This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1878749 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: eoan -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1878749 Title: Kernel bug when running btrfs balance Status in linux package in Ubuntu: Incomplete Bug description: syslog extract: May 15 00:38:28 rpi4 kernel: [ 1464.345380] kernel BUG at /build/linux-raspi2-5.3-5IVhed/linux-raspi2-5.3-5.3.0/fs/btrfs/relocation.c:4729! May 15 00:38:28 rpi4 kernel: [ 1464.355281] Internal error: Oops - BUG: 0 [#1] SMP May 15 00:38:28 rpi4 kernel: [ 1464.360141] Modules linked in: xt_nat iptable_nat dm_crypt nls_ascii algif_skcipher af_alg ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt ipt_REJECT nf_reject_ipv4 xt_comment btsdio nf_log_ipv4 nf_log_common bluetooth bcm2835_v4l2(CE) xt_LOG ecdh_generic bcm2835_mmal_vchiq(CE) ecc vc_sm_cma(CE) xt_multiport v4l2_common xt_recent videobuf2_vmalloc videobuf2_memops brcmfmac videobuf2_v4l2 brcmutil videobuf2_common cfg80211 videodev xt_limit xt_tcpudp raspberrypi_hwmon mc xt_addrtype rpivid_mem spidev uio_pdrv_genirq uio xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 sch_fq_codel nf_defrag_ipv4 iptable_filter bpfilter iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear broadcom bcm_phy_lib hid_generic May 15 00:38:28 rpi4 kernel: [ 1464.360198] usbhid mdio_bcm_unimac crct10dif_ce sdhci_iproc genet gpio_regulator phy_generic fixed uas usb_storage aes_neon_bs aes_neon_blk crypto_simd cryptd aes_arm64 May 15 00:38:28 rpi4 kernel: [ 1464.464074] CPU: 0 PID: 8225 Comm: btrfs-balance Tainted: G C E 5.3.0-1023-raspi2 #25~18.04.1-Ubuntu May 15 00:38:28 rpi4 kernel: [ 1464.474482] Hardware name: Raspberry Pi 4 Model B Rev 1.2 (DT) May 15 00:38:28 rpi4 kernel: [ 1464.480395] pstate: 20400005 (nzCv daif +PAN -UAO) May 15 00:38:28 rpi4 kernel: [ 1464.485330] pc : btrfs_reloc_cow_block+0x34c/0x3a0 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.490928] lr : __btrfs_cow_block+0x368/0x600 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.496133] sp : ffff000013b437b0 May 15 00:38:28 rpi4 kernel: [ 1464.499487] x29: ffff000013b437b0 x28: 0000000000000000 May 15 00:38:28 rpi4 kernel: [ 1464.504870] x27: 0000000000000001 x26: 0000000000000001 May 15 00:38:28 rpi4 kernel: [ 1464.510253] x25: ffff9c0ac32c4a80 x24: ffff9c0bb321c618 May 15 00:38:28 rpi4 kernel: [ 1464.515634] x23: 0000000000000001 x22: ffff9c0b63242a50 May 15 00:38:28 rpi4 kernel: [ 1464.521016] x21: ffff9c0b23e51ef0 x20: ffff9c0b4f111000 May 15 00:38:28 rpi4 kernel: [ 1464.526399] x19: ffff9c0b74bb5000 x18: 0000000000000000 May 15 00:38:28 rpi4 kernel: [ 1464.531780] x17: 0000000000000000 x16: ffff40af26f8be78 May 15 00:38:28 rpi4 kernel: [ 1464.537163] x15: 0000000000000000 x14: 0000000000000000 May 15 00:38:28 rpi4 kernel: [ 1464.542545] x13: 0000000000000000 x12: 0000000000000000 May 15 00:38:28 rpi4 kernel: [ 1464.547926] x11: 0000000000000000 x10: ffff9c0b10e83a40 May 15 00:38:28 rpi4 kernel: [ 1464.553308] x9 : ffff9c0aca004750 x8 : ffff40af2775b9e7 May 15 00:38:28 rpi4 kernel: [ 1464.558690] x7 : ffff9c0b578814e1 x6 : ffff9c0b578814e0 May 15 00:38:28 rpi4 kernel: [ 1464.564071] x5 : ffff9c0b552b59c0 x4 : ffff9c0b552b59c0 May 15 00:38:28 rpi4 kernel: [ 1464.569452] x3 : ffff9c0b63242a50 x2 : 0000000000096be7 May 15 00:38:28 rpi4 kernel: [ 1464.574833] x1 : 0000000000000000 x0 : 0000012e979b4000 May 15 00:38:28 rpi4 kernel: [ 1464.580216] Call trace: May 15 00:38:28 rpi4 kernel: [ 1464.582735] btrfs_reloc_cow_block+0x34c/0x3a0 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.587979] __btrfs_cow_block+0x368/0x600 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.592869] btrfs_cow_block+0x100/0x218 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.597583] btrfs_search_slot+0x560/0x930 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.602475] do_relocation+0x408/0x5b8 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.607014] relocate_tree_blocks+0x4f8/0x5c0 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.612170] relocate_block_group+0x3dc/0x638 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.617325] btrfs_relocate_block_group+0x18c/0x2d8 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.623009] btrfs_relocate_chunk+0x48/0xe0 