From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Weinberger Date: Wed, 25 Sep 2013 13:10:57 +0200 Subject: [U-Boot] BUG: fastmap and u-boot's ubi write command In-Reply-To: <5242C213.3080808@gmail.com> References: <5242C213.3080808@gmail.com> Message-ID: <5242C4C1.2030401@nod.at> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi! Am 25.09.2013 12:59, schrieb Richard Genoud: > > [CC u-boot ML since it may not be a kernel only related bug(s)] > > Hi Richard, Artem, > > I'm still playing with fastmap and I ran into something. > It's involving u-boot's "ubi write" command and fastmap. > What I'm doing is: > - Flashing a mtd partition with a userspace.ubi image via u-boot > - Booting linux one or to times > - Flashing the UBI volume rootfs with a rootfs.ubifs image via u-boot > - Booting linux one or to times. > > And, depending on fastmap not compiled/disable/auto I've got an ubi_assert that fails and a slowpath warning. > > Here's the story: > U-Boot 2013.07 > Kernel 3.11.1 Before we waste time, please ensure that you have all recent UBI fixes applied. UBI: Fix PEB leak in wear_leveling_worker() (Merged into 3.12-rc1, on it's way to -stable) UBI: Fix invalidate_fastmap() (Merged into 3.12-rc1) UBI: Fix refill_wl_user_pool() (Pending, http://lkml.org/lkml/2013/8/26/121) > NAND: > - 128KiB PEB > - 2KiB page > - 2048 PEB > - no subpage > mapping is: > 0x000000000000-0x000000020000 : "dtb" (128KiB) > 0x000000020000-0x000000a00000 : "Kernel" (9.875KiB) > 0x000000a00000-0x00000ff80000 : "UBI" (245.5 KiB) > 0x00000ff80000-0x000010000000 : "BBT" (512KiB) > > 1- With Fastmap NOT compiled > - Flashing the UBI mtd partition under u-boot: >> fatload usb 0 0x20008000 /userspace.ubi >> nand device ubi >> nand erase.part ubi > NAND erase.part: device 0 offset 0xa00000, size 0xf580000 > OK >> nand write.trimffs 0x20008000 ubi 35a0000 > NAND write: device 0 offset 0xa00000, size 0x35a0000 > 56229888 bytes written: OK > Booting a non-FASTMAP kernel: > [...] > [ 0.789062] UBI: attaching mtd2 to ubi0 > [ 1.351562] UBI: scanning is finished > [ 1.367187] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.375000] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.382812] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.390625] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.398437] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.398437] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.406250] UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 891983656 > [ 1.414062] UBI: available PEBs: 2, total reserved PEBs: 1962, PEBs reserved for bad PEB handling: 40 > [ 1.421875] UBI: background thread "ubi_bgt0d" started, PID 354 > [ 1.437500] UBIFS: background thread "ubifs_bgt0_0" started, PID 356 > [ 1.523437] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 1.523437] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 1.531250] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 1.539062] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 1.546875] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > > => OK > > Now, under u-boot, flashing only the ubi volume "rootfs": >> fatload usb 0 0x20008000 /rootfs.ubifs > 54218752 bytes read in 3259 ms (15.9 MiB/s) >> ubi part ubi > UBI: attaching mtd1 to ubi0 > UBI: physical eraseblock size: 131072 bytes (128 KiB) > UBI: logical eraseblock size: 126976 bytes > UBI: smallest flash I/O unit: 2048 > UBI: VID header offset: 2048 (aligned 2048) > UBI: data offset: 4096 > UBI: attached mtd1 to ubi0 > UBI: MTD device name: "mtd=2" > UBI: MTD device size: 245 MiB > UBI: number of good PEBs: 1964 > UBI: number of bad PEBs: 0 > UBI: max. allowed volumes: 128 > UBI: wear-leveling threshold: 4096 > UBI: number of internal volumes: 1 > UBI: number of user volumes: 3 > UBI: available PEBs: 23 > UBI: total number of reserved PEBs: 1941 > UBI: number of PEBs reserved for bad PEB handling: 19 > UBI: max/mean erase counter: 2/0 >> ubi write 0x20008000 rootfs 33b5000 > 54218752 bytes written to volume rootfs > > Booting the same kernel: > [ 0.812500] UBI: attaching mtd2 to ubi0 > [ 1.664062] UBI: scanning is finished > [ 1.687500] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.687500] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.695312] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.703125] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.710937] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.718750] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.718750] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656 > [ 1.726562] UBI: available PEBs: 2, total reserved PEBs: 1962, PEBs reserved for bad PEB handling: 40 > [ 1.734375] UBI: background thread "ubi_bgt0d" started, PID 354 > [ 1.750000] UBIFS: background thread "ubifs_bgt0_0" started, PID 356 > [ 1.789062] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 1.796875] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 1.804687] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 1.812500] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 1.812500] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > > => all OK > > 2- With Fastmap compiled and ubi.fm_autoconvert=0 > - Flashing the UBI mtd partition under u-boot: >> fatload usb 0 0x20008000 /userspace.ubi >> nand device ubi >> nand erase.part ubi > NAND erase.part: device 0 offset 0xa00000, size 0xf580000 > OK >> nand write.trimffs 0x20008000 ubi 35a0000 > NAND write: device 0 offset 0xa00000, size 0x35a0000 > 56229888 bytes written: OK > Booting a FASTMAP kernel: > [...] > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 1.289062] UBI: scanning is finished > [ 1.304687] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.312500] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.320312] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.328125] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.328125] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.335937] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.343750] UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 891983656 > [ 1.351562] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.359375] UBI: background thread "ubi_bgt0d" started, PID 355 > [ 1.453125] UBIFS: background thread "ubifs_bgt0_0" started, PID 357 > [ 1.515625] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 1.515625] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 1.523437] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 1.531250] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 1.539062] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > => OK > > > Rebooting: : > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 1.578125] UBI: scanning is finished > [ 1.601562] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.609375] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.617187] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.617187] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.625000] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.632812] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.640625] UBI: max/mean erase counter: 2/0, WL threshold: 4096, image sequence number: 891983656 > [ 1.648437] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.656250] UBI: background thread "ubi_bgt0d" started, PID 355 > > Still ok. > > Now, under u-boot, flashing only the ubi volume "rootfs": >> fatload usb 0 0x20008000 /rootfs.ubifs > 54218752 bytes read in 3259 ms (15.9 MiB/s) >> ubi part ubi > UBI: attaching mtd1 to ubi0 > UBI: physical eraseblock size: 131072 bytes (128 KiB) > UBI: logical eraseblock size: 126976 bytes > UBI: smallest flash I/O unit: 2048 > UBI: VID header offset: 2048 (aligned 2048) > UBI: data offset: 4096 > UBI: attached mtd1 to ubi0 > UBI: MTD device name: "mtd=2" > UBI: MTD device size: 245 MiB > UBI: number of good PEBs: 1964 > UBI: number of bad PEBs: 0 > UBI: max. allowed volumes: 128 > UBI: wear-leveling threshold: 4096 > UBI: number of internal volumes: 1 > UBI: number of user volumes: 3 > UBI: available PEBs: 23 > UBI: total number of reserved PEBs: 1941 > UBI: number of PEBs reserved for bad PEB handling: 19 > UBI: max/mean erase counter: 2/0 >> ubi write 0x20008000 rootfs 33b5000 > 54218752 bytes written to volume rootfs > > Booting the same kernel: > [ 0.804687] UBI: default fastmap pool size: 95 > [ 0.812500] UBI: default fastmap WL pool size: 25 > [ 0.812500] UBI: attaching mtd2 to ubi0 > [ 1.570312] UBI: scanning is finished > [ 1.593750] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.601562] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.609375] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.609375] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.617187] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.625000] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.632812] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656 > [ 1.640625] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.648437] UBI: background thread "ubi_bgt0d" started, PID 355 > [ 1.664062] UBIFS: background thread "ubifs_bgt0_0" started, PID 357 > [ 1.703125] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 1.710937] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 1.718750] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 1.726562] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 1.734375] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > => All OK (I rebooted one or two times, no problem showing up) > > Now, booting with ubi.fm_autoconvert=1: > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 1.578125] UBI: scanning is finished > [ 1.601562] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.609375] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.609375] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.617187] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.625000] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.632812] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.640625] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656 > [ 1.648437] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.656250] UBI: background thread "ubi_bgt0d" started, PID 355 > [ 1.671875] UBIFS: background thread "ubifs_bgt0_0" started, PID 357 > [ 1.710937] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 1.718750] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 1.726562] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 1.734375] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 1.742187] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > => Still OK > Rebooting again with ubi.fm_autoconvert=1: > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 0.851562] UBI error: ubi_scan_fastmap: Attach by fastmap failed, doing a full scan! This is not the top most error. Do you have to full log? Would be nice to know why fastmap has fallen back to a full scan. > [ 1.593750] UBI: scanning is finished > [ 1.601562] UBI assert failed in ubi_wl_init at 1967 (pid 1) > [ 1.609375] CPU: 0 PID: 1 Comm: swapper Not tainted 3.11.1 #5 > [ 1.617187] [] (unwind_backtrace+0x0/0xe0) from [] (show_stack+0x10/0x14) > [ 1.625000] [] (show_stack+0x10/0x14) from [] (ubi_wl_init+0x3d0/0x4b8) > [ 1.632812] [] (ubi_wl_init+0x3d0/0x4b8) from [] (ubi_attach+0x270/0x34c) > [ 1.640625] [] (ubi_attach+0x270/0x34c) from [] (ubi_attach_mtd_dev+0x2b8/0x86c) > [ 1.648437] [] (ubi_attach_mtd_dev+0x2b8/0x86c) from [] (ubi_init+0x1d8/0x29c) > [ 1.656250] [] (ubi_init+0x1d8/0x29c) from [] (do_one_initcall+0x94/0x144) > [ 1.664062] [] (do_one_initcall+0x94/0x144) from [] (kernel_init_freeable+0xe8/0x1ac) > [ 1.671875] [] (kernel_init_freeable+0xe8/0x1ac) from [] (kernel_init+0x8/0xe4) > [ 1.679687] [] (kernel_init+0x8/0xe4) from [] (ret_from_fork+0x14/0x24) > [ 1.695312] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.703125] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.703125] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.710937] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.718750] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.726562] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.726562] UBI: max/mean erase counter: 3/1, WL threshold: 4096, image sequence number: 891983656 > [ 1.734375] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.742187] UBI: background thread "ubi_bgt0d" started, PID 355 > [ 1.757812] UBIFS: background thread "ubifs_bgt0_0" started, PID 357 > [ 1.796875] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 1.804687] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 1.812500] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 