ci2 starts bisection 2025-04-23 18:51:07.669532359 +0000 UTC m=+6417.068553938 bisecting fixing commit since 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef building syzkaller on 46eb10b79c61c4032281212d862c913683ab32a0 ensuring issue is reproducible on original commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef testing commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 7fb2ef3ba33e325ad7549543d5fcb0db84d99cf2b28641db2e1d891e4fd406e4 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #1: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #2: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #10: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #11: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #12: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #13: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #14: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #15: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #16: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #17: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #18: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #19: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir representative crash: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 92473ce23437b5d30e0296d45ffbd964473bbf35a4152afb5b1d5ed699e0f605 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #1: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #2: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #4: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir run #6: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #7: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #8: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_dir run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir representative crash: KASAN: slab-out-of-bounds Read in ext4_read_inline_dir, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4068 full=8128 leaves diff=2131 split chunks (needed=false): <2131> split chunk #0 of len 2131 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 1310a1e1e0b7b9344d22add03c661f74f76daccc493d59c63f63e30385334b4e run #0: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #1: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #3: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #5: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #6: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #8: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data representative crash: KASAN: slab-use-after-free Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: aaafdf3088f280dcc04fa18c50fc5e4a81c6eaaf25e9dae1881d232110e619dc run #0: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #1: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #2: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #4: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #7: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data representative crash: KASAN: slab-use-after-free Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 1c94a209956d1f6c6275aa8ffa6dc784b64d9e2b31b0fef3dc777542bb609bd5 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #1: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #3: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #6: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data representative crash: KASAN: slab-out-of-bounds Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 178712d2062a58985019d10ee613bb39f42c34efb593039a98fa18693ce6032b run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #1: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #2: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #3: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #4: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #5: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #7: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data representative crash: KASAN: slab-out-of-bounds Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 910bfc26d16d07df5a2bfcbc63f0aa9d1397e2ef gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 6cccdb6a3e8f583c9ca802787d894b05d6d2daa0bb53f3270ccc833cf7d15272 run #0: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #2: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #4: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #9: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data representative crash: KASAN: slab-use-after-free Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD a79be02bba5c31f967885c7f3bf3a756d77d11d9 testing commit a79be02bba5c31f967885c7f3bf3a756d77d11d9 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 98dbfb96383de39151f234c72a2dad3bf6a947009c3ffeefe2cb1ead545d6749 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #1: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #4: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #5: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #6: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: slab-use-after-free Read in ext4_read_inline_data representative crash: KASAN: slab-out-of-bounds Read in ext4_read_inline_data, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h37m59.178020452s (build: 50m2.283542057s, test: 36m24.306623534s) crash still not fixed or there were kernel test errors commit msg: Fix mis-uses of 'cc-option' for warning disablement crash: KASAN: slab-out-of-bounds Read in ext4_read_inline_data EXT4-fs error (device loop0): ext4_readdir:264: inode #2: block 16: comm syz-executor: path /0/bus: bad