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authorKent Overstreet <kent.overstreet@linux.dev>2023-10-28 00:19:31 +0300
committerKent Overstreet <kent.overstreet@linux.dev>2023-11-02 04:11:08 +0300
commitdf94cb2e57b2cc539f325003e7abb76d3060d55b (patch)
tree2848c43b0303218e5493cf0953180e9f30bdb675 /fs/bcachefs
parentbe9e782df3cb557715630a61dc79d9f966737859 (diff)
downloadlinux-df94cb2e57b2cc539f325003e7abb76d3060d55b.tar.xz
bcachefs: Fix an integer overflow
Fixes: bcachefs (e7fdc10e-54a3-49d9-bd0c-390370889d84): disk usage increased 4294967296 more than 2823707312 sectors reserved) transaction updates for __bchfs_fallocate journal seq 467859 update: btree=extents cached=0 bch2_trans_update+0x4e8/0x540 old u64s 5 type deleted 536925940:3559337304:4294967283 len 0 ver 0 new u64s 6 type reservation 536925940:3559337304:4294967283 len 3559337304 ver 0: generation 0 replicas 2 update: btree=inodes cached=1 bch2_extent_update_i_size_sectors+0x305/0x3b0 old u64s 19 type inode_v3 0:536925940:4294967283 len 0 ver 0: mode 100600 flags 15300000 journal_seq 467859 bi_size 0 bi_sectors 0 bi_version 0 bi_atime 40905301656446 bi_ctime 40905301656446 bi_mtime 40905301656446 bi_otime 40905301656446 bi_uid 0 bi_gid 0 bi_nlink 0 bi_generation 0 bi_dev 0 bi_data_checksum 0 bi_compression 0 bi_project 0 bi_background_compression 0 bi_data_replicas 0 bi_promote_target 0 bi_foreground_target 0 bi_background_target 0 bi_erasure_code 0 bi_fields_set 0 bi_dir 1879048193 bi_dir_offset 3384856038735393365 bi_subvol 0 bi_parent_subvol 0 bi_nocow 0 new u64s 19 type inode_v3 0:536925940:4294967283 len 0 ver 0: mode 100600 flags 15300000 journal_seq 467859 bi_size 0 bi_sectors 3559337304 bi_version 0 bi_atime 40905301656446 bi_ctime 40905301656446 bi_mtime 40905301656446 bi_otime 40905301656446 bi_uid 0 bi_gid 0 bi_nlink 0 bi_generation 0 bi_dev 0 bi_data_checksum 0 bi_compression 0 bi_project 0 bi_background_compression 0 bi_data_replicas 0 bi_promote_target 0 bi_foreground_target 0 bi_background_target 0 bi_erasure_code 0 bi_fields_set 0 bi_dir 1879048193 bi_dir_offset 3384856038735393365 bi_subvol 0 bi_parent_subvol 0 bi_nocow 0 Kernel panic - not syncing: bcachefs (e7fdc10e-54a3-49d9-bd0c-390370889d84): panic after error CPU: 4 PID: 5154 Comm: rsync Not tainted 6.5.9-gateway-gca1614174cc0-dirty #1 Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X570 Phantom Gaming 4, BIOS P4.20 08/02/2021 Call Trace: <TASK> dump_stack_lvl+0x5a/0x90 panic+0x105/0x300 ? console_unlock+0xf1/0x130 ? bch2_printbuf_exit+0x16/0x30 ? srso_return_thunk+0x5/0x10 bch2_inconsistent_error+0x6f/0x80 bch2_trans_fs_usage_apply+0x279/0x3d0 __bch2_trans_commit+0x112a/0x1df0 ? bch2_extent_update+0x13a/0x1d0 bch2_extent_update+0x13a/0x1d0 bch2_extent_fallocate+0x58e/0x740 bch2_fallocate_dispatch+0xb7c/0x1030 ? do_filp_open+0xa0/0x140 vfs_fallocate+0x18e/0x1d0 __x64_sys_fallocate+0x46/0x70 do_syscall_64+0x48/0xa0 ? exit_to_user_mode_prepare+0x4d/0xa0 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fc85d91bbb3 Code: 64 89 02 b8 ff ff ff ff eb bd 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 80 3d 31 da 0d 00 00 49 89 ca 74 14 b8 1d 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5d c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 10 Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs')
-rw-r--r--fs/bcachefs/buckets.c4
-rw-r--r--fs/bcachefs/io_misc.c4
-rw-r--r--fs/bcachefs/io_misc.h2
3 files changed, 5 insertions, 5 deletions
diff --git a/fs/bcachefs/buckets.c b/fs/bcachefs/buckets.c
index 2acd727d3f9b..58d8c6ffd955 100644
--- a/fs/bcachefs/buckets.c
+++ b/fs/bcachefs/buckets.c
@@ -1322,7 +1322,7 @@ int bch2_trans_fs_usage_apply(struct btree_trans *trans,
struct bch_fs *c = trans->c;
static int warned_disk_usage = 0;
bool warn = false;
- unsigned disk_res_sectors = trans->disk_res ? trans->disk_res->sectors : 0;
+ u64 disk_res_sectors = trans->disk_res ? trans->disk_res->sectors : 0;
struct replicas_delta *d, *d2;
struct replicas_delta *top = (void *) deltas->d + deltas->used;
struct bch_fs_usage *dst;
@@ -1381,7 +1381,7 @@ int bch2_trans_fs_usage_apply(struct btree_trans *trans,
if (unlikely(warn) && !xchg(&warned_disk_usage, 1))
bch2_trans_inconsistent(trans,
- "disk usage increased %lli more than %u sectors reserved)",
+ "disk usage increased %lli more than %llu sectors reserved)",
should_not_have_added, disk_res_sectors);
return 0;
need_mark:
diff --git a/fs/bcachefs/io_misc.c b/fs/bcachefs/io_misc.c
index 0979d5e05713..bebc11444ef5 100644
--- a/fs/bcachefs/io_misc.c
+++ b/fs/bcachefs/io_misc.c
@@ -23,7 +23,7 @@
int bch2_extent_fallocate(struct btree_trans *trans,
subvol_inum inum,
struct btree_iter *iter,
- unsigned sectors,
+ u64 sectors,
struct bch_io_opts opts,
s64 *i_sectors_delta,
struct write_point_specifier write_point)
@@ -105,7 +105,7 @@ int bch2_extent_fallocate(struct btree_trans *trans,
if (ret)
goto err;
- sectors = min(sectors, wp->sectors_free);
+ sectors = min_t(u64, sectors, wp->sectors_free);
sectors_allocated = sectors;
bch2_key_resize(&e->k, sectors);
diff --git a/fs/bcachefs/io_misc.h b/fs/bcachefs/io_misc.h
index c9e6ed40e1b8..9cb44a7c43c1 100644
--- a/fs/bcachefs/io_misc.h
+++ b/fs/bcachefs/io_misc.h
@@ -3,7 +3,7 @@
#define _BCACHEFS_IO_MISC_H
int bch2_extent_fallocate(struct btree_trans *, subvol_inum, struct btree_iter *,
- unsigned, struct bch_io_opts, s64 *,
+ u64, struct bch_io_opts, s64 *,
struct write_point_specifier);
int bch2_fpunch_at(struct btree_trans *, struct btree_iter *,
subvol_inum, u64, s64 *);