ci2 starts bisection 2024-02-19 23:46:07.932211907 +0000 UTC m=+41043.758578539 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: 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: 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: slab-out-of-bounds 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 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: use-after-free Read in ext4_read_inline_data run #13: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #14: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #15: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #16: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #17: crashed: KASAN: use-after-free Read in ext4_read_inline_data run #18: crashed: KASAN: slab-out-of-bounds Read in ext4_read_inline_data run #19: 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] 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: 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-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: 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 bug reproduces without the instrumentation disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], 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 [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], 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: 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: slab-out-of-bounds 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 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: 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 testing without sub-chunk 3/5 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: 171e93cc97a82619ddfe3b3376ac90625472d55ee764ee5b1f4d757219155a15 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: 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: 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: 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 4/5 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: b5a96f07e49853d60693f7aa8718374a68172a1daf3ccd8777f6cfcee7d08edb run #0: crashed: KASAN: slab-out-of-bounds 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: 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 5/5 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: 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: 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: slab-out-of-bounds 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 [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing current HEAD 6139f2a02fe0ac7a08389b4eb786e0c659039ddd testing commit 6139f2a02fe0ac7a08389b4eb786e0c659039ddd gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1604d67c7ed1b4d3d2b37cf95241949e105b259fcbe54ba1a7c5480760449d1c 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: 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: 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: 57m20.937370369s (build: 22m2.594620058s, test: 31m48.215725024s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.148 crash: KASAN: slab-out-of-bounds 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: slab-out-of-bounds in ext4_read_inline_data fs/ext4/inline.c:209 [inline] BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data+0x1e0/0x290 fs/ext4/inline.c:177 Read of size 20 at addr ffff888105dbf1a3 by task syz-executor.0/1503 CPU: 1 PID: 1503 Comm: syz-executor.0 Not tainted 5.15.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 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: 0033:0x7f937d95c959 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:00007f937d4df0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f937da7bf80 RCX: 00007f937d95c959 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f937d9b8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f937da7bf80 R15: 00007ffc56ab5408 Allocated by task 1: 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_slab_alloc+0x61/0x80 mm/kasan/common.c:467 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 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xc7/0x6c0 fs/kernfs/dir.c:593 kernfs_new_node+0x77/0x160 fs/kernfs/dir.c:657 __kernfs_create_file+0x27/0x2e0 fs/kernfs/file.c:985 sysfs_add_file_mode_ns+0x1aa/0x4b0 fs/sysfs/file.c:317 sysfs_create_file_ns+0x10b/0x190 fs/sysfs/file.c:343 sysfs_create_file include/linux/sysfs.h:607 [inline] device_create_file drivers/base/core.c:2762 [inline] device_create_file drivers/base/core.c:2750 [inline] device_add+0x320/0x1b30 drivers/base/core.c:3338 __acpi_device_add+0x4f7/0xb30 drivers/acpi/scan.c:721 acpi_add_single_object+0x9a1/0x16e0 drivers/acpi/scan.c:1826 acpi_bus_check_add+0x154/0x480 drivers/acpi/scan.c:2055 acpi_ns_walk_namespace+0x1d5/0x4d0 drivers/acpi/acpica/nswalk.c:233 acpi_walk_namespace drivers/acpi/acpica/nsxfeval.c:606 [inline] acpi_walk_namespace+0xb6/0xe0 drivers/acpi/acpica/nsxfeval.c:554 acpi_bus_scan+0x115/0x150 drivers/acpi/scan.c:2368 acpi_scan_init+0x27f/0x62f drivers/acpi/scan.c:2550 acpi_init+0x6ec/0x77b drivers/acpi/bus.c:1346 do_one_initcall+0xb4/0x2e0 init/main.c:1299 do_initcall_level init/main.c:1372 [inline] do_initcalls init/main.c:1388 [inline] do_basic_setup init/main.c:1407 [inline] kernel_init_freeable+0x519/0x57b init/main.c:1612 kernel_init+0x14/0x120 init/main.c:1503 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 The buggy address belongs to the object at ffff888105dbf0e8 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 19 bytes to the right of 168-byte region [ffff888105dbf0e8, ffff888105dbf190) The buggy address belongs to the page: page:ffffea0004176fc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105dbf flags: 0x200000000000200(slab|node=0|zone=2) raw: 0200000000000200 0000000000000000 dead000000000122 ffff888100140a00 raw: 0000000000000000 0000000000110011 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 1721478996, free_ts 0 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_page_interleave+0xf/0x160 mm/mempolicy.c:2031 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] kmem_cache_alloc+0x2d7/0x310 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xc7/0x6c0 fs/kernfs/dir.c:593 kernfs_new_node fs/kernfs/dir.c:657 [inline] kernfs_create_dir_ns+0x80/0x260 fs/kernfs/dir.c:993 sysfs_create_dir_ns+0x116/0x260 fs/sysfs/dir.c:59 create_dir lib/kobject.c:89 [inline] kobject_add_internal+0x281/0x920 lib/kobject.c:263 kobject_add_varg lib/kobject.c:398 [inline] kobject_add+0x120/0x190 lib/kobject.c:450 device_add+0x2df/0x1b30 drivers/base/core.c:3329 __acpi_device_add+0x4f7/0xb30 drivers/acpi/scan.c:721 acpi_add_single_object+0x9a1/0x16e0 drivers/acpi/scan.c:1826 acpi_bus_check_add+0x154/0x480 drivers/acpi/scan.c:2055 acpi_ns_walk_namespace+0x1d5/0x4d0 drivers/acpi/acpica/nswalk.c:233 page_owner free stack trace missing Memory state around the buggy address: ffff888105dbf080: 00 00 00 00 00 fc fc fc fc fc fc fc fc 00 00 00 ffff888105dbf100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888105dbf180: 00 00 fc fc fc fc fc fc fc fc 00 00 00 00 00 00 ^ ffff888105dbf200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc ffff888105dbf280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 ==================================================================