diff --git a/_scmsync.obsinfo b/_scmsync.obsinfo
index 83e44a0..286afac 100644
--- a/_scmsync.obsinfo
+++ b/_scmsync.obsinfo
@@ -1,4 +1,4 @@
-mtime: 1724024901
-commit: 1a2400f02946a839c983e3c551740f9d5b3383283791fe2ace29003b7813c6bd
+mtime: 1724027419
+commit: 72bf126e4bcaec767dfd0fe42b21205b414db6d7e5ffe3936377129f20650fa2
 url: https://src.opensuse.org/jengelh/bcachefs-tools
 revision: master
diff --git a/bcachefs-tools.changes b/bcachefs-tools.changes
index 943dbaf..49c5fc1 100644
--- a/bcachefs-tools.changes
+++ b/bcachefs-tools.changes
@@ -4,6 +4,7 @@ Sun Aug 18 23:46:46 UTC 2024 - Jan Engelhardt <jengelh@inai.de>
 - Update to release 1.11.0
   * mount: Fix UAF in option string handling
   * mount: Support asking for password via systemd-ask-password
+- Fix a crash in mkfs.bcachefs by disabling LTO.
 
 -------------------------------------------------------------------
 Mon Jul 22 09:06:43 UTC 2024 - David Disseldorp <ddiss@suse.de>
diff --git a/bcachefs-tools.spec b/bcachefs-tools.spec
index 85af85b..489609a 100644
--- a/bcachefs-tools.spec
+++ b/bcachefs-tools.spec
@@ -62,11 +62,16 @@ This package contains utilities for creating and mounting bcachefs.
 %autosetup -p1
 
 %build
+# LTO produces a broken mkfs.bcachefs which crashes.
+# Also, the LTO WPA linker requires ludicrous amount of memory (>80G) with -ggdb3.
+%define _lto_cflags %nil
 # gh/koverstreet/bcachefs-tools#237
 # bcachefs-tools uses malloc_usable_size, which is incompatible
 # with fortification level 3
 export CFLAGS="${RPM_OPT_FLAGS/_FORTIFY_SOURCE=3/_FORTIFY_SOURCE=2}"
-export CXXFLAGS="${RPM_OPT_FLAGS/_FORTIFY_SOURCE=3/_FORTIFY_SOURCE=2}"
+export CXXFLAGS="$CFLAGS"
+# Workaround antisocial Makefile that forces its own -O level
+export EXTRA_CFLAGS="$CFLAGS"
 %make_build PREFIX="%_prefix" ROOT_SBINDIR="%_sbindir"
 
 %install
diff --git a/build.specials.obscpio b/build.specials.obscpio
index a28a6b4..2b122cc 100644
--- a/build.specials.obscpio
+++ b/build.specials.obscpio
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:fe65e99b1653d6a07b6abc5ba5dd2bb86cedab1b048464fa21ad71f7d90ea423
+oid sha256:38c9fc1f178a7cea13bd807856abce29c36157202cd0769f49df0e760c6df3f4
 size 256