1.820312] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 1.820312] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > [ 1.828125] VFS: Mounted root (ubifs filesystem) on device 0:11. > [ 1.835937] devtmpfs: mounted > [ 1.835937] Freeing unused kernel memory: 112K (c0335000 - c0351000) > [ 2.187500] UBI error: ubi_update_fastmap: could not find any anchor PEB > [ 2.195312] UBI warning: ubi_update_fastmap: Unable to write new fastmap, err=-28 > => If I reboot again, I still have those error messages. > > > 3- With Fastmap compiled and ubi.fm_autoconvert=1 > - Flashing the UBI mtd partition under u-boot: >> fatload usb 0 0x20008000 /userspace.ubi >> nand device ubi >> nand erase.part ubi > NAND erase.part: device 0 offset 0xa00000, size 0xf580000 > OK >> nand write.trimffs 0x20008000 ubi 35a0000 > NAND write: device 0 offset 0xa00000, size 0x35a0000 > 56229888 bytes written: OK > Booting a FASTMAP kernel with ubi.fm_autoconvert=1: > [...] > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 1.289062] UBI: scanning is finished > [ 1.304687] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.312500] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.320312] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.328125] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.328125] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.335937] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.343750] UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 891983656 > [ 1.351562] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.359375] UBI: background thread "ubi_bgt0d" started, PID 355 > [ 1.437500] UBI error: ubi_update_fastmap: could not find any anchor PEB > [ 1.445312] UBI warning: ubi_update_fastmap: Unable to write new fastmap, err=-28 > =>OK > > Rebooting 2 times to let FASTMAP show its power: > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 0.929687] UBI: attached by fastmap > [ 0.937500] UBI: fastmap pool size: 95 > [ 0.937500] UBI: fastmap WL pool size: 25 > [ 0.960937] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > GREAT ! > > Now, under u-boot, flashing only the ubi volume "rootfs": >> fatload usb 0 0x20008000 /rootfs.ubifs > 54218752 bytes read in 3259 ms (15.9 MiB/s) >> ubi part ubi > UBI: attaching mtd1 to ubi0 > UBI: physical eraseblock size: 131072 bytes (128 KiB) > UBI: logical eraseblock size: 126976 bytes > UBI: smallest flash I/O unit: 2048 > UBI: VID header offset: 2048 (aligned 2048) > UBI: data offset: 4096 > UBI: "delete" compatible internal volume 2147479552:0 found, remove it > UBI: attached mtd1 to ubi0 > UBI: MTD device name: "mtd=2" > UBI: MTD device size: 245 MiB > UBI: number of good PEBs: 1964 > UBI: number of bad PEBs: 0 > UBI: max. allowed volumes: 128 > UBI: wear-leveling threshold: 4096 > UBI: number of internal volumes: 1 > UBI: number of user volumes: 3 > UBI: available PEBs: 23 > UBI: total number of reserved PEBs: 1941 > UBI: number of PEBs reserved for bad PEB handling: 19 > UBI: max/mean erase counter: 2/0 >> ubi write 0x20008000 rootfs 33b5000 > 54218752 bytes written to volume rootfs > > =>FASTMAP internal volume has been erased, which is the expected behaviour. > > Booting the same kernel, still with ubi.fm_autoconvert=1: > [...] > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 1.585937] UBI: scanning is finished > [ 1.601562] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.609375] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.617187] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.625000] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.625000] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.632812] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.640625] UBI: max/mean erase counter: 4/1, WL threshold: 4096, image sequence number: 891983656 > [ 1.648437] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.656250] UBI: background thread "ubi_bgt0d" started, PID 355 > [ 1.703125] UBIFS: background thread "ubifs_bgt0_0" started, PID 357 > [ 1.734375] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 1.742187] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 1.750000] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 1.757812] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 1.765625] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > =>OK this time, let's reboot: > > [ 0.812500] UBI: default fastmap pool size: 95 > [ 0.820312] UBI: default fastmap WL pool size: 25 > [ 0.820312] UBI: attaching mtd2 to ubi0 > [ 0.914062] UBI error: scan_pool: bad image seq: 0x0, expected: 0x352a9728 > [ 0.921875] ------------[ cut here ]------------ > [ 0.929687] WARNING: CPU: 0 PID: 1 at drivers/mtd/ubi/fastmap.c:829 ubi_attach_fastmap+0xd38/0xda0() This bug got most likely fixed by "UBI: Fix PEB leak in wear_leveling_worker()". > [ 0.937500] Modules linked in: > [ 0.937500] CPU: 0 PID: 1 Comm: swapper Not tainted 3.11.1 #5 > [ 0.945312] [] (unwind_backtrace+0x0/0xe0) from [] (show_stack+0x10/0x14) > [ 0.953125] [] (show_stack+0x10/0x14) from [] (warn_slowpath_common+0x60/0x80) > [ 0.960937] [] (warn_slowpath_common+0x60/0x80) from [] (warn_slowpath_null+0x18/0x1c) > [ 0.968750] [] (warn_slowpath_null+0x18/0x1c) from [] (ubi_attach_fastmap+0xd38/0xda0) > [ 0.976562] [] (ubi_attach_fastmap+0xd38/0xda0) from [] (ubi_scan_fastmap+0x5b4/0x7b8) > [ 0.984375] [] (ubi_scan_fastmap+0x5b4/0x7b8) from [] (ubi_attach+0x1c8/0x34c) > [ 0.992187] [] (ubi_attach+0x1c8/0x34c) from [] (ubi_attach_mtd_dev+0x2b8/0x86c) > [ 1.000000] [] (ubi_attach_mtd_dev+0x2b8/0x86c) from [] (ubi_init+0x1d8/0x29c) > [ 1.007812] [] (ubi_init+0x1d8/0x29c) from [] (do_one_initcall+0x94/0x144) > [ 1.015625] [] (do_one_initcall+0x94/0x144) from [] (kernel_init_freeable+0xe8/0x1ac) > [ 1.023437] [] (kernel_init_freeable+0xe8/0x1ac) from [] (kernel_init+0x8/0xe4) > [ 1.031250] [] (kernel_init+0x8/0xe4) from [] (ret_from_fork+0x14/0x24) > [ 1.039062] ---[ end trace 313a7957427257d8 ]--- > [ 1.039062] UBI error: ubi_scan_fastmap: Attach by fastmap failed, doing a full scan! > [ 1.781250] UBI: scanning is finished > [ 1.796875] UBI assert failed in ubi_wl_init at 1967 (pid 1) > [ 1.796875] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.11.1 #5 > [ 1.804687] [] (unwind_backtrace+0x0/0xe0) from [] (show_stack+0x10/0x14) > [ 1.812500] [] (show_stack+0x10/0x14) from [] (ubi_wl_init+0x3d0/0x4b8) > [ 1.820312] [] (ubi_wl_init+0x3d0/0x4b8) from [] (ubi_attach+0x270/0x34c) > [ 1.828125] [] (ubi_attach+0x270/0x34c) from [] (ubi_attach_mtd_dev+0x2b8/0x86c) > [ 1.835937] [] (ubi_attach_mtd_dev+0x2b8/0x86c) from [] (ubi_init+0x1d8/0x29c) > [ 1.843750] [] (ubi_init+0x1d8/0x29c) from [] (do_one_initcall+0x94/0x144) > [ 1.851562] [] (do_one_initcall+0x94/0x144) from [] (kernel_init_freeable+0xe8/0x1ac) > [ 1.859375] [] (kernel_init_freeable+0xe8/0x1ac) from [] (kernel_init+0x8/0xe4) > [ 1.867187] [] (kernel_init+0x8/0xe4) from [] (ret_from_fork+0x14/0x24) > [ 1.882812] UBI: attached mtd2 (name "UBI", size 245 MiB) to ubi0 > [ 1.890625] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes > [ 1.898437] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048 > [ 1.898437] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096 > [ 1.906250] UBI: good PEBs: 1964, bad PEBs: 0, corrupted PEBs: 0 > [ 1.914062] UBI: user volume: 3, internal volumes: 1, max. volumes count: 128 > [ 1.921875] UBI: max/mean erase counter: 4/1, WL threshold: 4096, image sequence number: 891983656 > [ 1.929687] UBI: available PEBs: 0, total reserved PEBs: 1964, PEBs reserved for bad PEB handling: 40 > [ 1.937500] UBI: background thread "ubi_bgt0d" started, PID 355 > [ 1.953125] UBIFS: background thread "ubifs_bgt0_0" started, PID 357 > [ 1.992187] UBIFS: mounted UBI device 0, volume 0, name "rootfs" > [ 2.000000] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes > [ 2.007812] UBIFS: FS size: 63614976 bytes (60 MiB, 501 LEBs), journal size 8634368 bytes (8 MiB, 68 LEBs) > [ 2.015625] UBIFS: reserved for root: 0 bytes (0 KiB) > [ 2.023437] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 47FE5308-55FD-4F1C-BD13-C23AED232326, small LPT model > [ 2.031250] VFS: Mounted root (ubifs filesystem) on device 0:11. > [ 2.039062] devtmpfs: mounted > [ 2.046875] Freeing unused kernel memory: 112K (c0335000 - c0351000) > [ 2.390625] UBI error: ubi_update_fastmap: could not find any anchor PEB > [ 2.398437] UBI warning: ubi_update_fastmap: Unable to write new fastmap, err=-28 Thanks, //richard