[linux-azure] panic in ext4_resize_fs() found during storage testing
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-azure (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Xenial |
Fix Released
|
Undecided
|
Unassigned | ||
Cosmic |
Invalid
|
Undecided
|
Unassigned | ||
Disco |
Invalid
|
Undecided
|
Unassigned |
Bug Description
A panic was observed during file system testing. The trace is the following:
[ 8783.243586] kernel BUG at /build/
[ 8783.252751] invalid opcode: 0000 [#1] SMP PTI
[ 8783.256735] CPU: 7 PID: 39476 Comm: resize2fs Not tainted 4.18.0-1023-azure #24~18.04.1-Ubuntu
[ 8783.256735] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090007 06/02/2017
[ 8783.256735] RIP: 0010:ext4_
[ 8783.256735] Code: 50 ff ff ff 41 8b 75 10 4d 8b 65 00 85 f6 0f 94 c0 4d 85 e4 0f 94 c1 09 c8 83 bd 5c ff ff ff 01 7e 48 84 c0 0f 84 43 06 00 00 <0f> 0b 48 c7 c2 68 a7 8d 8f 48 c7 c6 00 fb 88 8f 4c 89 f7 e8 0d f8
[ 8783.256735] RSP: 0018:ffff984e8d
[ 8783.256735] RAX: 0000000000205c01 RBX: 000000000000001f RCX: 0000000000000000
[ 8783.256735] RDX: ffff8b1dbe1367d0 RSI: 0000000000000000 RDI: 0000000000000000
[ 8783.256735] RBP: ffff984e8dce7d88 R08: ffff984e8dce7d4c R09: ffff984e8dce7d54
[ 8783.256735] R10: 0000000000000120 R11: 0000000000000001 R12: ffff8b1dbe136800
[ 8783.256735] R13: ffff8b1d74aefe80 R14: ffff8b1dbdeb9000 R15: 0000000000000000
[ 8783.256735] FS: 00007f213fed30c
[ 8783.256735] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8783.256735] CR2: 0000556aa08ae9b8 CR3: 0000001b8e324005 CR4: 00000000003606e0
[ 8783.256735] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8783.256735] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8783.256735] Call Trace:
[ 8783.256735] ? security_
[ 8783.256735] ext4_ioctl+
[ 8783.256735] ? audit_filter_
[ 8783.256735] ? audit_filter_
[ 8783.256735] do_vfs_
[ 8783.256735] ksys_ioctl+
[ 8783.256735] __x64_sys_
[ 8783.256735] do_syscall_
[ 8783.256735] entry_SYSCALL_
[ 8783.256735] RIP: 0033:0x7f213f3825d7
[ 8783.256735] Code: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 f7 d8 64 89 01 48
[ 8783.256735] RSP: 002b:00007ffe8e
[ 8783.256735] RAX: ffffffffffffffda RBX: 0000556aa08aa980 RCX: 00007f213f3825d7
[ 8783.256735] RDX: 00007ffe8effd7d0 RSI: 0000000040086610 RDI: 0000000000000004
[ 8783.256735] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
[ 8783.256735] R10: 0000000000000000 R11: 0000000000000246 R12: 0000556aa08ac980
[ 8783.256735] R13: 00007ffe8effd7d0 R14: 0000556aa08a92d0 R15: 0000000000000000
This issue is resolved by the following upstream commit:
f96c3ac8dfc2 ("ext4: fix crash during online resizing")
Commit f96c3ac8dfc2 is in mainline as of v5.1-rc1. This commit was requested in the upstream stable kernels. However, the Ubuntu kernels are EOL upstream. Please include this commit in the 16.04 and 18.04 linux-azure kernels.
CVE References
Changed in linux-azure (Ubuntu Xenial): | |
status: | New → Fix Committed |
Changed in linux-azure (Ubuntu Cosmic): | |
status: | New → Fix Committed |
tags: |
added: verification-done-bionic removed: verification-needed-bionic |
Changed in linux-azure (Ubuntu Cosmic): | |
status: | Fix Committed → Invalid |
Changed in linux-azure (Ubuntu Disco): | |
status: | New → Incomplete |
status: | Incomplete → Invalid |
Status changed to 'Confirmed' because the bug affects multiple users.