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BUG: KASAN: stack-out-of-bounds in should_fault_in_pages fs/gfs2/file.c:784 [inline]
BUG: KASAN: stack-out-of-bounds in gfs2_file_read_iter+0x938/0xe40 fs/gfs2/file.c:994
Read of size 8 at addr ffffc9000417edd0 by task syz-executor.5/30742

CPU: 1 PID: 30742 Comm: syz-executor.5 Not tainted 5.15.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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
 should_fault_in_pages fs/gfs2/file.c:784 [inline]
 gfs2_file_read_iter+0x938/0xe40 fs/gfs2/file.c:994
 __kernel_read+0x5ac/0xa60 fs/read_write.c:443
 integrity_kernel_read+0xac/0xf0 security/integrity/iint.c:202
 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+0xa5d/0x1c00 security/integrity/ima/ima_crypto.c:573
 ima_collect_measurement+0x293/0x530 security/integrity/ima/ima_api.c:254
 process_measurement+0x1038/0x1d60 security/integrity/ima/ima_main.c:337
 ima_file_check+0xf3/0x180 security/integrity/ima/ima_main.c:519
 do_open fs/namei.c:3540 [inline]
 path_openat+0x2745/0x2f20 fs/namei.c:3672
 do_filp_open+0x21c/0x460 fs/namei.c:3699
 do_sys_openat2+0x13b/0x500 fs/open.c:1211
 do_sys_open fs/open.c:1227 [inline]
 __do_sys_open fs/open.c:1235 [inline]
 __se_sys_open fs/open.c:1231 [inline]
 __x64_sys_open+0x221/0x270 fs/open.c:1231
 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: 0033:0x7f3a0c5bfae9
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:00007f3a0ab410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f3a0c6def80 RCX: 00007f3a0c5bfae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f3a0c60b47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3a0c6def80 R15: 00007ffd54b8ef38
 </TASK>


addr ffffc9000417edd0 is located in stack of task syz-executor.5/30742 at offset 48 in frame:
 __kernel_read+0x0/0xa60

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

Memory state around the buggy address:
 ffffc9000417ec80: 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 00 00 00 00
 ffffc9000417ed00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000417ed80: 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2 00 00 00 00
                                                 ^
 ffffc9000417ee00: 00 00 f2 f2 f2 f2 00 00 00 00 00 f3 f3 f3 f3 f3
 ffffc9000417ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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