On Wed, Jan 25, 2017 at 10:31:32AM +0100, Marc Kleine-Budde wrote:
> Hello,
>
> I'm using debian's latest 4.9 Kernel on a 32bit armhf SMP board. The
> filesystem is in raid1 mode using two harddrives. After the system
> crashed (for yet unknown reason) the mounting of the raid1 failed
> with the following backtrace:
Since this was happening at mount stage, it seems like our fs_root is
not set up yet, could you please try this debugging one?
Thanks,
-liubo
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index dcd2e79..11a3bf4 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4978,6 +4978,12 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
spin_lock(&space_info->lock);
+ if (!fs_info->fs_root) {
+ pr_info("BTRFS: fs_info->fs_root is not set up yet %s:%d\n", __func__, __LINE__);
+ WARN_ON(1);
+ spin_unlock(&space_info->lock);
+ return;
+ }
to_reclaim = btrfs_calc_reclaim_metadata_size(fs_info->fs_root,
space_info);
if (!to_reclaim) {
>
> [ 31.163013] BTRFS info (device sda): The free space cache file (1692078702592) is invalid. skip it
> [ 31.163013]
> [ 36.257271] Unable to handle kernel NULL pointer dereference at virtual address 000001dc
> [ 36.265421] pgd = c0004000
> [ 36.268131] [000001dc] *pgd=00000000
> [ 36.271778] Internal error: Oops: 5 [#1] SMP ARM
> [ 36.276393] Modules linked in: arc4 ath9k_htc ath9k_common ath9k_hw rt2800usb rt2x00usb rt2800lib ath rt2x00lib mac80211 cfg80211 crc_ccitt rfkill usbhid hid mcs7830 usbnet mii evdev ext4 sun4i_codec crc16 jbd2 fscrypto ecb mbcache snd_soc_core snd_pcm_dmaengine snd_pcm axp20x_usb_power snd_timer axp20x_pek ir_lirc_codec lirc_dev snd soundcore sunxi_cir sun4i_ts nvmem_sunxi_sid nvmem_core sunxi_wdt sg spi_sun4i sun4i_ss des_generic leds_gpio cpufreq_dt ip_tables x_tables autofs4 btrfs crc32c_generic xor zlib_deflate raid6_pq sd_mod axp20x_regulator realtek ahci_sunxi libahci_platform libahci sunxi ohci_platform phy_generic libata dwmac_sunxi stmmac_platform ohci_hcd musb_hdrc ehci_platform stmmac udc_core ehci_hcd i2c_mv64xxx scsi_mod usbcore phy_sun4i_usb extcon_core sunxi_mmc usb_common
> [ 36.347114] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 4.9.0-1-armmp #1 Debian 4.9.2-2
> [ 36.355193] Hardware name: Allwinner sun7i (A20) Family
> [ 36.360747] Workqueue: events_unbound btrfs_async_reclaim_metadata_space [btrfs]
> [ 36.368149] task: ee8ac0c0 task.stack: ee8ec000
> [ 36.372830] PC is at can_overcommit.part.7+0x18/0x174 [btrfs]
> [ 36.378695] LR is at btrfs_async_reclaim_metadata_space+0x4e4/0x884 [btrfs]
> [ 36.385649] pc : [<bf3a11d4>] lr : [<bf3adf20>] psr: 80070013
> [ 36.385649] sp : ee8ede10 ip : ee8ede50 fp : ee8ede4c
> [ 36.397111] r10: c9bf6800 r9 : 00000000 r8 : c9bf6890
> [ 36.402328] r7 : 00000000 r6 : c9bf6898 r5 : 00000000 r4 : 00000004
> [ 36.408847] r3 : 00000000 r2 : 00200000 r1 : c9bf6800 r0 : 00000000
