gfs2: fsid=syz:syz.0: journal 0 mapped with 16 extents
gfs2: fsid=syz:syz.0: jid=0, already locked for use
gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
WARNING: CPU: 0 PID: 2936 at fs/gfs2/rgrp.c:274 gfs2_rbm_from_block+0x6a/0x80 fs/gfs2/rgrp.c:271
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 2936 Comm: syz-executor.0 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x87/0xba lib/dump_stack.c:113
 panic+0xef/0x24e kernel/panic.c:184
 __warn.cold.7+0x31/0x37 kernel/panic.c:536
 report_bug+0xb6/0xe0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0xfe/0x180 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:gfs2_rbm_from_block+0x6a/0x80 fs/gfs2/rgrp.c:274
Code: 89 4f 08 4d 8b 48 60 89 c8 41 f7 b1 3c 01 00 00 89 47 0c 49 8b 50 60 0f af 82 3c 01 00 00 29 c1 89 4f 08 89 f0 c3 55 48 89 e5 <0f> 0b be ea ff ff ff 5d 89 f0 c3 be f9 ff ff ff eb e7 0f 1f 40 00
RSP: 0018:ffffc90000e1fbf0 EFLAGS: 00010286
RAX: ffffffffffffffff RBX: 0000000000000000 RCX: 0000000000000013
RDX: 00000000ffffffff RSI: 0000000000000012 RDI: ffffc90000e1fc00
RBP: ffffc90000e1fbf0 R08: ffff88023336f480 R09: 00000000973deba5
R10: ffff88022cecd138 R11: 0000000000000000 R12: ffff88023336f480
R13: 0000000000000003 R14: 0000000000000012 R15: ffff88022e370000
 gfs2_check_blk_type+0x73/0x100 fs/gfs2/rgrp.c:2540
 gfs2_inode_lookup+0x34d/0x410 fs/gfs2/inode.c:165
 gfs2_lookup_by_inum+0x1a/0x60 fs/gfs2/inode.c:225
 gfs2_get_dentry.isra.2+0x15/0x30 fs/gfs2/export.c:140
 gfs2_fh_to_dentry fs/gfs2/export.c:163 [inline]
 gfs2_fh_to_dentry+0x6d/0x90 fs/gfs2/export.c:147
 exportfs_decode_fh+0x68/0x370 fs/exportfs/expfs.c:432
 do_handle_to_path fs/fhandle.c:152 [inline]
 handle_to_path fs/fhandle.c:207 [inline]
 do_handle_open+0x151/0x310 fs/fhandle.c:223
 __do_sys_open_by_handle_at fs/fhandle.c:265 [inline]
 __se_sys_open_by_handle_at fs/fhandle.c:256 [inline]
 __x64_sys_open_by_handle_at+0x17/0x20 fs/fhandle.c:256
 do_syscall_64+0x69/0x180 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f8431380da9
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:00007f8430f020c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000130
RAX: ffffffffffffffda RBX: 00007f84314aef80 RCX: 00007f8431380da9
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f84313cd47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007f84314aef80 R15: 00007ffe4f993978
Kernel Offset: disabled
Rebooting in 86400 seconds..