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BUG: KASAN: vmalloc-out-of-bounds in gfs2_dump_glock+0x1363/0x1920 fs/gfs2/glock.c:2423
Read of size 8 at addr ffffc90003467840 by task syz.1.84/6262

CPU: 0 PID: 6262 Comm: syz.1.84 Not tainted 6.6.99-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xac/0x200 mm/kasan/report.c:466
 kasan_report+0x117/0x150 mm/kasan/report.c:579
 gfs2_dump_glock+0x1363/0x1920 fs/gfs2/glock.c:2423
 gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:455
 gfs2_dirent_scan+0x525/0x650 fs/gfs2/dir.c:602
 gfs2_dirent_search+0x2e1/0x7e0 fs/gfs2/dir.c:850
 gfs2_dir_search+0x4d/0x220 fs/gfs2/dir.c:1650
 gfs2_lookupi+0x3d9/0x5a0 fs/gfs2/inode.c:339
 __gfs2_lookup+0x90/0x270 fs/gfs2/inode.c:896
 __lookup_slow+0x281/0x3b0 fs/namei.c:1694
 lookup_slow+0x53/0x70 fs/namei.c:1711
 walk_component fs/namei.c:2002 [inline]
 link_path_walk+0x970/0xe00 fs/namei.c:2329
 path_lookupat+0x9d/0x440 fs/namei.c:2482
 do_o_path+0x98/0x1f0 fs/namei.c:3760
 path_openat+0x2a31/0x3190 fs/namei.c:3782
 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816
 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419
 do_sys_open fs/open.c:1434 [inline]
 __do_sys_openat fs/open.c:1450 [inline]
 __se_sys_openat fs/open.c:1445 [inline]
 __x64_sys_openat+0x139/0x160 fs/open.c:1445
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7d0c58e9a9
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:00007f7d0d3e5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7d0c7b6080 RCX: 00007f7d0c58e9a9
RDX: 0000000000200002 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007f7d0c610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f7d0c7b6080 R15: 00007ffd337830a8
 </TASK>

The buggy address ffffc90003467840 belongs to a vmalloc virtual mapping
Memory state around the buggy address:
 ffffc90003467700: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc90003467780: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
>ffffc90003467800: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                                           ^
 ffffc90003467880: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc90003467900: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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