> [ 36.415367] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
> [ 36.422492] Control: 10c5387d Table: 49e4406a DAC: 00000051
> [ 36.428232] Process kworker/u4:0 (pid: 6, stack limit = 0xee8ec220)
> [ 36.434490] Stack: (0xee8ede10 to 0xee8ee000)
> [ 36.438845] de00: ee8ede94 ee8ede20 c0191798 c01c707c
> [ 36.447014] de20: 00000000 00000004 00000000 c9bf6898 00000000 c9bf6890 00000000 c9bf6800
> [ 36.455184] de40: ee8eded4 ee8ede50 bf3adf20 bf3a11c8 00000002 c0114780 ee956018 ee8ac0c0
> [ 36.463353] de60: 00000000 ee8f7880 ee8ac0c0 ee8f7880 ef6d5140 00000000 eeb3c1c0 ee8ac0c0
> [ 36.471522] de80: c0bfa140 c0c05408 ee8edefc c9c23ac4 c07f3e5c c01787b8 00000000 00000000
> [ 36.479692] dea0: 00000000 c0168f68 ee8eded4 c9c23ac4 ee89e400 ee8a9800 00000000 ee8ad700
> [ 36.487861] dec0: c0ce3334 ee8ad705 ee8edf14 ee8eded8 c0169170 bf3ada48 ee8a9800 00000088
> [ 36.496030] dee0: c0c03d00 00000000 ee8ec000 ee8a9800 ee89e418 00000088 c0c03d00 ee8a9818
> [ 36.504200] df00: ee8ec000 ee89e400 ee8edf5c ee8edf18 c0169ff8 c0168fec ee8edf3c c0934934
> [ 36.512369] df20: 00000000 ee8a9990 ee8ec000 c0c4614e 00000000 00000000 ee8a8d40 ee89e400
> [ 36.520538] df40: c0169f98 00000000 00000000 00000000 ee8edfac ee8edf60 c016f94c c0169fa4
> [ 36.528707] df60: 00000000 ee8a8d40 ee89e400 00000000 00000000 ee8edf74 ee8edf74 00000000
> [ 36.536877] df80: 00000000 ee8edf84 ee8edf84 00040902 ee8a8d40 c016f850 00000000 00000000
> [ 36.545045] dfa0: 00000000 ee8edfb0 c010a2f8 c016f85c 00000000 00000000 00000000 00000000
> [ 36.553214] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 36.561383] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 19238001 83218006
> [ 36.569857] [<bf3a11d4>] (can_overcommit.part.7 [btrfs]) from [<bf3adf20>] (btrfs_async_reclaim_metadata_space+0x4e4/0x884 [btrfs])
> [ 36.581811] [<bf3adf20>] (btrfs_async_reclaim_metadata_space [btrfs]) from [<c0169170>] (process_one_work+0x190/0x49c)
> [ 36.592507] [<c0169170>] (process_one_work) from [<c0169ff8>] (worker_thread+0x60/0x538)
> [ 36.600596] [<c0169ff8>] (worker_thread) from [<c016f94c>] (kthread+0xfc/0x114)
> [ 36.607907] [<c016f94c>] (kthread) from [<c010a2f8>] (ret_from_fork+0x14/0x3c)
> [ 36.615126] Code: e24cb004 e24dd014 e52de004 e8bd4000 (e59061dc)
> [ 36.621363] ---[ end trace 692c04410689c7f2 ]---
> [ 36.639082] Unable to handle kernel paging request at virtual address ffffffec
> [ 36.646317] pgd = c0004000
> [ 36.649023] [ffffffec] *pgd=6fffd861, *pte=00000000, *ppte=00000000
> [ 36.655332] Internal error: Oops: 37 [#2] SMP ARM
