syzbot

gfs2: fsid=syz:syz.s: journal 0 mapped with 5 extents in 0ms
gfs2: fsid=syz:syz.s: first mount done, others may mount
================================================================================
UBSAN: shift-out-of-bounds in fs/gfs2/dir.c:1541:15
shift exponent 32 is too large for 32-bit type 'u32' (aka 'unsigned int')
CPU: 1 PID: 4438 Comm: syz.0.16 Not tainted 6.1.145-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:151
 __ubsan_handle_shift_out_of_bounds+0x2b0/0x34c lib/ubsan.c:321
 dir_e_read fs/gfs2/dir.c:1541 [inline]
 gfs2_dir_read+0x1334/0x1378 fs/gfs2/dir.c:1582
 gfs2_readdir+0x160/0x1c0 fs/gfs2/file.c:115
 iterate_dir+0x1f0/0x4cc fs/readdir.c:-1
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64 fs/readdir.c:354 [inline]
 __arm64_sys_getdents64+0x11c/0x318 fs/readdir.c:354
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
================================================================================
gfs2: fsid=syz:syz.s: fatal: filesystem consistency error
  inode = 12 2341
  function = gfs2_dir_get_hash_table, file = fs/gfs2/dir.c, line = 350
gfs2: fsid=syz:syz.s: G:  s:SH n:2/925 f:qob t:SH d:EX/0 a:0 v:0 r:3 m:20 p:1
gfs2: fsid=syz:syz.s:  H: s:SH f:H e:0 p:4438 [syz.0.16] iterate_dir+0x1f0/0x4cc fs/readdir.c:-1
gfs2: fsid=syz:syz.s:  I: n:12/2341 t:4 f:0x00 d:0x00000006 s:3864 p:0
gfs2: fsid=syz:syz.s: about to withdraw this file system
gfs2: fsid=syz:syz.s: Journal recovery skipped for jid 0 until next mount.
gfs2: fsid=syz:syz.s: Glock dequeues delayed: 0
gfs2: fsid=syz:syz.s: File system withdrawn
CPU: 0 PID: 4438 Comm: syz.0.16 Not tainted 6.1.145-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 gfs2_withdraw+0xf9c/0x13a8 fs/gfs2/util.c:366
 gfs2_consist_inode_i+0xf0/0x10c fs/gfs2/util.c:468
 gfs2_dir_get_hash_table+0x194/0x830 fs/gfs2/dir.c:350
 dir_e_read fs/gfs2/dir.c:1545 [inline]
 gfs2_dir_read+0x2b8/0x1378 fs/gfs2/dir.c:1582
 gfs2_readdir+0x160/0x1c0 fs/gfs2/file.c:115
 iterate_dir+0x1f0/0x4cc fs/readdir.c:-1
 __do_sys_getdents64 fs/readdir.c:369 [inline]
 __se_sys_getdents64 fs/readdir.c:354 [inline]
 __arm64_sys_getdents64+0x11c/0x318 fs/readdir.c:354
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585