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Merged
merged 1 commit into from
Apr 2, 2025

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PlaidCat
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@PlaidCat PlaidCat commented Apr 2, 2025

jira LE-2628

The config changes should have been run through make olddefconfig but were not after making their modifications. We want to do thsi so that we can identify easily configs that might be introduced in a Zeta release of the LT or Stable GKH kernels.

Fixes: 59a132d

Basic process

So for each config in ciq/configs/*.config I did a make ARCH={arm64,x86_64} CROSS_COMPILE=scripts/dummy-tools/ olddefconfig then visually (vimdiff) checked the deltas ... most of this was it just moving some data around.
Specifically the ARCH and CROSS_COMPILE are what Fedora / RedHat uses in kernel-ark so I picked it up to make sure that the local hosts GCC doesn't do whacky things.

$ cp ciq/configs/kernel-aarch64-debug.config .config
$ make ARCH=arm64 CROSS_COMPILE=scripts/dummy-tools/ olddefconfig
#
# configuration written to .config
#
$ vimdiff .config ciq/configs/kernel-aarch64-debug.config
2 files to edit
$ cp ciq/configs/kernel-aarch64-64k.config .config

jira LE-2628

The config changes should have been run through make olddefconfig but
were not after making their modifications.  We want to do thsi so that
we can identify easily configs that might be introduced in a Zeta
release of the LT or Stable GKH kernels.

Fixes: 59a132d
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@josephtate josephtate left a comment

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Looks ok to me

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@thefossguy-ciq thefossguy-ciq left a comment

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🚤

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@bmastbergen bmastbergen left a comment

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🥌

@PlaidCat PlaidCat merged commit 0bbb5c5 into ciq-6.12.y Apr 2, 2025
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@PlaidCat PlaidCat deleted the {jmaple}_config_cleanup_ciq-6.12.y branch April 2, 2025 20:23
github-actions bot pushed a commit that referenced this pull request May 31, 2025
w/ below testcase, resize will generate a corrupted image which
contains inconsistent metadata, so when mounting such image, it
will trigger kernel panic:

touch img
truncate -s $((512*1024*1024*1024)) img
mkfs.f2fs -f img $((256*1024*1024))
resize.f2fs -s -i img -t $((1024*1024*1024))
mount img /mnt/f2fs

------------[ cut here ]------------
kernel BUG at fs/f2fs/segment.h:863!
Oops: invalid opcode: 0000 [#1] SMP PTI
CPU: 11 UID: 0 PID: 3922 Comm: mount Not tainted 6.15.0-rc1+ #191 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:f2fs_ra_meta_pages+0x47c/0x490

Call Trace:
 f2fs_build_segment_manager+0x11c3/0x2600
 f2fs_fill_super+0xe97/0x2840
 mount_bdev+0xf4/0x140
 legacy_get_tree+0x2b/0x50
 vfs_get_tree+0x29/0xd0
 path_mount+0x487/0xaf0
 __x64_sys_mount+0x116/0x150
 do_syscall_64+0x82/0x190
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fdbfde1bcfe

The reaseon is:

sit_i->bitmap_size is 192, so size of sit bitmap is 192*8=1536, at maximum
there are 1536 sit blocks, however MAIN_SEGS is 261893, so that sit_blk_cnt
is 4762, build_sit_entries() -> current_sit_addr() tries to access
out-of-boundary in sit_bitmap at offset from [1536, 4762), once sit_bitmap
and sit_bitmap_mirror is not the same, it will trigger f2fs_bug_on().

Let's add sanity check in f2fs_sanity_check_ckpt() to avoid panic.

Cc: [email protected]
Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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4 participants