> [ 36.660033] Modules linked in: arc4 ath9k_htc ath9k_common ath9k_hw rt2800usb rt2x00usb rt2800lib ath rt2x00lib mac80211 cfg80211 crc_ccitt rfkill usbhid hid mcs7830 usbnet mii evdev ext4 sun4i_codec crc16 jbd2 fscrypto ecb mbcache snd_soc_core snd_pcm_dmaengine snd_pcm axp20x_usb_power snd_timer axp20x_pek ir_lirc_codec lirc_dev snd soundcore sunxi_cir sun4i_ts nvmem_sunxi_sid nvmem_core sunxi_wdt sg spi_sun4i sun4i_ss des_generic leds_gpio cpufreq_dt ip_tables x_tables autofs4 btrfs crc32c_generic xor zlib_deflate raid6_pq sd_mod axp20x_regulator realtek ahci_sunxi libahci_platform libahci sunxi ohci_platform phy_generic libata dwmac_sunxi stmmac_platform ohci_hcd musb_hdrc ehci_platform stmmac udc_core ehci_hcd i2c_mv64xxx scsi_mod usbcore phy_sun4i_usb extcon_core sunxi_mmc usb_common
> [ 36.730749] CPU: 1 PID: 6 Comm: kworker/u4:0 Tainted: G D 4.9.0-1-armmp #1 Debian 4.9.2-2
> [ 36.740040] Hardware name: Allwinner sun7i (A20) Family
> [ 36.745269] task: ee8ac0c0 task.stack: ee8ec000
> [ 36.749810] PC is at kthread_data+0x18/0x20
> [ 36.753991] LR is at wq_worker_sleeping+0x18/0xe0
> [ 36.758692] pc : [<c01705fc>] lr : [<c016a578>] psr: 20070093
> [ 36.758692] sp : ee8edb08 ip : ee8edb18 fp : ee8edb14
> [ 36.770153] r10: c0c05408 r9 : c0bfa140 r8 : ee8ac0c0
> [ 36.775371] r7 : 00000000 r6 : ee8ac4ec r5 : ef6d5140 r4 : c0bfa140
> [ 36.781889] r3 : 00000000 r2 : 00000020 r1 : 00000000 r0 : ee8ac0c0
> [ 36.788409] Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none
> [ 36.795620] Control: 10c5387d Table: 49a4c06a DAC: 00000051
> [ 36.801359] Process kworker/u4:0 (pid: 6, stack limit = 0xee8ec220)
> [ 36.807617] Stack: (0xee8edb08 to 0xee8ee000)
> [ 36.811973] db00: ee8edb2c ee8edb18 c016a578 c01705f0 c0bfa140 ef6d5140
> [ 36.820143] db20: ee8edb94 ee8edb30 c07f40a4 c016a56c eef60880 eef6088c 60070013 c03e3ef0
> [ 36.828312] db40: ee8edb6c ee8edb50 2eadb000 c017e120 c0cf5100 eef60880 ef6d5140 60070013
> [ 36.836482] db60: ee8edb8c ee8edb70 c03e4268 ee8ac0c0 ee8edbbc ee8ed7fc ee8edbbc ee8ed7fc
> [ 36.844651] db80: 00000000 c0c0a10c ee8edba4 ee8edb98 c017e120 c07f3b24 ee8edbdc ee8edba8
> [ 36.852821] dba0: c01525c8 c017e094 c0cf1ca0 ee8eddc0 0000000b 00000001 bf3a11d6 ee8edbbc
> [ 36.860991] dbc0: ee8edbbc 00040902 c014caf4 00000001 ee8edc74 ee8edbe0 c010f7d0 c0151e64
> [ 36.869160] dbe0: ee8ec220 0000000b c091ee08 c091ee00 00000008 bf000000 ee8ec000 00000000
> [ 36.877330] dc00: 60070113 bf3a11d8 c01b2a04 651b22c4 62633432 20343030 64343265 34313064
> [ 36.885500] dc20: 32356520 30306564 38652034 30346462 28203030 30393565 63643136 ee002029
> [ 36.893669] dc40: c011e11c 00040902 c0921514 000001dc ee8eddc0 00000005 00000000 00000000
> [ 36.901839] dc60: ee8ec000 c9bf6800 ee8edc8c ee8edc78 c0123850 c010f328 ee8eddc0 000001dc
> [ 36.910009] dc80: ee8edce4 ee8edc90 c07f98ac c01237e8 00000010 ee8edca0 c0408a8c c0d33320
> [ 36.918179] dca0: eeeaa228 ee8edd0c ee8edd10 0000000e 00000000 eeeaa260 ee8edcec 00000005
> [ 36.926349] dcc0: 00000005 c0c0aba4 000001dc ee8eddc0 ee8ec000 c9bf6800 ee8edd04 ee8edce8
> [ 36.934519] dce0: c07f9b4c c07f96bc c0c0414c 00000005 c0c0aba4 000001dc ee8eddbc ee8edd08
