BUG at fs/jfs/jfs_dmap.c:3090 assert(nb <= DBWORD)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3090!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 5920 Comm: syz.2.350 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dbFindBits+0x1b8/0x1e4 fs/jfs/jfs_dmap.c:3090
lr : dbFindBits+0x1b8/0x1e4 fs/jfs/jfs_dmap.c:3090
sp : ffff800020f47730
x29: ffff800020f47730 x28: 00000000ffffffff x27: 1ffff000041e8ef0
x26: dfff800000000000 x25: ffff0000e921e800 x24: 000000000000000a
x23: 0000000000000000 x22: ffff0000d13cc000 x21: 00000000ffffffff
x20: 0000000000000400 x19: 000000000000000a x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011b4e3fc x15: 00000000ffffffff
x14: ffff0000ce48d1c0 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : acb930c50c1a9800
x8 : acb930c50c1a9800 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020f46e98 x4 : ffff800014c50660 x3 : ffff80000aa0f0fc
x2 : ffff0001b4196d10 x1 : 0000000100000000 x0 : 0000000000000032
Call trace:
 dbFindBits+0x1b8/0x1e4 fs/jfs/jfs_dmap.c:3090
 dbAllocDmapLev+0x194/0x414 fs/jfs/jfs_dmap.c:2054
 dbAllocCtl+0x12c/0x8c4 fs/jfs/jfs_dmap.c:1894
 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1432
 dbDiscardAG+0x240/0x728 fs/jfs/jfs_dmap.c:1681
 jfs_ioc_trim+0x3f4/0x5f0 fs/jfs/jfs_discard.c:105
 jfs_ioctl+0x350/0x574 fs/jfs/ioctl.c:132
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: d0043523 91340063 52818242 9597108e (d4210000) 
---[ end trace 3e2469c05d4a0e09 ]---