeback_inodes_sb_nr.

[   40.958590] WARNING: CPU: 0 PID: 183 at
/home/dsa/kernel-2.git/fs/fs-writeback.c:2339
__writeback_inodes_sb_nr+0x8a/0x90
[   40.958593] Modules linked in: ebtable_filter ebtables ip6table_raw
ip6table_mangle ip6table_filter ip6_tables iTCO_wdt iTCO_vendor_support
coretemp x86_pkg_temp_thermal kvm_intel kvm irqbypass lpc_ich mfd_core
battery mei_me mei shpchp lm75 regmap_i2c pmbus pmbus_core i2c_dev
i2c_mux k10temp mpls_iptunnel mpls_router ip_tunnel at24 tun
br_netfilter bonding loop autofs4 dm_mod dax crc32c_intel i2c_i801
i2c_core thermal mlxsw_spectrum psample parman bridge stp llc mlxsw_pci
mlxsw_core mlxfw devlink e1000e hwmon
[   40.958664] CPU: 0 PID: 183 Comm: btrfs-transacti Not tainted 4.14.0+ #38
[   40.958666] Hardware name: Mellanox Technologies Ltd. Mellanox
switch/Mellanox switch, BIOS 4.6.5 05/21/2015
[   40.958669] task: 8803db266540 task.stack: c9344000
[   40.958675] RIP: 0010:__writeback_inodes_sb_nr+0x8a/0x90
[   40.958677] RSP: 0018:c9347dc8 EFLAGS: 00010246
[   40.958681] RAX:  RBX: 88040a641800 RCX:

[   40.958683] RDX: 0002 RSI: 45a7 RDI:
c9347e10
[   40.958685] RBP: c9347e20 R08: 0003 R09:
c9347dd0
[   40.958687] R10: 8803db287000 R11:  R12:
c9347dcc
[   40.958689] R13: 8804015e7a00 R14: 8803dade2bc8 R15:
880400a68000
[   40.958692] FS:  () GS:88041dc0()
knlGS:
[   40.958695] CS:  0010 DS:  ES:  CR0: 80050033
[   40.958697] CR2: 5602d78aad50 CR3: 01e09002 CR4:
001606f0
[   40.958699] Call Trace:
[   40.958710]  writeback_inodes_sb+0x27/0x30
[   40.958719]  btrfs_commit_transaction+0x7b2/0x8e0
[   40.958723]  ? start_transaction+0x9e/0x450
[   40.958728]  transaction_kthread+0x177/0x1b0
[   40.958735]  kthread+0x11d/0x150
[   40.958740]  ? btrfs_cleanup_transaction+0x4f0/0x4f0
[   40.958744]  ? kthread_associate_blkcg+0xb0/0xb0
[   40.958751]  ret_from_fork+0x24/0x30
[   40.958754] Code: 8b 42 70 48 85 c0 74 23 4c 89 ce 48 89 df 41 0f b6
d3 e8 fa fc ff ff 4c 89 e6 48 89 df e8 8f de ff ff 48 83 c4 48 5b 41 5c
5d c3 <0f> ff eb d9 66 90 0f 1f 44 00 00 55 31 c9 48 89 e5 e8 60 ff ff
[   40.958826] ---[ end trace defabeb7afdfd414 ]---


Tree is DaveM's net-next, but it was recently merged with Linus' tree at:

commit 6363b3f3ac5be096d08c8c504128befa0c033529
Merge: 1b6115fbe3b3 6297fabd93f9
Author: Linus Torvalds 
Date:   Wed Nov 15 15:12:28 2017 -0800

Merge tag 'ipmi-for-4.15' of git://github.com/cminyard/linux-ipmi

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