> [ 36.942689] dd00: c010128c c07f9a9c c0183948 c0188f9c ee8ac140 c0cf5100 ef6d5178 00000001
> [ 36.950859] dd20: ee8eddc4 ee8edd30 c0188f9c c018743c 00000000 c01c8524 ee8edd74 ee8edd48
> [ 36.959028] dd40: c01c8524 c01c84b0 ef6d1500 eeeaa270 ee8edd74 ee8edd60 ee8ac140 c01c8408
> [ 36.967197] dd60: eeeaa270 00000400 00000000 ee8edd78 00000000 00000001 637cfae5 00000008
> [ 36.975367] dd80: 0000004b 00000000 40070093 00040902 ee8ede3c 00040902 bf3a11d4 80070013
> [ 36.983537] dda0: ffffffff ee8eddf4 c9bf6890 ee8ec000 ee8ede4c ee8eddc0 c07f8db8 c010123c
> [ 36.991707] ddc0: 00000000 c9bf6800 00200000 00000000 00000004 00000000 c9bf6898 00000000
> [ 36.999877] dde0: c9bf6890 00000000 c9bf6800 ee8ede4c ee8ede50 ee8ede10 bf3adf20 bf3a11d4
> [ 37.008046] de00: 80070013 ffffffff 00000051 00000000 ee8ede94 ee8ede20 c0191798 c01c707c
> [ 37.016215] de20: 00000000 00000004 00000000 c9bf6898 00000000 c9bf6890 00000000 c9bf6800
> [ 37.024385] de40: ee8eded4 ee8ede50 bf3adf20 bf3a11c8 00000002 c0114780 ee956018 ee8ac0c0
> [ 37.032555] de60: 00000000 ee8f7880 ee8ac0c0 ee8f7880 ef6d5140 00000000 eeb3c1c0 ee8ac0c0
> [ 37.040724] de80: c0bfa140 c0c05408 ee8edefc c9c23ac4 c07f3e5c c01787b8 00000000 00000000
> [ 37.048894] dea0: 00000000 c0168f68 ee8eded4 c9c23ac4 ee89e400 ee8a9800 00000000 ee8ad700
> [ 37.057064] dec0: c0ce3334 ee8ad705 ee8edf14 ee8eded8 c0169170 bf3ada48 ee8a9800 00000088
> [ 37.065234] dee0: c0c03d00 00000000 ee8ec000 ee8a9800 ee89e418 00000088 c0c03d00 ee8a9818
> [ 37.073403] df00: ee8ec000 ee89e400 ee8edf5c ee8edf18 c0169ff8 c0168fec ee8edf3c c0934934
> [ 37.081573] df20: 00000000 ee8a9990 ee8ec000 c0c4614e 00000000 00000000 ee8a8d40 ee89e400
> [ 37.089743] df40: c0169f98 00000000 00000000 00000000 ee8edfac ee8edf60 c016f94c c0169fa4
> [ 37.097913] df60: 00000000 ee8a8d40 ee89e400 00000000 00000000 ee8edf74 ee8edf74 00000001
> [ 37.106082] df80: 00010001 ee8edf84 ee8edf84 00040902 ee8a8d40 c016f850 00000000 00000000
> [ 37.114252] dfa0: 00000000 ee8edfb0 c010a2f8 c016f85c 00000000 00000000 00000000 00000000
> [ 37.122420] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 37.130590] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 19238001 83218006
> [ 37.138778] [<c01705fc>] (kthread_data) from [<c016a578>] (wq_worker_sleeping+0x18/0xe0)
> [ 37.146864] [<c016a578>] (wq_worker_sleeping) from [<c07f40a4>] (__schedule+0x58c/0x8a8)
> [ 37.154955] [<c07f40a4>] (__schedule) from [<c017e120>] (do_task_dead+0x98/0x9c)
> [ 37.162351] [<c017e120>] (do_task_dead) from [<c01525c8>] (do_exit+0x770/0xadc)
> [ 37.169660] [<c01525c8>] (do_exit) from [<c010f7d0>] (die+0x4b4/0x4d4)
> [ 37.176190] [<c010f7d0>] (die) from [<c0123850>] (__do_kernel_fault.part.0+0x74/0x1f4)
> [ 37.184106] [<c0123850>] (__do_kernel_fault.part.0) from [<c07f98ac>] (do_page_fault+0x1fc/0x3e0)
> [ 37.192973] [<c07f98ac>] (do_page_fault) from [<c07f9b4c>] (do_translation_fault+0xbc/0xc0)
