syzbot


KASAN: slab-out-of-bounds Read in hfsplus_bnode_read

Status: upstream: reported C repro on 2023/06/20 20:03
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+eb480a97eb5b35890f06@syzkaller.appspotmail.com
First crash: 533d, last: 9d19h
Bug presence (1)
Date Name Commit Repro Result
2023/06/21 upstream (ToT) e660abd551f1 C [report] KASAN: wild-memory-access Read in hfsplus_bnode_dump
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read C error 2 738d 739d 0/1 upstream: reported C repro on 2022/11/26 10:26
linux-4.14 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read hfsplus C 3 641d 732d 0/1 upstream: reported C repro on 2022/12/03 05:45
upstream KASAN: slab-out-of-bounds Read in hfsplus_bnode_read hfs C error 53 4d19h 739d 0/28 upstream: reported C repro on 2022/11/26 08:07
Last patch testing requests (3)
Created Duration User Patch Repo Result
2024/11/08 21:53 16m retest repro linux-5.15.y report log
2024/11/08 21:53 11m retest repro linux-5.15.y report log
2024/11/08 21:53 12m retest repro linux-5.15.y report log
Fix bisection attempts (7)
Created Duration User Patch Repo Result
2024/09/06 08:32 1h15m bisect fix linux-5.15.y OK (0) job log log
2024/02/24 23:07 1h01m bisect fix linux-5.15.y OK (0) job log log
2024/01/17 04:23 55m bisect fix linux-5.15.y OK (0) job log log
2023/12/17 00:27 1h11m bisect fix linux-5.15.y OK (0) job log log
2023/11/16 02:03 58m bisect fix linux-5.15.y OK (0) job log log
2023/10/14 03:40 1h41m bisect fix linux-5.15.y OK (0) job log log
2023/09/09 07:51 2h29m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
loop0: detected capacity change from 0 to 1024
hfsplus: request for non-existent node 768 in B*Tree
hfsplus: request for non-existent node 768 in B*Tree
==================================================================
BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x85/0x1c0 fs/hfsplus/bnode.c:32
Read of size 8 at addr ffff88814a83efc0 by task syz-executor554/3499

CPU: 1 PID: 3499 Comm: syz-executor554 Not tainted 5.15.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x63/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
 hfsplus_bnode_read+0x85/0x1c0 fs/hfsplus/bnode.c:32
 hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:47 [inline]
 hfsplus_bnode_dump+0x3f7/0x7c0 fs/hfsplus/bnode.c:328
 hfsplus_brec_remove+0x428/0x4e0 fs/hfsplus/brec.c:229
 __hfsplus_delete_attr+0x271/0x450 fs/hfsplus/attributes.c:299
 hfsplus_delete_all_attrs+0x267/0x3c0 fs/hfsplus/attributes.c:378
 hfsplus_delete_cat+0xb83/0xfb0 fs/hfsplus/catalog.c:425
 hfsplus_unlink+0x35f/0x7f0 fs/hfsplus/dir.c:385
 hfsplus_rename+0xc4/0x1b0 fs/hfsplus/dir.c:547
 vfs_rename+0xd32/0x10f0 fs/namei.c:4832
 do_renameat2+0xe0f/0x1700 fs/namei.c:4985
 __do_sys_rename fs/namei.c:5031 [inline]
 __se_sys_rename fs/namei.c:5029 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5029
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f085f6125f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe6635a4d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f085f6125f9
RDX: 00007f085f6118f0 RSI: 00000000200000c0 RDI: 0000000020000080
RBP: 00007f085f685610 R08: 0000000000000692 R09: 0000000000000000
R10: 00007ffe6635a3a0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe6635a6a8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Allocated by task 3499:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc+0x168/0x300 mm/slub.c:4407
 kmalloc include/linux/slab.h:596 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 __hfs_bnode_create+0xf9/0xbb0 fs/hfsplus/bnode.c:416
 hfsplus_bnode_find+0x22e/0xe80 fs/hfsplus/bnode.c:497
 hfsplus_brec_find+0x17f/0x570 fs/hfsplus/bfind.c:183
 hfsplus_find_attr fs/hfsplus/attributes.c:160 [inline]
 hfsplus_delete_all_attrs+0x23e/0x3c0 fs/hfsplus/attributes.c:371
 hfsplus_delete_cat+0xb83/0xfb0 fs/hfsplus/catalog.c:425
 hfsplus_unlink+0x35f/0x7f0 fs/hfsplus/dir.c:385
 hfsplus_rename+0xc4/0x1b0 fs/hfsplus/dir.c:547
 vfs_rename+0xd32/0x10f0 fs/namei.c:4832
 do_renameat2+0xe0f/0x1700 fs/namei.c:4985
 __do_sys_rename fs/namei.c:5031 [inline]
 __se_sys_rename fs/namei.c:5029 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5029
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Last potentially related work creation:
 kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
 insert_work+0x54/0x3e0 kernel/workqueue.c:1366
 __queue_work+0x963/0xd00 kernel/workqueue.c:1532
 queue_work_on+0x14b/0x250 kernel/workqueue.c:1559
 queue_work include/linux/workqueue.h:512 [inline]
 call_usermodehelper_exec+0x269/0x450 kernel/umh.c:435
 kobject_uevent_env+0x69e/0x8d0 lib/kobject_uevent.c:618
 driver_register+0x35b/0x3a0 drivers/base/driver.c:248
 __hid_register_driver+0x126/0x170 drivers/hid/hid-core.c:2577
 ryos_init+0x76/0xa4 drivers/hid/hid-roccat-ryos.c:224
 do_one_initcall+0x22b/0x7a0 init/main.c:1299
 do_initcall_level+0x157/0x207 init/main.c:1372
 do_initcalls+0x49/0x86 init/main.c:1388
 kernel_init_freeable+0x425/0x5b5 init/main.c:1612
 kernel_init+0x19/0x290 init/main.c:1503
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

