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Bug#1053120: linux-image-6.1.0-12-amd64: Kernel NULL pointer deref with XFS on kernel 6.1

Started bySalvatore Bonaccorso <carnil@debian.org>
First post2023-09-27 21:40 +0200
Last post2023-09-28 06:40 +0200
Articles 3 — 2 participants

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  Bug#1053120: linux-image-6.1.0-12-amd64: Kernel NULL pointer deref with XFS on kernel 6.1 Salvatore Bonaccorso <carnil@debian.org> - 2023-09-27 21:40 +0200
    Bug#1053120: linux-image-6.1.0-12-amd64: Kernel NULL pointer deref with XFS on kernel 6.1 sb56637@gmail.com - 2023-09-27 23:10 +0200
      Bug#1053120: linux-image-6.1.0-12-amd64: Kernel NULL pointer deref with XFS on kernel 6.1 Salvatore Bonaccorso <carnil@debian.org> - 2023-09-28 06:40 +0200

#80544 — Bug#1053120: linux-image-6.1.0-12-amd64: Kernel NULL pointer deref with XFS on kernel 6.1

FromSalvatore Bonaccorso <carnil@debian.org>
Date2023-09-27 21:40 +0200
SubjectBug#1053120: linux-image-6.1.0-12-amd64: Kernel NULL pointer deref with XFS on kernel 6.1
Message-ID<HiIy5-bYk4-11@gated-at.bofh.it>
Hi,