> [ 37.201320] [<c07f9b4c>] (do_translation_fault) from [<c010128c>] (do_DataAbort+0x5c/0xec)
> [ 37.209582] [<c010128c>] (do_DataAbort) from [<c07f8db8>] (__dabt_svc+0x58/0x80)
> [ 37.216967] Exception stack(0xee8eddc0 to 0xee8ede08)
> [ 37.222016] ddc0: 00000000 c9bf6800 00200000 00000000 00000004 00000000 c9bf6898 00000000
> [ 37.230185] dde0: c9bf6890 00000000 c9bf6800 ee8ede4c ee8ede50 ee8ede10 bf3adf20 bf3a11d4
> [ 37.238350] de00: 80070013 ffffffff
> [ 37.242167] [<c07f8db8>] (__dabt_svc) from [<bf3a11d4>] (can_overcommit.part.7+0x18/0x174 [btrfs])
> [ 37.251414] [<bf3a11d4>] (can_overcommit.part.7 [btrfs]) from [<bf3adf20>] (btrfs_async_reclaim_metadata_space+0x4e4/0x884 [btrfs])
> [ 37.263364] [<bf3adf20>] (btrfs_async_reclaim_metadata_space [btrfs]) from [<c0169170>] (process_one_work+0x190/0x49c)
> [ 37.274054] [<c0169170>] (process_one_work) from [<c0169ff8>] (worker_thread+0x60/0x538)
> [ 37.282143] [<c0169ff8>] (worker_thread) from [<c016f94c>] (kthread+0xfc/0x114)
> [ 37.289454] [<c016f94c>] (kthread) from [<c010a2f8>] (ret_from_fork+0x14/0x3c)
> [ 37.296674] Code: e24cb004 e52de004 e8bd4000 e59033fc (e5130014)
> [ 37.302765] ---[ end trace 692c04410689c7f3 ]---
> [ 37.307379] Fixing recursive fault but reboot is needed!
> [ 57.628778] INFO: rcu_sched self-detected stall on CPU
> [ 57.633944] 0-...: (4199 ticks this GP) idle=d75/140000000000001/0 softirq=4233/4233 fqs=1
> [ 57.642369] (t=4200 jiffies g=1102 c=1101 q=133)
> [ 57.647171] rcu_sched kthread starved for 4198 jiffies! g1102 c1101 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1
> [ 57.656550] rcu_sched S 0 7 2 0x00000000
> [ 57.662062] [<c07f3e58>] (__schedule) from [<c07f4410>] (schedule+0x50/0xa8)
> [ 57.669111] [<c07f4410>] (schedule) from [<c07f7834>] (schedule_timeout+0x1f8/0x3c0)
> [ 57.676856] [<c07f7834>] (schedule_timeout) from [<c01c3fa0>] (rcu_gp_kthread+0x574/0x908)
> [ 57.685118] [<c01c3fa0>] (rcu_gp_kthread) from [<c016f94c>] (kthread+0xfc/0x114)
> [ 57.692513] [<c016f94c>] (kthread) from [<c010a2f8>] (ret_from_fork+0x14/0x3c)
> [ 57.699735] Task dump for CPU 0:
> [ 57.702959] mount R running task 0 307 1 0x00000002
> [ 57.710038] [<c0115108>] (unwind_backtrace) from [<c010f318>] (show_stack+0x20/0x24)
> [ 57.717778] [<c010f318>] (show_stack) from [<c017f6a4>] (sched_show_task+0xb8/0x10c)
> [ 57.725519] [<c017f6a4>] (sched_show_task) from [<c01822c0>] (dump_cpu_task+0x48/0x4c)
> [ 57.733435] [<c01822c0>] (dump_cpu_task) from [<c026dd54>] (rcu_dump_cpu_stacks+0xb8/0xd4)
> [ 57.741697] [<c026dd54>] (rcu_dump_cpu_stacks) from [<c01c4f0c>] (rcu_check_callbacks+0x82c/0x990)
> [ 57.750652] [<c01c4f0c>] (rcu_check_callbacks) from [<c01cb420>] (update_process_times+0x44/0x6c)
> [ 57.759523] [<c01cb420>] (update_process_times) from [<c01df698>] (tick_sched_handle+0x64/0x70)
