BUG at fs/jfs/jfs_dmap.c:3021 assert(nb <= DBWORD)
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kernel BUG at fs/jfs/jfs_dmap.c:3021!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 8313 Comm: syz.3.268 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : dbFindBits+0x184/0x1b0 fs/jfs/jfs_dmap.c:3021
lr : dbFindBits+0x184/0x1b0 fs/jfs/jfs_dmap.c:3021
sp : ffff80009e147890
x29: ffff80009e147890 x28: 00000000ffffffff x27: dfff800000000000
x26: ffff0000d473b800 x25: ffff0000d473b021 x24: 000000000000000a
x23: 0000000000000000 x22: ffff0000d2e7d000 x21: 0000000000000400
x20: 00000000ffffffff x19: 000000000000000a x18: 0000000000000000
x17: 0000000000000000 x16: ffff80008b007340 x15: 0000000000000001
x14: 1ffff00013c28e88 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000ff0100 x9 : 45af6eedbfb96d00
x8 : 45af6eedbfb96d00 x7 : ffff800080563af4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807de560
x2 : 0000000000000002 x1 : 0000000100000000 x0 : 0000000000000032
Call trace:
 dbFindBits+0x184/0x1b0 fs/jfs/jfs_dmap.c:3021 (P)
 dbAllocDmapLev+0x13c/0x36c fs/jfs/jfs_dmap.c:1985
 dbAllocCtl+0x130/0x8e0 fs/jfs/jfs_dmap.c:1825
 dbAllocAG+0x1c0/0xdc0 fs/jfs/jfs_dmap.c:1353
 dbDiscardAG+0x1e0/0x66c fs/jfs/jfs_dmap.c:1608
 jfs_ioc_trim+0x3e8/0x5e0 fs/jfs/jfs_discard.c:106
 jfs_ioctl+0x2e4/0x478 fs/jfs/ioctl.c:131
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: 9004c3a3 91310063 528179a2 97945f5d (d4210000) 
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