On Wed, Sep 27, 2023 at 01:08:21PM -0500, S. wrote:
> Package: src:linux
> Version: 6.1.52-1
> Severity: important
> X-Debbugs-Cc: wfhnbsq1@duck.com
> 
> Dear Maintainer,
> 
> I have been running Debian 12 on a Hetzner cloud VM since a few weeks before the official Debian 12 Stable release. I did a manual netinstall with an XFS root filesystem. Unfortunately
> I have consistently been having issues approximately every month with kernel crashes that start like this:
> 
> ================================
> Sep 27 00:49:20 myserver kernel: BUG: kernel NULL pointer dereference, address: 00000000000000a2
> Sep 27 00:49:20 myserver kernel: #PF: supervisor read access in kernel mode
> Sep 27 00:49:20 myserver kernel: #PF: error_code(0x0000) - not-present page
> Sep 27 00:49:20 myserver kernel: Oops: 0000 [#1] PREEMPT SMP NOPTI
> Sep 27 00:49:20 myserver kernel: CPU: 3 PID: 2155714 Comm: postmaster Not tainted 6.1.0-12-amd64 #1  Debian 6.1.52-1
> Sep 27 00:49:20 myserver kernel: Hardware name: Hetzner vServer/Standard PC (Q35 + ICH9, 2009), BIOS 20171111 11/11/2017
> Sep 27 00:49:20 myserver kernel: RIP: 0010:next_uptodate_page+0x45/0x1f0
> Sep 27 00:49:20 myserver kernel: Code: 0f 84 2f 01 00 00 48 81 ff 06 04 00 00 0f 84 a3 00 00 00 48 81 ff 02 04 00 00 0f 84 26 01 00 00 40 f6 c7 01 0f 85 8c 00 00 00 <48> 8b 07 a8 01 0f 85 81 00 00 00 8b 47 34 85 c0 74 7a 8d 50 01 4c
> Sep 27 00:49:20 myserver kernel: RSP: 0000:ffffb4de8169bcc0 EFLAGS: 00010246
> Sep 27 00:49:20 myserver kernel: RAX: 00000000000000a2 RBX: ffffb4de8169bd18 RCX: 00000000000003bd
> Sep 27 00:49:20 myserver kernel: RDX: ffffb4de8169bd18 RSI: ffff960758b9c2b0 RDI: 00000000000000a2
> Sep 27 00:49:20 myserver kernel: RBP: ffff960758b9c2b0 R08: 00000000000003bd R09: 00007f6da3ef5fff
> Sep 27 00:49:20 myserver kernel: R10: 00000000000003ae R11: 0000000000000000 R12: 00000000000003bd
> Sep 27 00:49:20 myserver kernel: R13: ffff960600431260 R14: ffff960758b9c2b0 R15: ffff9605dc7bedb0
> Sep 27 00:49:20 myserver kernel: FS:  00007f6e29110a40(0000) GS:ffff96082bf80000(0000) knlGS:0000000000000000
> Sep 27 00:49:20 myserver kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> Sep 27 00:49:20 myserver kernel: CR2: 00000000000000a2 CR3: 000000014a17a000 CR4: 0000000000350ee0
> Sep 27 00:49:20 myserver kernel: Call Trace:
> Sep 27 00:49:20 myserver kernel:  <TASK>
> Sep 27 00:49:20 myserver kernel:  ? __die_body.cold+0x1a/0x1f
> Sep 27 00:49:20 myserver kernel:  ? page_fault_oops+0xd2/0x2b0
> Sep 27 00:49:20 myserver kernel:  ? finish_task_switch.isra.0+0x9b/0x300
> Sep 27 00:49:20 myserver kernel:  ? exc_page_fault+0x70/0x170
> Sep 27 00:49:20 myserver kernel:  ? asm_exc_page_fault+0x22/0x30
> Sep 27 00:49:20 myserver kernel:  ? next_uptodate_page+0x45/0x1f0
> Sep 27 00:49:20 myserver kernel:  filemap_map_pages+0xb0/0x6e0
> Sep 27 00:49:20 myserver kernel:  xfs_filemap_map_pages+0x41/0x60 [xfs]
> Sep 27 00:49:20 myserver kernel:  do_fault+0x1a7/0x410
> Sep 27 00:49:20 myserver kernel:  __handle_mm_fault+0x660/0xfa0
> Sep 27 00:49:20 myserver kernel:  handle_mm_fault+0xdb/0x2d0
> Sep 27 00:49:20 myserver kernel:  do_user_addr_fault+0x19c/0x570
> Sep 27 00:49:20 myserver kernel:  exc_page_fault+0x70/0x170
> Sep 27 00:49:20 myserver kernel:  asm_exc_page_fault+0x22/0x30
> Sep 27 00:49:20 myserver kernel: RIP: 0033:0x7f6e2c752345
> Sep 27 00:49:20 myserver kernel: Code: b4 24 d0 00 00 00 49 89 df 48 89 44 24 38 48 89 fb 4c 89 5c 24 60 eb 12 0f 1f 44 00 00 49 83 c4 04 83 e2 01 0f 85 f2 05 00 00 <41> 8b 04 24 48 89 c2 48 31 d8 48 d1 e8 75 e4 48 83 ec 08 4c 89 e0
> Sep 27 00:49:20 myserver kernel: RSP: 002b:00007ffe0d2f29a0 EFLAGS: 00010206
> Sep 27 00:49:20 myserver kernel: RAX: 00007ffe0d2f2a14 RBX: 0000000033b7606e RCX: 0000000000008003
> Sep 27 00:49:20 myserver kernel: RDX: 00007f6d9f67aff4 RSI: 0000000000000007 RDI: 0000000033b7606e
> Sep 27 00:49:20 myserver kernel: RBP: 0000000000000001 R08: 00007ffe0d2f2ae0 R09: 0000558ffcfe7aa0