> [ 57.768217] [<c01df698>] (tick_sched_handle) from [<c01df70c>] (tick_sched_timer+0x68/0xbc)
> [ 57.776564] [<c01df70c>] (tick_sched_timer) from [<c01cc9e8>] (__hrtimer_run_queues+0x1b4/0x394)
> [ 57.785344] [<c01cc9e8>] (__hrtimer_run_queues) from [<c01cce1c>] (hrtimer_interrupt+0xd4/0x240)
> [ 57.794126] [<c01cce1c>] (hrtimer_interrupt) from [<c06a12a0>] (arch_timer_handler_phys+0x40/0x48)
> [ 57.803084] [<c06a12a0>] (arch_timer_handler_phys) from [<c01b9560>] (handle_percpu_devid_irq+0x98/0x24c)
> [ 57.812648] [<c01b9560>] (handle_percpu_devid_irq) from [<c01b3b98>] (generic_handle_irq+0x34/0x44)
> [ 57.821688] [<c01b3b98>] (generic_handle_irq) from [<c01b41a8>] (__handle_domain_irq+0x6c/0xc4)
> [ 57.830380] [<c01b41a8>] (__handle_domain_irq) from [<c01017d0>] (gic_handle_irq+0x64/0xa8)
> [ 57.838728] [<c01017d0>] (gic_handle_irq) from [<c07f8e4c>] (__irq_svc+0x6c/0x90)
> [ 57.846200] Exception stack(0xed99f8e8 to 0xed99f930)
> [ 57.851250] f8e0: c9bf6800 00000000 00000392 00000391 c9bf6800 c9c23110
> [ 57.859420] f900: 00080000 00000000 00080000 00000000 c0c0414c ed99f944 ed99f948 ed99f938
> [ 57.867586] f920: bf3ae304 c07f86c0 800e0013 ffffffff
> [ 57.872641] [<c07f8e4c>] (__irq_svc) from [<c07f86c0>] (_raw_spin_lock+0x40/0x54)
> [ 57.880312] [<c07f86c0>] (_raw_spin_lock) from [<bf3ae304>] (reserve_metadata_bytes+0x44/0x1138 [btrfs])
> [ 57.890044] [<bf3ae304>] (reserve_metadata_bytes [btrfs]) from [<bf3af428>] (btrfs_block_rsv_add.part.11+0x30/0x5c [btrfs])
> [ 57.901404] [<bf3af428>] (btrfs_block_rsv_add.part.11 [btrfs]) from [<bf3af484>] (btrfs_block_rsv_add+0x30/0x38 [btrfs])
> [ 57.912501] [<bf3af484>] (btrfs_block_rsv_add [btrfs]) from [<bf3c6308>] (start_transaction+0x308/0x4d0 [btrfs])
> [ 57.922906] [<bf3c6308>] (start_transaction [btrfs]) from [<bf3c64f0>] (btrfs_start_transaction+0x20/0x24 [btrfs])
> [ 57.933482] [<bf3c64f0>] (btrfs_start_transaction [btrfs]) from [<bf3d3880>] (btrfs_truncate+0x90/0x2b4 [btrfs])
> [ 57.943886] [<bf3d3880>] (btrfs_truncate [btrfs]) from [<bf3d5878>] (btrfs_orphan_cleanup+0x2d0/0x644 [btrfs])
> [ 57.954114] [<bf3d5878>] (btrfs_orphan_cleanup [btrfs]) from [<bf3be140>] (btrfs_cleanup_fs_roots+0x13c/0x1bc [btrfs])
> [ 57.965037] [<bf3be140>] (btrfs_cleanup_fs_roots [btrfs]) from [<bf3c2580>] (open_ctree+0x1e44/0x2378 [btrfs])
> [ 57.975263] [<bf3c2580>] (open_ctree [btrfs]) from [<bf3906a8>] (btrfs_mount+0xecc/0xf9c [btrfs])
> [ 57.984252] [<bf3906a8>] (btrfs_mount [btrfs]) from [<c02dfe38>] (mount_fs+0x54/0x16c)
> [ 57.992172] [<c02dfe38>] (mount_fs) from [<c02fefd8>] (vfs_kern_mount+0x58/0x104)
> [ 57.999773] [<c02fefd8>] (vfs_kern_mount) from [<bf38faec>] (btrfs_mount+0x310/0xf9c [btrfs])
> [ 58.008412] [<bf38faec>] (btrfs_mount [btrfs]) from [<c02dfe38>] (mount_fs+0x54/0x16c)
> [ 58.016327] [<c02dfe38>] (mount_fs) from [<c02fefd8>] (vfs_kern_mount+0x58/0x104)
