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KASAN: stack-out-of-bounds Read in gfs2_file_read_iter (2)

Status: upstream: reported on 2024/04/21 05:24
Reported-by: syzbot+0e28304b093273945196@syzkaller.appspotmail.com
First crash: 511d, last: 9d05h
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter 17 15 728d 742d 0/3 auto-obsoleted due to no activity on 2023/11/25 16:09

Sample crash report:
==================================================================
BUG: KASAN: stack-out-of-bounds in should_fault_in_pages fs/gfs2/file.c:785 [inline]
BUG: KASAN: stack-out-of-bounds in gfs2_file_read_iter+0x8c1/0xd70 fs/gfs2/file.c:995
Read of size 8 at addr ffffc90003bfee90 by task syz.4.28/4524

CPU: 0 PID: 4524 Comm: syz.4.28 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 should_fault_in_pages fs/gfs2/file.c:785 [inline]
 gfs2_file_read_iter+0x8c1/0xd70 fs/gfs2/file.c:995
 __kernel_read+0x4eb/0x910 fs/read_write.c:443
 integrity_kernel_read+0x86/0xd0 security/integrity/iint.c:228
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
 ima_calc_file_hash+0x1546/0x18e0 security/integrity/ima/ima_crypto.c:573
 ima_collect_measurement+0x2ef/0x760 security/integrity/ima/ima_api.c:255
 process_measurement+0xfb9/0x1a10 security/integrity/ima/ima_main.c:351
 ima_file_check+0xc1/0x100 security/integrity/ima/ima_main.c:533
 do_open fs/namei.c:3610 [inline]
 path_openat+0x2735/0x2f30 fs/namei.c:3742
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769
 do_sys_openat2+0x142/0x4a0 fs/open.c:1253
 do_sys_open fs/open.c:1269 [inline]
 __do_sys_openat fs/open.c:1285 [inline]
 __se_sys_openat fs/open.c:1280 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1280
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4581dc4be9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f457fff2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4581ffc090 RCX: 00007f4581dc4be9
RDX: 0000000000000700 RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007f4581e47e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4581ffc128 R14: 00007f4581ffc090 R15: 00007fff5e0b7b38
 </TASK>


addr ffffc90003bfee90 is located in stack of task syz.4.28/4524 at offset 48 in frame:
 __kernel_read+0x0/0x910

this frame has 3 objects:
 [32, 48) 'iov'
 [64, 112) 'kiocb'
 [144, 184) 'iter'

Memory state around the buggy address:
 ffffc90003bfed80: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003bfee00: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
>ffffc90003bfee80: 00 00 f2 f2 00 00 00 00 00 00 f2 f2 f2 f2 00 00
                         ^
 ffffc90003bfef00: 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
 ffffc90003bfef80: 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00
==================================================================

Crashes (244):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/05 01:58 linux-5.15.y 7a6c2d093c45 d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/09/03 13:45 linux-5.15.y 01879f56bdde 96a211bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/08/23 21:30 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/08/13 21:42 linux-5.15.y c79648372d02 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/08/08 08:39 linux-5.15.y c79648372d02 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/08/06 15:49 linux-5.15.y c79648372d02 ffe1dd46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/08/02 09:33 linux-5.15.y c79648372d02 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/07/28 23:08 linux-5.15.y c79648372d02 6654ea9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/07/26 17:30 linux-5.15.y c79648372d02 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/07/26 03:54 linux-5.15.y c79648372d02 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/07/21 02:47 linux-5.15.y c79648372d02 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/07/11 04:25 linux-5.15.y 2f693b607545 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/07/10 12:57 linux-5.15.y 3dea0e7f549e 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/07/03 00:43 linux-5.15.y 3dea0e7f549e bc80e4f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/27 04:53 linux-5.15.y 1c700860e8bc 803ce19b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/05 00:05 linux-5.15.y 1c700860e8bc 6b6b5f21 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/04 14:57 linux-5.15.y 1c700860e8bc e565f08d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/04 11:03 linux-5.15.y 98f47d0e9b8c e565f08d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/03 01:27 linux-5.15.y 98f47d0e9b8c a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/02 15:27 linux-5.15.y 98f47d0e9b8c b396b4bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/02 11:53 linux-5.15.y 98f47d0e9b8c b396b4bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/01 00:08 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/05/30 07:20 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/05/28 23:45 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/04/29 10:24 linux-5.15.y f7347f400572 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/04/25 00:12 linux-5.15.y f7347f400572 9882047a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/04/19 02:15 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/03/31 21:28 linux-5.15.y 0c935c049b5c d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/03/16 09:19 linux-5.15.y 0c935c049b5c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/03/11 09:30 linux-5.15.y c16c81c81336 16256247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/03/05 04:00 linux-5.15.y c16c81c81336 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/02/21 17:03 linux-5.15.y c16c81c81336 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/02/16 18:53 linux-5.15.y c16c81c81336 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/01/30 15:05 linux-5.15.y 003148680b79 afe4eff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/01/26 13:40 linux-5.15.y 003148680b79 9fbd772e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2024/04/21 05:23 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/06/19 15:58 linux-5.15.y 1c700860e8bc ed3e87f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/05/27 21:16 linux-5.15.y 98f47d0e9b8c 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/04/30 04:33 linux-5.15.y f7347f400572 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/04/28 14:49 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/04/24 19:04 linux-5.15.y f7347f400572 9882047a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/03/26 09:51 linux-5.15.y 0c935c049b5c 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/02/21 11:28 linux-5.15.y c16c81c81336 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/02/21 11:03 linux-5.15.y c16c81c81336 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
2025/02/01 14:13 linux-5.15.y 003148680b79 aa47157c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: stack-out-of-bounds Read in gfs2_file_read_iter
* Struck through repros no longer work on HEAD.