ci2 starts bisection 2024-01-09 18:51:07.455752063 +0000 UTC m=+24070.442420170 bisecting fixing commit since 9d6bde853685609a631871d7c12be94fdf8d912e building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit 9d6bde853685609a631871d7c12be94fdf8d912e testing commit 9d6bde853685609a631871d7c12be94fdf8d912e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5b7c29f9245ec6af4618ffe284e1583cefe17936b2be96af53617becacce1386 run #0: crashed: KASAN: slab-out-of-bounds 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-out-of-bounds Read in ext4_read_inline_data run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #5: crashed: KASAN: 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: use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #10: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #11: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #12: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #13: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #14: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #15: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #16: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #17: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #18: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #19: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data representative crash: KASAN: slab-out-of-bounds Read in ext4_read_inline_data, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 9d6bde853685609a631871d7c12be94fdf8d912e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3df7c2302ffb62ea996b3995bdcf6d009b6df1e65adc735c819103d0d120d909 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #1: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #2: crashed: KASAN: 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: 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: use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: 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-out-of-bounds Read in ext4_read_inline_data, 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=3703 full=7272 leaves diff=1986 split chunks (needed=false): <1986> split chunk #0 of len 1986 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 9d6bde853685609a631871d7c12be94fdf8d912e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f780c64a0c250ef301fc1368511b8b86d5959ca187b89e15d61f3014fa7d168c run #0: crashed: KASAN: slab-out-of-bounds 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-out-of-bounds Read in ext4_read_inline_data run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #5: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #6: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: 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-out-of-bounds Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 9d6bde853685609a631871d7c12be94fdf8d912e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 69e768b183b56993f7a4d264b0ef6095cd6b8b823afd497a33044ef658038224 run #0: crashed: KASAN: 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: use-after-free Read in ext4_read_inline_data run #3: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #4: crashed: KASAN: 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: use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: use-after-free Read in ext4_read_inline_data representative crash: KASAN: 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 9d6bde853685609a631871d7c12be94fdf8d912e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 171e93cc97a82619ddfe3b3376ac90625472d55ee764ee5b1f4d757219155a15 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #1: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #2: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #3: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #4: crashed: KASAN: 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: use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: 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 [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 9d6bde853685609a631871d7c12be94fdf8d912e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b5a96f07e49853d60693f7aa8718374a68172a1daf3ccd8777f6cfcee7d08edb run #0: crashed: KASAN: 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: use-after-free Read in ext4_read_inline_data run #3: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #4: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #5: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #6: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #9: crashed: KASAN: use-after-free Read in ext4_read_inline_data representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 9d6bde853685609a631871d7c12be94fdf8d912e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f45aa59a36dd2b90f6336889c0ceda31f95194a8b49815df1da958c2301b4ba run #0: crashed: KASAN: 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: 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: use-after-free Read in ext4_read_inline_data run #5: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #6: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #8: crashed: KASAN: 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: use-after-free Read in ext4_read_inline_data, types: [KASAN] the chunk can be dropped disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing current HEAD 26c690eff0a56293e0b6911a38e406c211b35547 testing commit 26c690eff0a56293e0b6911a38e406c211b35547 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d8d06bbb1c077941866697196f79d9a17fce91ee197435d90cd75075ff39bdd7 run #0: crashed: KASAN: 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: use-after-free Read in ext4_read_inline_data run #3: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #4: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #5: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #6: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #7: crashed: KASAN: use-after-free 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-out-of-bounds Read in ext4_read_inline_data representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 55m43.96383081s (build: 29m24.743916648s, test: 24m34.359068657s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.146 crash: KASAN: use-after-free Read in ext4_read_inline_data loop0: detected capacity change from 0 to 2048 EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: none. ================================================================== BUG: KASAN: use-after-free in ext4_read_inline_data fs/ext4/inline.c:209 [inline] BUG: KASAN: use-after-free in ext4_read_inline_data+0x1e0/0x290 fs/ext4/inline.c:177 Read of size 20 at addr ffff88810ec441a3 by task syz-executor.0/1509 CPU: 1 PID: 1509 Comm: syz-executor.0 Not tainted 5.15.146-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x41/0x5e lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:451 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memcpy+0x20/0x60 mm/kasan/shadow.c:65 ext4_read_inline_data fs/ext4/inline.c:209 [inline] ext4_read_inline_data+0x1e0/0x290 fs/ext4/inline.c:177 ext4_convert_inline_data_nolock+0xe2/0xbd0 fs/ext4/inline.c:1223 ext4_convert_inline_data+0x419/0x4e0 fs/ext4/inline.c:2056 ext4_fallocate+0x13f/0x2d60 fs/ext4/extents.c:4705 vfs_fallocate+0x2a8/0xa40 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0xb0/0x100 fs/open.c:337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7feae699a959 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feae651d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007feae6ab9f80 RCX: 00007feae699a959 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007feae69f6c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007feae6ab9f80 R15: 00007ffc061b8868 Allocated by task 1285: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] __kasan_kmalloc+0x7c/0x90 mm/kasan/common.c:522 kmalloc include/linux/slab.h:596 [inline] tomoyo_realpath_from_path+0xb0/0x6d0 security/tomoyo/realpath.c:254 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x1ed/0x320 security/tomoyo/file.c:822 security_inode_getattr+0xab/0x100 security/security.c:1348 vfs_getattr fs/stat.c:157 [inline] vfs_statx+0xe8/0x2e0 fs/stat.c:225 vfs_fstatat fs/stat.c:243 [inline] __do_sys_newfstatat+0x7d/0xd0 fs/stat.c:411 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Freed by task 1285: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xe0/0x110 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook mm/slub.c:1731 [inline] slab_free mm/slub.c:3499 [inline] kfree+0xd0/0x4c0 mm/slub.c:4559 tomoyo_realpath_from_path+0x16b/0x6d0 security/tomoyo/realpath.c:291 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x1ed/0x320 security/tomoyo/file.c:822 security_inode_getattr+0xab/0x100 security/security.c:1348 vfs_getattr fs/stat.c:157 [inline] vfs_statx+0xe8/0x2e0 fs/stat.c:225 vfs_fstatat fs/stat.c:243 [inline] __do_sys_newfstatat+0x7d/0xd0 fs/stat.c:411 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff88810ec44000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 419 bytes inside of 4096-byte region [ffff88810ec44000, ffff88810ec45000) The buggy address belongs to the page: page:ffffea00043b1000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10ec40 head:ffffea00043b1000 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 0000000000000000 dead000000000122 ffff888100042140 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 1285, ts 44250814835, free_ts 44242458672 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x166f/0x2910 mm/page_alloc.c:4159 __alloc_pages+0x2b3/0x590 mm/page_alloc.c:5421 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab+0x2eb/0x430 mm/slub.c:1912 new_slab mm/slub.c:1975 [inline] ___slab_alloc+0xb1c/0xf80 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] __kmalloc+0x2da/0x2f0 mm/slub.c:4403 kmalloc include/linux/slab.h:596 [inline] tomoyo_realpath_from_path+0xb0/0x6d0 security/tomoyo/realpath.c:254 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x1ed/0x320 security/tomoyo/file.c:822 security_inode_getattr+0xab/0x100 security/security.c:1348 vfs_getattr fs/stat.c:157 [inline] vfs_statx+0xe8/0x2e0 fs/stat.c:225 vfs_fstatat fs/stat.c:243 [inline] __do_sys_newfstatat+0x7d/0xd0 fs/stat.c:411 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare+0x34e/0x730 mm/page_alloc.c:1391 free_unref_page_prepare mm/page_alloc.c:3317 [inline] free_unref_page+0x19/0x3b0 mm/page_alloc.c:3396 __unfreeze_partials+0x27d/0x2a0 mm/slub.c:2507 qlink_free mm/kasan/quarantine.c:157 [inline] qlist_free_all+0x68/0x110 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x180/0x1f0 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x73/0x80 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x211/0x310 mm/slub.c:3233 getname_flags.part.0+0x4a/0x440 fs/namei.c:138 user_path_at_empty+0x1e/0x50 fs/namei.c:2882 user_path_at include/linux/namei.h:57 [inline] vfs_statx+0xd6/0x2e0 fs/stat.c:221 vfs_fstatat fs/stat.c:243 [inline] __do_sys_newfstatat+0x7d/0xd0 fs/stat.c:411 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff88810ec44080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810ec44100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88810ec44180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88810ec44200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810ec44280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================