> [ 58.023809] [<c02fefd8>] (vfs_kern_mount) from [<c03022f4>] (do_mount+0x1bc/0xc54)
> [ 58.031374] [<c03022f4>] (do_mount) from [<c0303138>] (SyS_mount+0x9c/0xc4)
> [ 58.038335] [<c0303138>] (SyS_mount) from [<c010a240>] (ret_fast_syscall+0x0/0x3c)
> [ 84.073780] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [mount:307]
> [ 84.080914] Modules linked in: arc4 ath9k_htc ath9k_common ath9k_hw rt2800usb rt2x00usb rt2800lib ath rt2x00lib mac80211 cfg80211 crc_ccitt rfkill usbhid hid mcs7830 usbnet mii evdev ext4 sun4i_codec crc16 jbd2 fscrypto ecb mbcache snd_soc_core snd_pcm_dmaengine snd_pcm axp20x_usb_power snd_timer axp20x_pek ir_lirc_codec lirc_dev snd soundcore sunxi_cir sun4i_ts nvmem_sunxi_sid nvmem_core sunxi_wdt sg spi_sun4i sun4i_ss des_generic leds_gpio cpufreq_dt ip_tables x_tables autofs4 btrfs crc32c_generic xor zlib_deflate raid6_pq sd_mod axp20x_regulator realtek ahci_sunxi libahci_platform libahci sunxi ohci_platform phy_generic libata dwmac_sunxi stmmac_platform ohci_hcd musb_hdrc ehci_platform stmmac udc_core ehci_hcd i2c_mv64xxx scsi_mod usbcore phy_sun4i_usb extcon_core sunxi_mmc usb_common
> [ 84.151649] CPU: 0 PID: 307 Comm: mount Tainted: G D 4.9.0-1-armmp #1 Debian 4.9.2-2
> [ 84.160505] Hardware name: Allwinner sun7i (A20) Family
> [ 84.165724] task: c9df87c0 task.stack: ed99e000
> [ 84.170258] PC is at _raw_spin_lock+0x40/0x54
> [ 84.174779] LR is at reserve_metadata_bytes+0x44/0x1138 [btrfs]
> [ 84.180692] pc : [<c07f86c0>] lr : [<bf3ae304>] psr: 800e0013
> [ 84.180692] sp : ed99f938 ip : ed99f948 fp : ed99f944
> [ 84.192153] r10: c0c0414c r9 : 00000000 r8 : 00080000
> [ 84.197371] r7 : 00000000 r6 : 00080000 r5 : c9c23110 r4 : c9bf6800
> [ 84.203889] r3 : 00000391 r2 : 00000392 r1 : 00000000 r0 : c9bf6800
> [ 84.210408] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
> [ 84.217534] Control: 10c5387d Table: 49e4406a DAC: 00000051
> [ 84.223275] CPU: 0 PID: 307 Comm: mount Tainted: G D 4.9.0-1-armmp #1 Debian 4.9.2-2
> [ 84.232132] Hardware name: Allwinner sun7i (A20) Family
> [ 84.237370] [<c0115108>] (unwind_backtrace) from [<c010f318>] (show_stack+0x20/0x24)
> [ 84.245116] [<c010f318>] (show_stack) from [<c040e23c>] (dump_stack+0x90/0xa4)
> [ 84.252338] [<c040e23c>] (dump_stack) from [<c010b0a4>] (show_regs+0x1c/0x20)
> [ 84.259473] [<c010b0a4>] (show_regs) from [<c02116d0>] (watchdog_timer_fn+0x248/0x2b8)
> [ 84.267389] [<c02116d0>] (watchdog_timer_fn) from [<c01cc9e8>] (__hrtimer_run_queues+0x1b4/0x394)
> [ 84.276255] [<c01cc9e8>] (__hrtimer_run_queues) from [<c01cce1c>] (hrtimer_interrupt+0xd4/0x240)
> [ 84.285036] [<c01cce1c>] (hrtimer_interrupt) from [<c06a12a0>] (arch_timer_handler_phys+0x40/0x48)
> [ 84.293993] [<c06a12a0>] (arch_timer_handler_phys) from [<c01b9560>] (handle_percpu_devid_irq+0x98/0x24c)
