ci starts bisection 2025-04-09 11:06:48.592771712 +0000 UTC m=+103.233833629 bisecting fixing commit since 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 building syzkaller on 8f98448ed32de3ed37dd5bed05414b81e16e7437 ensuring issue is reproducible on original commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 testing commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: adafc0e75bca359ebadbc45624ce7c440d2cb6931da34c8cabd4e019e722e2ae all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4b6fca80e7b3d83ccb6cc2ebeba0860b3b73cb4a276542975d0138700ca2da2e all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed kconfig minimization: base=4071 full=8032 leaves diff=2031 split chunks (needed=false): <2031> split chunk #0 of len 2031 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 11e62fad5c60e0af860d1e2282edd500d0878f2d0d37e21417264c184cc7c9da all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a135353b7593238c440aee003ae1f3f00985916b033817afd33393616b2e91e0 all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 400a9666c639dfe7e8df87df36a842e7e3bfd01231233434849a62464ee8d815 all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b95db76ff758ce1ad29ebbd894a5be876e4a69b122a1cc04f476749134fa5173 all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 8f6a15f095a63a83b096d9b29aaff4f0fbe6f6e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 61d67e35d05bddb683dce28a7314641a92d0ca214914d34fb3f3838ba36877d5 all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] the chunk can be dropped disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD a24588245776dafc227243a01bfbeb8a59bafba9 testing commit a24588245776dafc227243a01bfbeb8a59bafba9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 21ce3b439c71ac97ff90e83d4a52aeb38d104441513ff0d1b0f560adc4063c36 all runs: crashed: WARNING in ext4_xattr_inode_lookup_create representative crash: WARNING in ext4_xattr_inode_lookup_create, types: [WARNING] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 5h9m6.143968538s (build: 1h43m51.47879289s, test: 28m7.110564595s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'linux_kselftest-kunit-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest crash: WARNING in ext4_xattr_inode_lookup_create EXT4-fs warning (device loop0): ext4_xattr_inode_create:1469: refuse to create EA inode when umounting ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2414 at fs/ext4/xattr.c:1470 ext4_xattr_inode_create fs/ext4/xattr.c:1470 [inline] WARNING: CPU: 1 PID: 2414 at fs/ext4/xattr.c:1470 ext4_xattr_inode_lookup_create+0x586/0x970 fs/ext4/xattr.c:1588 Modules linked in: CPU: 1 UID: 0 PID: 2414 Comm: syz-executor.0 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:ext4_xattr_inode_create fs/ext4/xattr.c:1470 [inline] RIP: 0010:ext4_xattr_inode_lookup_create+0x586/0x970 fs/ext4/xattr.c:1588 Code: 0f 85 63 ff ff ff 41 bf e4 ff ff ff e9 44 02 00 00 48 c7 c6 bd 0b 48 82 ba bd 05 00 00 48 c7 c1 d5 0b 48 82 e8 6b eb fe ff 90 <0f> 0b 90 48 c7 c5 ea ff ff ff 49 8b 44 24 28 48 8b 80 10 06 00 00 RSP: 0018:ffffc9000184b998 EFLAGS: 00010246 RAX: 984a761619b78a00 RBX: 0000000000000000 RCX: 984a761619b78a00 RDX: ffffffff83021020 RSI: c0000000ffffdfff RDI: 00000000ffffffff RBP: 000000000000feeb R08: ffffffff826c92c0 R09: 00000000ffffdfff R10: 0000000000000000 R11: 3fffffffffffffff R12: ffff8881158c2850 R13: 000000000000feea R14: ffffffff83021020 R15: 0000000000000000 FS: 000055555f835480(0000) GS:ffff8882b4cf3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 000000010dacc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_xattr_block_set+0xb5/0xd90 fs/ext4/xattr.c:1908 ext4_xattr_move_to_block fs/ext4/xattr.c:2659 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2734 [inline] ext4_expand_extra_isize_ea+0x5f5/0x8e0 fs/ext4/xattr.c:2822 __ext4_expand_extra_isize+0xbf/0x140 fs/ext4/inode.c:5921 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5964 [inline] __ext4_mark_inode_dirty+0x19f/0x290 fs/ext4/inode.c:6042 ext4_dirty_inode+0x62/0x80 fs/ext4/inode.c:6074 __mark_inode_dirty+0xed/0x530 fs/fs-writeback.c:2527 mark_inode_dirty_sync include/linux/fs.h:2550 [inline] iput+0x41/0x2b0 fs/inode.c:1921 __dentry_kill+0xaa/0x200 fs/dcache.c:660 shrink_kill+0x29/0xa0 fs/dcache.c:1105 shrink_dentry_list+0x40/0x1d0 fs/dcache.c:1132 shrink_dcache_parent+0x44/0x120 fs/dcache.c:-1 do_one_tree+0xb/0x60 fs/dcache.c:1595 shrink_dcache_for_umount+0x36/0x80 fs/dcache.c:1612 generic_shutdown_super+0x1d/0x110 fs/super.c:620 kill_block_super+0x16/0x40 fs/super.c:1710 ext4_kill_sb+0x1d/0x40 fs/ext4/super.c:7393 deactivate_locked_super+0x2d/0x90 fs/super.c:473 cleanup_mnt+0xf8/0x150 fs/namespace.c:1435 task_work_run+0x82/0xb0 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xa4/0x1f0 kernel/entry/common.c:218 do_syscall_64+0xed/0x200 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1bc48be217 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffca151e4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1bc48be217 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffca151e560 RBP: 00007ffca151e560 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffca151f620 R13: 00007f1bc4908336 R14: 000000000000d14e R15: 0000000000000005