BUG at fs/jfs/jfs_dmap.c:3002 assert(n < 4)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3002!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12567 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:dbFindLeaf+0x147/0x240 fs/jfs/jfs_dmap.c:3002
Code: fe 83 fb 04 75 96 e8 88 2f ed fe 48 c7 c1 e0 f7 9a 88 ba ba 0b 00 00 48 c7 c6 60 f7 9a 88 48 c7 c7 a0 f7 9a 88 e8 d4 60 7e 05 <0f> 0b e8 62 2f ed fe 41 83 ef 01 31 ff 8d 04 ad 01 00 00 00 44 89
RSP: 0018:ffff88802734f5c0 EFLAGS: 00010286
RAX: 000000000000002b RBX: 0000000000000004 RCX: 0000000000000000
RDX: 000000000000da94 RSI: ffffffff814dff01 RDI: ffffed1004e69eaa
RBP: 0000000000000060 R08: 000000000000002b R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880af10f010
R13: 0000000000000004 R14: 00000000ffffffff R15: 0000000000000001
FS:  00007f65cfaa4700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555565cb3b8 CR3: 000000004ff17000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 dbAllocDmapLev+0xaf/0x330 fs/jfs/jfs_dmap.c:2010
 dbAlloc+0x82b/0xb00 fs/jfs/jfs_dmap.c:830
 ea_write+0x4b8/0xbd0 fs/jfs/xattr.c:245
 ea_put fs/jfs/xattr.c:623 [inline]
 __jfs_setxattr+0xe48/0xf50 fs/jfs/xattr.c:796
 __jfs_xattr_set+0xc9/0x150 fs/jfs/xattr.c:930
 __vfs_setxattr+0x10e/0x170 fs/xattr.c:149
 __vfs_setxattr_noperm+0x11a/0x420 fs/xattr.c:180
 __vfs_setxattr_locked+0x176/0x250 fs/xattr.c:238
 vfs_setxattr+0xe5/0x270 fs/xattr.c:255
 setxattr+0x23d/0x330 fs/xattr.c:520
 path_setxattr+0x170/0x190 fs/xattr.c:539
 __do_sys_setxattr fs/xattr.c:554 [inline]
 __se_sys_setxattr fs/xattr.c:550 [inline]
 __x64_sys_setxattr+0xc0/0x160 fs/xattr.c:550
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f65d1531639
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f65cfaa4168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f65d1651f80 RCX: 00007f65d1531639
RDX: 0000000020000380 RSI: 00000000200000c0 RDI: 0000000020000080
RBP: 00007f65d158c7e1 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000c001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe8533719f R14: 00007f65cfaa4300 R15: 0000000000022000
Modules linked in:
---[ end trace 80f1a369178401d9 ]---
RIP: 0010:dbFindLeaf+0x147/0x240 fs/jfs/jfs_dmap.c:3002
Code: fe 83 fb 04 75 96 e8 88 2f ed fe 48 c7 c1 e0 f7 9a 88 ba ba 0b 00 00 48 c7 c6 60 f7 9a 88 48 c7 c7 a0 f7 9a 88 e8 d4 60 7e 05 <0f> 0b e8 62 2f ed fe 41 83 ef 01 31 ff 8d 04 ad 01 00 00 00 44 89
RSP: 0018:ffff88802734f5c0 EFLAGS: 00010286
RAX: 000000000000002b RBX: 0000000000000004 RCX: 0000000000000000
RDX: 000000000000da94 RSI: ffffffff814dff01 RDI: ffffed1004e69eaa
RBP: 0000000000000060 R08: 000000000000002b R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880af10f010
R13: 0000000000000004 R14: 00000000ffffffff R15: 0000000000000001
FS:  00007f65cfaa4700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc141697718 CR3: 000000004ff17000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400