loop0: detected capacity change from 0 to 32768
BUG at fs/jfs/jfs_dmap.c:3039 assert(bitno < 32)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3039!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5007 Comm: syz.0.212 Not tainted 6.1.131-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+0x1e0/0x1e4 fs/jfs/jfs_dmap.c:3039
lr : dbFindBits+0x1e0/0x1e4 fs/jfs/jfs_dmap.c:3039
sp : ffff800022456fb0
x29: ffff800022456fb0 x28: 00000000ffffffff x27: 1ffff0000448ae00
x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000000
x23: ffff8000160c2530 x22: 0000000000000020 x21: 0000000000000000
x20: 0000000000000001 x19: 0000000000000000 x18: ffff800022456580
x17: 0000000000000000 x16: ffff800012327ebc x15: 0000000000000002
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000
x11: 0000000000015147 x10: ffff800021bd9000 x9 : 9b32697a6bd2f500
x8 : 9b32697a6bd2f500 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000224568b8 x4 : ffff800015be5320 x3 : ffff80000ab34098
x2 : ffff0001b3cc2cd0 x1 : 0000000100000000 x0 : 0000000000000030
Call trace:
 dbFindBits+0x1e0/0x1e4 fs/jfs/jfs_dmap.c:3039
 dbAllocDmapLev+0x194/0x414 fs/jfs/jfs_dmap.c:1988
 dbAllocCtl+0x12c/0x890 fs/jfs/jfs_dmap.c:1828
 dbAllocAG+0x208/0xe4c fs/jfs/jfs_dmap.c:1364
 dbAlloc+0x520/0xb68 fs/jfs/jfs_dmap.c:888
 dtSplitUp fs/jfs/jfs_dtree.c:981 [inline]
 dtInsert+0xb14/0x576c fs/jfs/jfs_dtree.c:870
 jfs_link+0x32c/0x5f0 fs/jfs/namei.c:825
 vfs_link+0x598/0x74c fs/namei.c:4599
 do_linkat+0x2e0/0x620 fs/namei.c:4670
 __do_sys_linkat fs/namei.c:4698 [inline]
 __se_sys_linkat fs/namei.c:4695 [inline]
 __arm64_sys_linkat+0xe4/0x100 fs/namei.c:4695
 __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+0x58/0x168 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
Code: b0046ec3 91220063 52817be2 9593dc8e (d4210000) 
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