entry in directory: rec_len is smaller than minimal - offset=980, inode=0, rec_len=0, size=1024 fake=0 ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data+0x1ab/0x280 fs/ext4/inline.c:214 Read of size 68 at addr ffff8881062b651a by task syz-executor/2408 CPU: 1 UID: 0 PID: 2408 Comm: syz-executor Not tainted 6.15.0-rc3-syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x10a/0x280 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x28f/0x2a0 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 ext4_read_inline_data+0x1ab/0x280 fs/ext4/inline.c:214 ext4_read_inline_dir+0x2ee/0x9f0 fs/ext4/inline.c:1420 ext4_readdir+0x293/0x2fc0 fs/ext4/dir.c:162 iterate_dir+0x18e/0x490 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:403 [inline] __se_sys_getdents64+0x1d9/0x430 fs/readdir.c:389 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8d/0x170 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7873789333 Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 02 45 f8 ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 RSP: 002b:00007ffc006cb0a8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 000055556ab49520 RCX: 00007f7873789333 RDX: 0000000000008000 RSI: 000055556ab49520 RDI: 0000000000000006 RBP: 000055556ab494f4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 R13: 0000000000000016 R14: 000055556ab494f0 R15: 00007ffc006ce440 Allocated by task 2505: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4210 [inline] kmem_cache_alloc_noprof+0x1bc/0x410 mm/slub.c:4217 getname_flags+0x9d/0x440 fs/namei.c:146 getname include/linux/fs.h:2852 [inline] do_sys_openat2+0xaf/0x1a0 fs/open.c:1423 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0x20f/0x260 fs/open.c:1455 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8d/0x170 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 2505: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2398 [inline] slab_free mm/slub.c:4656 [inline] kmem_cache_free+0x180/0x470 mm/slub.c:4758 do_sys_openat2+0x137/0x1a0 fs/open.c:1437 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0x20f/0x260 fs/open.c:1455 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8d/0x170 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8881062b5500 which belongs to the cache names_cache of size 4096 The buggy address is located 26 bytes to the right of allocated 4096-byte region [ffff8881062b5500, ffff8881062b6500) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1062b0 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x200000000000040(head|node=0|zone=2) page_type: f5(slab) raw: 0200000000000040 ffff888100a8a640 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000070007 00000000f5000000 0000000000000000 head: 0200000000000040 ffff888100a8a640 dead000000000122 0000000000000000 head: 0000000000000000 0000000000070007 00000000f5000000 0000000000000000 head: 0200000000000003 ffffea000418ac01 00000000ffffffff 00000000ffffffff head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2505, tgid 2505 (modprobe), ts 76839331294, free_ts 76817855590 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x108/0x120 mm/page_alloc.c:1718 prep_new_page mm/page_alloc.c:1726 [inline] get_page_from_freelist+0x3f0a/0x41b0 mm/page_alloc.c:3688 __alloc_frozen_pages_noprof+0x252/0x700 mm/page_alloc.c:4970 alloc_pages_mpol+0x14f/0x3c0 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2468 [inline] allocate_slab+0x8b/0x360 mm/slub.c:2632 new_slab mm/slub.c:2686 [inline] ___slab_alloc+0xa1d/0x1160 mm/slub.c:3872 __slab_alloc mm/slub.c:3962 [inline] __slab_alloc_node mm/slub.c:4037 [inline] slab_alloc_node mm/slub.c:4198 [inline] kmem_cache_alloc_noprof+0x27f/0x410 mm/slub.c:4217 getname_flags+0x9d/0x440 fs/namei.c:146 getname include/linux/fs.h:2852 [inline] getname_maybe_null include/linux/fs.h:2859 [inline] vfs_fstatat+0x26/0xe0 fs/stat.c:367 __do_sys_newfstatat fs/stat.c:536 [inline] __se_sys_newfstatat+0xcf/0x740 fs/stat.c:530 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x8d/0x170 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 2503 tgid 2503 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0xb64/0xda0 mm/page_alloc.c:2725 discard_slab mm/slub.c:2730 [inline] __put_partials+0x156/0x1b0 mm/slub.c:3199 put_cpu_partial+0x157/0x1b0 mm/slub.c:3274 __slab_free+0x269/0x360 mm/slub.c:4526 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4210 [inline] __do_kmalloc_node mm/slub.c:4340 [inline] __kmalloc_noprof+0x227/0x530 mm/slub.c:4353 kmalloc_noprof include/linux/slab.h:909 [inline] tomoyo_realpath_from_path+0xe3/0x4e0 security/tomoyo/realpath.c:251 tomoyo_scan_exec_realpath security/tomoyo/condition.c:243 [inline] tomoyo_condition+0x14d8/0x2670 security/tomoyo/condition.c:827 tomoyo_check_acl+0x145/0x390 security/tomoyo/domain.c:177 tomoyo_execute_permission+0x138/0x3b0 security/tomoyo/file.c:615 tomoyo_find_next_domain+0x329/0x1760 security/tomoyo/domain.c:762 tomoyo_bprm_check_security+0xfd/0x130 security/tomoyo/tomoyo.c:102 security_bprm_check+0x2a/0xa0 security/security.c:1302 search_binary_handler fs/exec.c:1768 [inline] exec_binprm fs/exec.c:1810 [inline] bprm_execve+0x64d/0xee0 fs/exec.c:1862 Memory state around the buggy address: ffff8881062b6400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881062b6480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881062b6500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881062b6580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881062b6600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================