The buggy address belongs to the object at ffff88814a83ef00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 0 bytes to the right of
 192-byte region [ffff88814a83ef00, ffff88814a83efc0)
The buggy address belongs to the page:
page:ffffea00052a0f80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a83e
flags: 0x57ff00000000200(slab|node=1|zone=2|lastcpupid=0x7ff)
raw: 057ff00000000200 ffffea000529f180 0000000600000006 ffff888011c41a00
raw: 0000000000000000 0000000080100010 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 12847449764, free_ts 0
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421
 alloc_page_interleave+0x22/0x1c0 mm/mempolicy.c:2031
 alloc_slab_page mm/slub.c:1775 [inline]
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0xbb/0x4b0 mm/slub.c:1975
 ___slab_alloc+0x6f6/0xe10 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_trace+0x1a0/0x290 mm/slub.c:3245
 kmalloc include/linux/slab.h:591 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 call_usermodehelper_setup+0x8a/0x260 kernel/umh.c:365
 kobject_uevent_env+0x681/0x8d0 lib/kobject_uevent.c:614
 driver_register+0x35b/0x3a0 drivers/base/driver.c:248
 __hid_register_driver+0x126/0x170 drivers/hid/hid-core.c:2577
 arvo_init+0x76/0xa4 drivers/hid/hid-roccat-arvo.c:441
 do_one_initcall+0x22b/0x7a0 init/main.c:1299
 do_initcall_level+0x157/0x207 init/main.c:1372
 do_initcalls+0x49/0x86 init/main.c:1388
 kernel_init_freeable+0x425/0x5b5 init/main.c:1612
 kernel_init+0x19/0x290 init/main.c:1503
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88814a83ee80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88814a83ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88814a83ef80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
                                           ^
 ffff88814a83f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88814a83f080: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

Crashes (35):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/03/18 19:36 linux-5.15.y b95c01af2113 baa80228 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2023/06/20 20:02 linux-5.15.y 471e639e59d1 09ffe269 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/10/20 20:43 linux-5.15.y 584a40a22cb9 cd6fc0a3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2023/06/27 12:07 linux-5.15.y f67653019430 4cd5bb25 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/06/30 06:44 linux-5.15.y 4878aadf2d15 757f06b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/10/07 20:24 linux-5.15.y 3a5928702e71 d7906eff .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/10/04 11:12 linux-5.15.y 3a5928702e71 d7906eff .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/08/02 21:35 linux-5.15.y 7e89efd3ae1c 1e9c4cf3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/05/05 15:18 linux-5.15.y 284087d4f7d5 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/05/02 11:51 linux-5.15.y b925f60c6ee7 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/04/20 08:00 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/04/19 01:01 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/04/17 09:45 linux-5.15.y fa3df276cd36 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/03/18 18:19 linux-5.15.y b95c01af2113 baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/11/25 06:42 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/11/24 23:06 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/11/16 20:49 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/11/10 01:02 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/10/04 17:01 linux-5.15.y 3a5928702e71 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/09/24 11:26 linux-5.15.y 3a5928702e71 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/09/24 06:19 linux-5.15.y 3a5928702e71 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/09/21 00:26 linux-5.15.y 3a5928702e71 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/08/03 06:29 linux-5.15.y 7e89efd3ae1c 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/05/20 23:37 linux-5.15.y 83655231580b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/05/14 16:39 linux-5.15.y 284087d4f7d5 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/05/06 04:05 linux-5.15.y 284087d4f7d5 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/04/25 09:40 linux-5.15.y c52b9710c83d 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/04/19 03:18 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Read in hfsplus_bnode_read
2024/06/30 02:42 linux-5.15.y 4878aadf2d15 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/05/31 05:14 linux-5.15.y c61bd26ae81a 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: use-after-free Read in hfsplus_bnode_read
2024/04/28 21:14 linux-5.15.y b925f60c6ee7 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/04/26 09:11 linux-5.15.y c52b9710c83d 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/04/26 09:11 linux-5.15.y c52b9710c83d 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/04/04 19:33 linux-5.15.y 9465fef4ae35 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
2024/03/27 02:43 linux-5.15.y 9465fef4ae35 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: slab-out-of-bounds Write in hfsplus_bnode_read
* Struck through repros no longer work on HEAD.