> [ 84.303557] [<c01b9560>] (handle_percpu_devid_irq) from [<c01b3b98>] (generic_handle_irq+0x34/0x44)
> [ 84.312597] [<c01b3b98>] (generic_handle_irq) from [<c01b41a8>] (__handle_domain_irq+0x6c/0xc4)
> [ 84.321289] [<c01b41a8>] (__handle_domain_irq) from [<c01017d0>] (gic_handle_irq+0x64/0xa8)
> [ 84.329637] [<c01017d0>] (gic_handle_irq) from [<c07f8e4c>] (__irq_svc+0x6c/0x90)
> [ 84.337108] Exception stack(0xed99f8e8 to 0xed99f930)
> [ 84.342156] f8e0: c9bf6800 00000000 00000392 00000391 c9bf6800 c9c23110
> [ 84.350325] f900: 00080000 00000000 00080000 00000000 c0c0414c ed99f944 ed99f948 ed99f938
> [ 84.358491] f920: bf3ae304 c07f86c0 800e0013 ffffffff
> [ 84.363547] [<c07f8e4c>] (__irq_svc) from [<c07f86c0>] (_raw_spin_lock+0x40/0x54)
> [ 84.371174] [<c07f86c0>] (_raw_spin_lock) from [<bf3ae304>] (reserve_metadata_bytes+0x44/0x1138 [btrfs])
> [ 84.380896] [<bf3ae304>] (reserve_metadata_bytes [btrfs]) from [<bf3af428>] (btrfs_block_rsv_add.part.11+0x30/0x5c [btrfs])
> [ 84.392253] [<bf3af428>] (btrfs_block_rsv_add.part.11 [btrfs]) from [<bf3af484>] (btrfs_block_rsv_add+0x30/0x38 [btrfs])
> [ 84.403348] [<bf3af484>] (btrfs_block_rsv_add [btrfs]) from [<bf3c6308>] (start_transaction+0x308/0x4d0 [btrfs])
> [ 84.413750] [<bf3c6308>] (start_transaction [btrfs]) from [<bf3c64f0>] (btrfs_start_transaction+0x20/0x24 [btrfs])
> [ 84.424325] [<bf3c64f0>] (btrfs_start_transaction [btrfs]) from [<bf3d3880>] (btrfs_truncate+0x90/0x2b4 [btrfs])
> [ 84.434727] [<bf3d3880>] (btrfs_truncate [btrfs]) from [<bf3d5878>] (btrfs_orphan_cleanup+0x2d0/0x644 [btrfs])
> [ 84.444956] [<bf3d5878>] (btrfs_orphan_cleanup [btrfs]) from [<bf3be140>] (btrfs_cleanup_fs_roots+0x13c/0x1bc [btrfs])
> [ 84.455877] [<bf3be140>] (btrfs_cleanup_fs_roots [btrfs]) from [<bf3c2580>] (open_ctree+0x1e44/0x2378 [btrfs])
> [ 84.466103] [<bf3c2580>] (open_ctree [btrfs]) from [<bf3906a8>] (btrfs_mount+0xecc/0xf9c [btrfs])
> [ 84.475090] [<bf3906a8>] (btrfs_mount [btrfs]) from [<c02dfe38>] (mount_fs+0x54/0x16c)
> [ 84.483008] [<c02dfe38>] (mount_fs) from [<c02fefd8>] (vfs_kern_mount+0x58/0x104)
> [ 84.490606] [<c02fefd8>] (vfs_kern_mount) from [<bf38faec>] (btrfs_mount+0x310/0xf9c [btrfs])
> [ 84.499243] [<bf38faec>] (btrfs_mount [btrfs]) from [<c02dfe38>] (mount_fs+0x54/0x16c)
> [ 84.507157] [<c02dfe38>] (mount_fs) from [<c02fefd8>] (vfs_kern_mount+0x58/0x104)
> [ 84.514637] [<c02fefd8>] (vfs_kern_mount) from [<c03022f4>] (do_mount+0x1bc/0xc54)
> [ 84.522202] [<c03022f4>] (do_mount) from [<c0303138>] (SyS_mount+0x9c/0xc4)
> [ 84.529164] [<c0303138>] (SyS_mount) from [<c010a240>] (ret_fast_syscall+0x0/0x3c)
>
> regards,
> Marc
> --
> Pengutronix e.K. | Marc Kleine-Budde |
> Industrial Linux Solutions | Phone: +49-231-2826-924 |
> Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
> Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
>
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