> Sep 27 00:49:20 myserver kernel: R10: 00007f6e2b967510 R11: 0000000000000011 R12: 00007f6d9f687fc8
> Sep 27 00:49:20 myserver kernel: R13: 00007f6d9dc6b888 R14: 0000000000000009 R15: 0000558ffcfe7cb0
> Sep 27 00:49:20 myserver kernel:  </TASK>
> Sep 27 00:49:20 myserver kernel: Modules linked in: tcp_bbr ipt_REJECT nf_reject_ipv4 xt_multiport xt_nat xt_tcpudp veth xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables nfnetlink br_netfilter bridge stp llc overlay binfmt_misc intel_rapl_msr intel_rapl_common ghash_clmulni_intel sha512_ssse3 sha512_generic aesni_intel virtio_gpu crypto_simd cryptd virtio_dma_buf pcspkr iTCO_wdt intel_pmc_bxt virtio_console drm_shmem_helper iTCO_vendor_support watchdog virtio_rng virtio_balloon rng_core drm_kms_helper button joydev evdev sg serio_raw drm loop fuse dm_mod efi_pstore configfs qemu_fw_cfg ip_tables x_tables autofs4 xfs libcrc32c crc32c_generic hid_generic usbhid hid sr_mod cdrom sd_mod t10_pi crc64_rocksoft crc64 crc_t10dif crct10dif_generic ahci libahci virtio_net net_failover virtio_scsi xhci_pci failover libata xhci_hcd i2c_i801 i2c_smbus crct10dif_pclmul crct10dif_common scsi_mod psmouse
> Sep 27 00:49:20 myserver kernel:  crc32_pclmul crc32c_intel scsi_common usbcore lpc_ich virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio virtio_ring usb_common
> Sep 27 00:49:20 myserver kernel: CR2: 00000000000000a2
> Sep 27 00:49:20 myserver kernel: ---[ end trace 0000000000000000 ]---
> Sep 27 00:49:20 myserver kernel: RIP: 0010:next_uptodate_page+0x45/0x1f0
> Sep 27 00:49:20 myserver kernel: Code: 0f 84 2f 01 00 00 48 81 ff 06 04 00 00 0f 84 a3 00 00 00 48 81 ff 02 04 00 00 0f 84 26 01 00 00 40 f6 c7 01 0f 85 8c 00 00 00 <48> 8b 07 a8 01 0f 85 81 00 00 00 8b 47 34 85 c0 74 7a 8d 50 01 4c
> Sep 27 00:49:20 myserver kernel: RSP: 0000:ffffb4de8169bcc0 EFLAGS: 00010246
> Sep 27 00:49:20 myserver kernel: RAX: 00000000000000a2 RBX: ffffb4de8169bd18 RCX: 00000000000003bd
> Sep 27 00:49:20 myserver kernel: RDX: ffffb4de8169bd18 RSI: ffff960758b9c2b0 RDI: 00000000000000a2
> Sep 27 00:49:20 myserver kernel: RBP: ffff960758b9c2b0 R08: 00000000000003bd R09: 00007f6da3ef5fff
> Sep 27 00:49:20 myserver kernel: R10: 00000000000003ae R11: 0000000000000000 R12: 00000000000003bd
> Sep 27 00:49:20 myserver kernel: R13: ffff960600431260 R14: ffff960758b9c2b0 R15: ffff9605dc7bedb0
> Sep 27 00:49:20 myserver kernel: FS:  00007f6e29110a40(0000) GS:ffff96082bf80000(0000) knlGS:0000000000000000
> Sep 27 00:49:20 myserver kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> Sep 27 00:49:20 myserver kernel: CR2: 00000000000000a2 CR3: 000000014a17a000 CR4: 0000000000350ee0
> Sep 27 00:49:20 myserver kernel: ------------[ cut here ]------------
> Sep 27 00:49:20 myserver kernel: Voluntary context switch within RCU read-side critical section!
> Sep 27 00:49:20 myserver kernel: WARNING: CPU: 3 PID: 2155714 at kernel/rcu/tree_plugin.h:320 rcu_note_context_switch+0x4ee/0x690
> Sep 27 00:49:20 myserver kernel: Modules linked in: tcp_bbr ipt_REJECT nf_reject_ipv4 xt_multiport xt_nat xt_tcpudp veth xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables nfnetlink br_netfilter bridge stp llc overlay binfmt_misc intel_rapl_msr intel_rapl_common ghash_clmulni_intel sha512_ssse3 sha512_generic aesni_intel virtio_gpu crypto_simd cryptd virtio_dma_buf pcspkr iTCO_wdt intel_pmc_bxt virtio_console drm_shmem_helper iTCO_vendor_support watchdog virtio_rng virtio_balloon rng_core drm_kms_helper button joydev evdev sg serio_raw drm loop fuse dm_mod efi_pstore configfs qemu_fw_cfg ip_tables x_tables autofs4 xfs libcrc32c crc32c_generic hid_generic usbhid hid sr_mod cdrom sd_mod t10_pi crc64_rocksoft crc64 crc_t10dif crct10dif_generic ahci libahci virtio_net net_failover virtio_scsi xhci_pci failover libata xhci_hcd i2c_i801 i2c_smbus crct10dif_pclmul crct10dif_common scsi_mod psmouse
> Sep 27 00:49:20 myserver kernel:  crc32_pclmul crc32c_intel scsi_common usbcore lpc_ich virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio virtio_ring usb_common
> Sep 27 00:49:20 myserver kernel: CPU: 3 PID: 2155714 Comm: postmaster Tainted: G      D            6.1.0-12-amd64 #1  Debian 6.1.52-1
> Sep 27 00:49:20 myserver kernel: Hardware name: Hetzner vServer/Standard PC (Q35 + ICH9, 2009), BIOS 20171111 11/11/2017
> Sep 27 00:49:20 myserver kernel: RIP: 0010:rcu_note_context_switch+0x4ee/0x690
> Sep 27 00:49:20 myserver kernel: Code: 49 89 3f 49 83 bc 24 98 00 00 00 00 0f 85 66 fe ff ff e9 58 fe ff ff 48 c7 c7 30 23 76 a6 c6 05 59 0f ad 01 01 e8 52 89 f6 ff <0f> 0b e9 70 fb ff ff a9 ff ff ff 7f 0f 84 2c fc ff ff 65 48 8b 3c
> Sep 27 00:49:20 myserver kernel: RSP: 0018:ffffb4de8169bc60 EFLAGS: 00010086
> Sep 27 00:49:20 myserver kernel: RAX: 0000000000000000 RBX: ffff96082bfb1c00 RCX: 0000000000000000
> Sep 27 00:49:20 myserver kernel: RDX: 0000000000000003 RSI: ffffffffa679e27e RDI: 00000000ffffffff
> Sep 27 00:49:20 myserver kernel: RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb4de8169bad0
> Sep 27 00:49:20 myserver kernel: R10: 0000000000000003 R11: ffffffffa6ed43c8 R12: 0000000000030e40
> Sep 27 00:49:20 myserver kernel: R13: ffff9606ce16e600 R14: ffffb4de8169bd50 R15: 0000000000000000
> Sep 27 00:49:20 myserver kernel: FS:  0000000000000000(0000) GS:ffff96082bf80000(0000) knlGS:0000000000000000
> Sep 27 00:49:20 myserver kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> Sep 27 00:49:20 myserver kernel: CR2: 00000000000000a2 CR3: 00000001fc610000 CR4: 0000000000350ee0
> Sep 27 00:49:20 myserver kernel: Call Trace:
> Sep 27 00:49:20 myserver kernel:  <TASK>
> Sep 27 00:49:20 myserver kernel:  ? __warn+0x7d/0xc0
> Sep 27 00:49:20 myserver kernel:  ? rcu_note_context_switch+0x4ee/0x690
> Sep 27 00:49:20 myserver kernel:  ? report_bug+0xe6/0x170
> Sep 27 00:49:20 myserver kernel:  ? irq_work_queue+0xa/0x50
> Sep 27 00:49:20 myserver kernel:  ? handle_bug+0x41/0x70
> Sep 27 00:49:20 myserver kernel:  ? exc_invalid_op+0x13/0x60
> Sep 27 00:49:20 myserver kernel:  ? asm_exc_invalid_op+0x16/0x20
> Sep 27 00:49:20 myserver kernel:  ? rcu_note_context_switch+0x4ee/0x690
> Sep 27 00:49:20 myserver kernel:  __schedule+0xac/0xa20
> Sep 27 00:49:20 myserver kernel:  schedule+0x5d/0xe0
> Sep 27 00:49:20 myserver kernel:  rwsem_down_write_slowpath+0x34e/0x730
> Sep 27 00:49:20 myserver kernel:  exit_mmap+0xf6/0x2f0
> Sep 27 00:49:20 myserver kernel:  __mmput+0x3e/0x130
> Sep 27 00:49:20 myserver kernel:  do_exit+0x2fc/0xb10
> Sep 27 00:49:20 myserver kernel:  make_task_dead+0x8d/0x90
> Sep 27 00:49:20 myserver kernel:  rewind_stack_and_make_dead+0x17/0x20
> Sep 27 00:49:20 myserver kernel: RIP: 0033:0x7f6e2c752345
> Sep 27 00:49:20 myserver kernel: Code: Unable to access opcode bytes at 0x7f6e2c75231b.
> Sep 27 00:49:20 myserver kernel: RSP: 002b:00007ffe0d2f29a0 EFLAGS: 00010206
> Sep 27 00:49:20 myserver kernel: RAX: 00007ffe0d2f2a14 RBX: 0000000033b7606e RCX: 0000000000008003
> Sep 27 00:49:20 myserver kernel: RDX: 00007f6d9f67aff4 RSI: 0000000000000007 RDI: 0000000033b7606e
> Sep 27 00:49:20 myserver kernel: RBP: 0000000000000001 R08: 00007ffe0d2f2ae0 R09: 0000558ffcfe7aa0
> Sep 27 00:49:20 myserver kernel: R10: 00007f6e2b967510 R11: 0000000000000011 R12: 00007f6d9f687fc8
> Sep 27 00:49:20 myserver kernel: R13: 00007f6d9dc6b888 R14: 0000000000000009 R15: 0000558ffcfe7cb0
> Sep 27 00:49:20 myserver kernel:  </TASK>
> Sep 27 00:49:20 myserver kernel: ---[ end trace 0000000000000000 ]---
> Sep 27 00:49:41 myserver kernel: rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> Sep 27 00:49:41 myserver kernel: rcu:         Tasks blocked on level-0 rcu_node (CPUs 0-3): P2155714/1:b..l
> Sep 27 00:49:41 myserver kernel:         (detected by 3, t=5252 jiffies, g=242861801, q=8379 ncpus=4)
> Sep 27 00:49:42 myserver kernel: rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P2155714 } 5276 jiffies s: 1125909 root: 0x0/T
> Sep 27 00:49:42 myserver kernel: rcu: blocking rcu_node structures (internal RCU debug):
> ================================
> 
> 
> However the system still stays up for a few hours after that, after which it throws another call trace and hard crashes soon after that:
> 
> 
> ================================
> Sep 27 03:19:24 myserver sshd[2176647]: fatal: fork of unprivileged child failed
> Sep 27 03:19:53 myserver kernel: rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> Sep 27 03:19:59 myserver kernel: rcu:         Tasks blocked on level-0 rcu_node (CPUs 0-3): P2155714/1:b..l
> Sep 27 03:20:02 myserver kernel:         (detected by 1, t=2258248 jiffies, g=242861801, q=5722891 ncpus=4)
> Sep 27 03:20:28 myserver kernel: rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P2155714 } 2259100 jiffies s: 1125909 root: 0x0/T
> Sep 27 03:20:31 myserver kernel: rcu: blocking rcu_node structures (internal RCU debug):
> Sep 27 03:20:50 myserver kernel: redis-server invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
> Sep 27 03:20:51 myserver kernel: CPU: 2 PID: 1442 Comm: redis-server Tainted: G      D W          6.1.0-12-amd64 #1  Debian 6.1.52-1
> Sep 27 03:20:51 myserver kernel: Hardware name: Hetzner vServer/Standard PC (Q35 + ICH9, 2009), BIOS 20171111 11/11/2017
> Sep 27 03:20:51 myserver kernel: Call Trace:
> Sep 27 03:20:51 myserver kernel:  <TASK>
> Sep 27 03:20:51 myserver kernel:  dump_stack_lvl+0x44/0x5c
> Sep 27 03:20:51 myserver kernel:  dump_header+0x4a/0x211
> Sep 27 03:20:51 myserver kernel:  oom_kill_process.cold+0xb/0x10
> Sep 27 03:20:51 myserver kernel:  out_of_memory+0x1fd/0x4c0
> Sep 27 03:20:51 myserver kernel:  __alloc_pages_slowpath.constprop.0+0xc73/0xdc0
> Sep 27 03:20:51 myserver kernel:  __alloc_pages+0x305/0x330
> Sep 27 03:20:51 myserver kernel:  folio_alloc+0x17/0x50
> Sep 27 03:20:51 myserver kernel:  __filemap_get_folio+0x155/0x340
> Sep 27 03:20:51 myserver kernel:  filemap_fault+0x139/0x910
> Sep 27 03:20:51 myserver kernel:  __do_fault+0x33/0x110
> Sep 27 03:20:51 myserver kernel:  do_fault+0x1b9/0x410
> Sep 27 03:20:51 myserver kernel:  __handle_mm_fault+0x660/0xfa0
> Sep 27 03:20:51 myserver kernel:  handle_mm_fault+0xdb/0x2d0
> Sep 27 03:20:51 myserver kernel:  do_user_addr_fault+0x19c/0x570
> Sep 27 03:20:51 myserver kernel:  exc_page_fault+0x70/0x170
> Sep 27 03:20:51 myserver kernel:  asm_exc_page_fault+0x22/0x30
> Sep 27 03:20:51 myserver kernel: RIP: 0033:0x5557864c7fb4
> Sep 27 03:20:51 myserver kernel: Code: Unable to access opcode bytes at 0x5557864c7f8a.
> Sep 27 03:20:51 myserver kernel: RSP: 002b:00007ffda9044ad0 EFLAGS: 00010202
> Sep 27 03:20:51 myserver kernel: RAX: 0000000000000000 RBX: 00005557867ca580 RCX: 00005557866a7fad
> Sep 27 03:20:51 myserver kernel: RDX: 0000000000813000 RSI: 0000000000000000 RDI: 00005557869defa0
> Sep 27 03:20:51 myserver kernel: RBP: 0000011bfff0f7c0 R08: 00007ffda9044aa0 R09: 0000000000000000
> Sep 27 03:20:51 myserver kernel: R10: 00005557866fac00 R11: 0000555786714e83 R12: 00005557867cbbe0
> Sep 27 03:20:51 myserver kernel: R13: 0000000000000000 R14: 00000000207e7e5d R15: 00000000042e44c6
> Sep 27 03:20:51 myserver kernel:  </TASK>
> Sep 27 03:20:51 myserver kernel: Mem-Info:
> Sep 27 03:20:51 myserver kernel: active_anon:1098265 inactive_anon:221542 isolated_anon:0
>                                           active_file:29 inactive_file:1039 isolated_file:155
>                                           unevictable:768 dirty:0 writeback:0
>                                           slab_reclaimable:148451 slab_unreclaimable:358991
>                                           mapped:241741 shmem:540182 pagetables:50339
>                                           sec_pagetables:0 bounce:0
>                                           kernel_misc_reclaimable:0
>                                           free:26631 free_pcp:1 free_cma:0
> Sep 27 03:20:51 myserver kernel: Node 0 active_anon:4393060kB inactive_anon:886168kB active_file:116kB inactive_file:4152kB unevictable:3072kB isolated(anon):0kB isolated(file):820kB mapped:966964kB dirty:0kB writeback:0kB shmem:2160728kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 18432kB writeback_tmp:0kB kernel_stack:27184kB pagetables:201356kB sec_pagetables:0kB all_unreclaimable? no
> Sep 27 03:20:51 myserver kernel: Node 0 DMA free:14336kB boost:0kB min:128kB low:160kB high:192kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
> Sep 27 03:20:51 myserver kernel: lowmem_reserve[]: 0 1938 7698 7698 7698
> Sep 27 03:20:51 myserver kernel: Node 0 DMA32 free:39988kB boost:0kB min:16980kB low:21224kB high:25468kB reserved_highatomic:0KB active_anon:999504kB inactive_anon:233396kB active_file:204kB inactive_file:1652kB unevictable:0kB writepending:0kB present:2080624kB managed:2015088kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
> Sep 27 03:20:51 myserver kernel: lowmem_reserve[]: 0 0 5760 5760 5760
> Sep 27 03:20:51 myserver kernel: Node 0 Normal free:52200kB boost:0kB min:50468kB low:63084kB high:75700kB reserved_highatomic:2048KB active_anon:3393556kB inactive_anon:652772kB active_file:56kB inactive_file:3424kB unevictable:3072kB writepending:0kB present:6094848kB managed:5906232kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
> Sep 27 03:20:51 myserver kernel: lowmem_reserve[]: 0 0 0 0 0
> Sep 27 03:20:51 myserver kernel: Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 3*4096kB (M) = 14336kB
> Sep 27 03:20:51 myserver kernel: Node 0 DMA32: 1041*4kB (UM) 535*8kB (UME) 382*16kB (UM) 241*32kB (UME) 151*64kB (UME) 46*128kB (UM) 1*256kB (M) 2*512kB (M) 0*1024kB 1*2048kB (E) 0*4096kB = 41148kB
> Sep 27 03:20:51 myserver kernel: Node 0 Normal: 1398*4kB (UM) 1158*8kB (UME) 1020*16kB (UM) 379*32kB (UM) 139*64kB (UM) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 52200kB
> Sep 27 03:20:51 myserver kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
> Sep 27 03:20:51 myserver kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
> Sep 27 03:20:51 myserver kernel: 543215 total pagecache pages
> Sep 27 03:20:51 myserver kernel: 1732 pages in swap cache
> Sep 27 03:20:51 myserver kernel: Free swap  = 0kB
> Sep 27 03:20:51 myserver kernel: Total swap = 2097148kB
> Sep 27 03:20:51 myserver kernel: 2047866 pages RAM
> Sep 27 03:20:51 myserver kernel: 0 pages HighMem/MovableOnly
> Sep 27 03:20:51 myserver kernel: 63696 pages reserved
> Sep 27 03:20:51 myserver kernel: 0 pages hwpoisoned
> Sep 27 03:20:51 myserver kernel: Out of memory: Killed process 2176501 (postmaster) total-vm:2402612kB, anon-rss:61216kB, file-rss:0kB, shmem-rss:931292kB, UID:101 pgtables:4600kB oom_score_adj:0
> Sep 27 03:20:51 myserver systemd[1]: docker-f56204f19a266d718f04900bd81d5add3bcefac782624f38d61d0e4d8a6ce32e.scope: A process of this unit has been killed by the OOM killer.
> Sep 27 03:20:52 myserver sshd[2176678]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.105.142.10  user=root
> Sep 27 03:20:56 myserver kernel: rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> Sep 27 03:20:56 myserver kernel: rcu:         Tasks blocked on level-0 rcu_node (CPUs 0-3): P2155714/1:b..l
> Sep 27 03:20:56 myserver kernel:         (detected by 1, t=2274003 jiffies, g=242861801, q=5742055 ncpus=4)
> Sep 27 03:21:01 myserver kernel: rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P2155714 } 2274971 jiffies s: 1125909 root: 0x0/T
> Sep 27 03:21:01 myserver kernel: rcu: blocking rcu_node structures (internal RCU debug):
> ================================
> 
> 
> It appears that this same bug has been identified related to XFS, and a patch appears to be in the works:
> - https://lore.kernel.org/lkml/ZMHkLA+r2K6hKsr5@casper.infradead.org/t/#rdb5b8586f93807a02857ac75dfb041c386f4c170
> - https://bugzilla.kernel.org/show_bug.cgi?id=216646

Thanks for the report. This should be fixed upstream 6.1.53 and
pending now for the next upload for bookworm.

Regards,
Salvatore

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#80546

Fromsb56637@gmail.com
Date2023-09-27 23:10 +0200
Message-ID<HiJXb-bZgW-1@gated-at.bofh.it>
In reply to#80544
On 9/27/23 14:29, Salvatore Bonaccorso wrote:

> Thanks for the report. This should be fixed upstream 6.1.53 and
> pending now for the next upload for bookworm.

Hi Salvatore, thanks a lot for the fast reply!
So do you think that the bug I reported with XFS is the same as the fix being implemented upstream? Will the next upload for Bookworm come soon?

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#80549

FromSalvatore Bonaccorso <carnil@debian.org>
Date2023-09-28 06:40 +0200
Message-ID<HiQYF-c3vo-1@gated-at.bofh.it>
In reply to#80546
Hi,

On Wed, Sep 27, 2023 at 04:03:56PM -0500, sb56637@gmail.com wrote:
> On 9/27/23 14:29, Salvatore Bonaccorso wrote:
> 
> > Thanks for the report. This should be fixed upstream 6.1.53 and
> > pending now for the next upload for bookworm.
> 
> Hi Salvatore, thanks a lot for the fast reply!
> So do you think that the bug I reported with XFS is the same as the
> fix being implemented upstream? Will the next upload for Bookworm
> come soon?

If not please then reopen, but the traces looks similar enough.

The next upload to bookworm is scheduled for the 7th October for next
point release, which will contain a rebase to 6.1.55.

Regards,
Salvatore

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