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.627988] __btrfs_balance+0x864/0xa38 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.632703] btrfs_balance+0x434/0x748 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.637301] balance_kthread+0x38/0x70 [btrfs] May 15 00:38:28 rpi4 kernel: [ 1464.641811] kthread+0x124/0x128 May 15 00:38:28 rpi4 kernel: [ 1464.645081] ret_from_fork+0x10/0x1c May 15 00:38:28 rpi4 kernel: [ 1464.648706] Code: f9401321 eb01001f 54fff020 f9002fbc (d4210000) May 15 00:38:28 rpi4 kernel: [ 1464.654884] ---[ end trace 01ad7c5a4a25131c ]--- May 15 00:38:28 rpi4 kernel: [ 1464.660405] WARNING: CPU: 0 PID: 0 at /build/linux-raspi2-5.3-5IVhed/linux-raspi2-5.3-5.3.0/kernel/rcu/tree.c:562 rcu_idle_enter+0x70/0x78 May 15 00:38:28 rpi4 kernel: [ 1464.673030] Modules linked in: xt_nat iptable_nat dm_crypt nls_ascii algif_skcipher af_alg ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt ipt_REJECT nf_reject_ipv4 xt_comment btsdio nf_log_ipv4 nf_log_common bluetooth bcm2835_v4l2(CE) xt_LOG ecdh_generic bcm2835_mmal_vchiq(CE) ecc vc_sm_cma(CE) xt_multiport v4l2_common xt_recent videobuf2_vmalloc videobuf2_memops brcmfmac videobuf2_v4l2 brcmutil videobuf2_common cfg80211 videodev xt_limit xt_tcpudp raspberrypi_hwmon mc xt_addrtype rpivid_mem spidev uio_pdrv_genirq uio xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 sch_fq_codel nf_defrag_ipv4 iptable_filter bpfilter iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear broadcom bcm_phy_lib hid_generic May 15 00:38:28 rpi4 kernel: [ 1464.673092] usbhid mdio_bcm_unimac crct10dif_ce sdhci_iproc genet gpio_regulator phy_generic fixed uas usb_storage aes_neon_bs aes_neon_blk crypto_simd cryptd aes_arm64 May 15 00:38:28 rpi4 kernel: [ 1464.776998] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G D C E 5.3.0-1023-raspi2 #25~18.04.1-Ubuntu May 15 00:38:28 rpi4 kernel: [ 1464.786799] Hardware name: Raspberry Pi 4 Model B Rev 1.2 (DT) May 15 00:38:28 rpi4 kernel: [ 1464.792721] pstate: 20400085 (nzCv daIf +PAN -UAO) May 15 00:38:28 rpi4 kernel: [ 1464.797586] pc : rcu_idle_enter+0x70/0x78 May 15 00:38:28 rpi4 kernel: [ 1464.801659] lr : do_idle+0x1d4/0x2c0 May 15 00:38:28 rpi4 kernel: [ 1464.805284] sp : ffff40af27c03ec0 May 15 00:38:28 rpi4 kernel: [ 1464.808646] x29: ffff40af27c03ec0 x28: 0000000000bab334 May 15 00:38:28 rpi4 kernel: [ 1464.814039] x27: 0000000000000000 x26: 0000000000000000 May 15 00:38:28 rpi4 kernel: [ 1464.819431] x25: 0000000000000000 x24: ffff40af27c097ec May 15 00:38:28 rpi4 kernel: [ 1464.824822] x23: ffff40af27756f38 x22: ffff40af27c09000 May 15 00:38:28 rpi4 kernel: [ 1464.830213] x21: ffff40af27c09000 x20: 0000000000000001 May 15 00:38:28 rpi4 kernel: [ 1464.835605] x19: ffff40af27c09740 x18: ffff40af272a2fa0 May 15 00:38:28 rpi4 kernel: [ 1464.840996] x17: 0000000000000000 x16: 000000000000000e May 15 00:38:28 rpi4 kernel: [ 1464.846388] x15: 0000000000000001 x14: ffff9c0bb7582148 May 15 00:38:28 rpi4 kernel: [ 1464.851778] x13: 0000000000000004 x12: 0000000000000000 May 15 00:38:28 rpi4 kernel: [ 1464.857168] x11: ffff9c0bb7595430 x10: 0000000000001950 May 15 00:38:28 rpi4 kernel: [ 1464.862560] x9 : ffff40af27c03e00 x8 : ffff40af27c11ff0 May 15 00:38:28 rpi4 kernel: [ 1464.867952] x7 : 0000000000000000 x6 : 0000000000000001 May 15 00:38:28 rpi4 kernel: [ 1464.873342] x5 : 0000000000000000 x4 : ffff40af27c07000 May 15 00:38:28 rpi4 kernel: [ 1464.878733] x3 : 4000000000000002 x2 : ffff40af27759000 May 15 00:38:28 rpi4 kernel: [ 1464.884124] x1 : 4000000000000000 x0 : ffff9c0bb75960c0 May 15 00:38:28 rpi4 kernel: [ 1464.889516] Call trace: May 15 00:38:28 rpi4 kernel: [ 1464.891999] rcu_idle_enter+0x70/0x78 May 15 00:38:28 rpi4 kernel: [ 1464.895717] do_idle+0x1d4/0x2c0 May 15 00:38:28 rpi4 kernel: [ 1464.898994] cpu_startup_entry+0x2c/0x30 May 15 00:38:28 rpi4 kernel: [ 1464.902978] rest_init+0xb8/0xc8 May 15 00:38:28 rpi4 kernel: [ 1464.906255] arch_call_rest_init+0x14/0x1c May 15 00:38:28 rpi4 kernel: [ 1464.910412] start_kernel+0x4f8/0x524 May 15 00:38:28 rpi4 kernel: [ 1464.914128] ---[ end trace 01ad7c5a4a25131d ]--- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1878749/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp