Public bug reported: BugLink: https://bugs.launchpad.net/bugs/2112519
[Impact] <placeholder for now> md/raid1:: dm-0: unrecoverable I/O read error for block 527744 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-0: unrecoverable I/O read error for block 527744 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-0: unrecoverable I/O read error for block 527744 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-0: unrecoverable I/O read error for block 527744 BUG: kernel NULL pointer dereference, address: 0000000000000040 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 SMP NOPTI CPU: 3 PID: 19372 Comm: md_1t889zmbfni_ Kdump: loaded Not tainted 6.8.0-1029-aws #31-Ubuntu Hardware name: Amazon EC2 m6a.xlarge/, BIOS 1.0 10/16/2017 RIP: 0010:process_checks+0x25e/0x5e0 [raid1] Code: 8e 19 01 00 00 48 8b 85 78 ff ff ff b9 08 00 00 00 48 8d 7d 90 49 8b 1c c4 49 63 c7 4d 8b 74 c4 50 31 c0 f3 48 ab 48 89 5d 88 <4c> 8b 53 40 45 0f b6 4e 18 49 8b 76 40 49 81 7e 38 a0 04 7c c0 75 RSP: 0018:ffffb39e8142bcb8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000004 RDI: ffffb39e8142bd50 RBP: ffffb39e8142bd80 R08: ffff9a2e001ea000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff9a2e0cd63280 R13: ffff9a2e50d1f800 R14: ffff9a2e50d1f000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff9a3128780000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000040 CR3: 00000001035b2004 CR4: 00000000003706f0 Call Trace: <TASK> ? show_regs+0x6d/0x80 ? __die+0x24/0x80 ? page_fault_oops+0x99/0x1b0 ? do_user_addr_fault+0x2e0/0x660 ? exc_page_fault+0x83/0x190 ? asm_exc_page_fault+0x27/0x30 ? process_checks+0x25e/0x5e0 [raid1] ? process_checks+0x125/0x5e0 [raid1] ? srso_alias_return_thunk+0x5/0xfbef5 ? ___ratelimit+0xc7/0x130 sync_request_write+0x1c8/0x1e0 [raid1] raid1d+0x13a/0x3f0 [raid1] ? srso_alias_return_thunk+0x5/0xfbef5 md_thread+0xae/0x190 ? __pfx_autoremove_wake_function+0x10/0x10 ? __pfx_md_thread+0x10/0x10 kthread+0xda/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x47/0x70 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 </TASK> [Fix] This was fixed in 6.15-rc3 with: commit b7c178d9e57c8fd4238ff77263b877f6f16182ba Author: Meir Elisha <meir.eli...@volumez.com> Date: Tue Apr 8 17:38:08 2025 +0300 Subject: md/raid1: Add check for missing source disk in process_checks() Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b7c178d9e57c8fd4238ff77263b877f6f16182ba This has been applied to jammy and plucky already through upstream -stable. Currently noble and oracular are lagging behind and are not up to the -stable release with the fix. [Testcase] [Where problems can occur] ** Affects: linux (Ubuntu) Importance: Undecided Status: Fix Released ** Affects: linux (Ubuntu Jammy) Importance: Undecided Status: Fix Committed ** Affects: linux (Ubuntu Noble) Importance: Medium Assignee: Matthew Ruffell (mruffell) Status: In Progress ** Affects: linux (Ubuntu Oracular) Importance: Medium Assignee: Matthew Ruffell (mruffell) Status: In Progress ** Affects: linux (Ubuntu Plucky) Importance: Undecided Status: Fix Committed ** Affects: linux (Ubuntu Questing) Importance: Undecided Status: Fix Released ** Tags: sts ** Description changed: + BugLink: https://bugs.launchpad.net/bugs/2112519 + [Impact] <placeholder for now> md/raid1:: dm-0: unrecoverable I/O read error for block 527744 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-0: unrecoverable I/O read error for block 527744 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-0: unrecoverable I/O read error for block 527744 md/raid1:: dm-1: unrecoverable I/O read error for block 527616 md/raid1:: dm-0: unrecoverable I/O read error for block 527744 BUG: kernel NULL pointer dereference, address: 0000000000000040 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page - PGD 0 P4D 0 + PGD 0 P4D 0 SMP NOPTI CPU: 3 PID: 19372 Comm: md_1t889zmbfni_ Kdump: loaded Not tainted 6.8.0-1029-aws #31-Ubuntu Hardware name: Amazon EC2 m6a.xlarge/, BIOS 1.0 10/16/2017 RIP: 0010:process_checks+0x25e/0x5e0 [raid1] Code: 8e 19 01 00 00 48 8b 85 78 ff ff ff b9 08 00 00 00 48 8d 7d 90 49 8b 1c c4 49 63 c7 4d 8b 74 c4 50 31 c0 f3 48 ab 48 89 5d 88 <4c> 8b 53 40 45 0f b6 4e 18 49 8b 76 40 49 81 7e 38 a0 04 7c c0 75 RSP: 0018:ffffb39e8142bcb8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000004 RDI: ffffb39e8142bd50 RBP: ffffb39e8142bd80 R08: ffff9a2e001ea000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff9a2e0cd63280 R13: ffff9a2e50d1f800 R14: ffff9a2e50d1f000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff9a3128780000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000040 CR3: 00000001035b2004 CR4: 00000000003706f0 Call Trace: - <TASK> - ? show_regs+0x6d/0x80 - ? __die+0x24/0x80 - ? page_fault_oops+0x99/0x1b0 - ? do_user_addr_fault+0x2e0/0x660 - ? exc_page_fault+0x83/0x190 - ? asm_exc_page_fault+0x27/0x30 - ? process_checks+0x25e/0x5e0 [raid1] - ? process_checks+0x125/0x5e0 [raid1] - ? srso_alias_return_thunk+0x5/0xfbef5 - ? ___ratelimit+0xc7/0x130 - sync_request_write+0x1c8/0x1e0 [raid1] - raid1d+0x13a/0x3f0 [raid1] - ? srso_alias_return_thunk+0x5/0xfbef5 - md_thread+0xae/0x190 - ? __pfx_autoremove_wake_function+0x10/0x10 - ? __pfx_md_thread+0x10/0x10 - kthread+0xda/0x100 - ? __pfx_kthread+0x10/0x10 - ret_from_fork+0x47/0x70 - ? __pfx_kthread+0x10/0x10 - ret_from_fork_asm+0x1b/0x30 - </TASK> - + <TASK> + ? show_regs+0x6d/0x80 + ? __die+0x24/0x80 + ? page_fault_oops+0x99/0x1b0 + ? do_user_addr_fault+0x2e0/0x660 + ? exc_page_fault+0x83/0x190 + ? asm_exc_page_fault+0x27/0x30 + ? process_checks+0x25e/0x5e0 [raid1] + ? process_checks+0x125/0x5e0 [raid1] + ? srso_alias_return_thunk+0x5/0xfbef5 + ? ___ratelimit+0xc7/0x130 + sync_request_write+0x1c8/0x1e0 [raid1] + raid1d+0x13a/0x3f0 [raid1] + ? srso_alias_return_thunk+0x5/0xfbef5 + md_thread+0xae/0x190 + ? __pfx_autoremove_wake_function+0x10/0x10 + ? __pfx_md_thread+0x10/0x10 + kthread+0xda/0x100 + ? __pfx_kthread+0x10/0x10 + ret_from_fork+0x47/0x70 + ? __pfx_kthread+0x10/0x10 + ret_from_fork_asm+0x1b/0x30 + </TASK> [Fix] This was fixed in 6.15-rc3 with: commit b7c178d9e57c8fd4238ff77263b877f6f16182ba Author: Meir Elisha <meir.eli...@volumez.com> Date: Tue Apr 8 17:38:08 2025 +0300 Subject: md/raid1: Add check for missing source disk in process_checks() Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b7c178d9e57c8fd4238ff77263b877f6f16182ba This has been applied to jammy and plucky already through upstream -stable. Currently noble and oracular are lagging behind and are not up to the -stable release with the fix. [Testcase] [Where problems can occur] ** Also affects: linux (Ubuntu Oracular) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Plucky) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Questing) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Questing) Status: New => Fix Released ** Changed in: linux (Ubuntu Plucky) Status: New => Fix Committed ** Changed in: linux (Ubuntu Oracular) Status: New => In Progress ** Changed in: linux (Ubuntu Jammy) Status: New => Fix Committed ** Changed in: linux (Ubuntu Noble) Status: New => In Progress ** Changed in: linux (Ubuntu Noble) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Oracular) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Noble) Assignee: (unassigned) => Matthew Ruffell (mruffell) ** Changed in: linux (Ubuntu Oracular) Assignee: (unassigned) => Matthew Ruffell (mruffell) ** Tags added: sts -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2112519 Title: raid1: Fix NULL pointer de-reference in process_checks() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2112519/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
