------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2245:2
index 671088640 is out of range for type 's64[128]' (aka 'long long[128]')
CPU: 1 UID: 0 PID: 7005 Comm: syz.3.117 Not tainted 6.15.0-rc7-syzkaller-g187899f4124a #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:231
 __ubsan_handle_out_of_bounds+0xd0/0xfc lib/ubsan.c:453
 dbAllocBits+0x87c/0x8c4 fs/jfs/jfs_dmap.c:2245
 dbAllocDmap fs/jfs/jfs_dmap.c:2022 [inline]
 dbAllocNear+0x25c/0x350 fs/jfs/jfs_dmap.c:1243
 dbAlloc+0x72c/0x9dc fs/jfs/jfs_dmap.c:828
 extBalloc fs/jfs/jfs_extent.c:336 [inline]
 extAlloc+0x42c/0xdc8 fs/jfs/jfs_extent.c:127
 jfs_get_block+0x2bc/0x8b8 fs/jfs/inode.c:248
 __block_write_begin_int+0x53c/0x15e8 fs/buffer.c:2149
 block_write_begin+0xa0/0x128 fs/buffer.c:2260
 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:299
 generic_perform_write+0x23c/0x79c mm/filemap.c:4103
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4220
 generic_file_write_iter+0x104/0x470 mm/filemap.c:4246
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x62c/0x97c fs/read_write.c:684
 ksys_pwrite64 fs/read_write.c:791 [inline]
 __do_sys_pwrite64 fs/read_write.c:799 [inline]
 __se_sys_pwrite64 fs/read_write.c:796 [inline]
 __arm64_sys_pwrite64+0x170/0x208 fs/read_write.c:796
 __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+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
---[ end trace ]---
Unable to handle kernel paging request at virtual address ffff60004615fe07
KASAN: probably wild-memory-access in range [0xffff000230aff038-0xffff000230aff03f]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000002079fa000
[ffff60004615fe07] pgd=0000000000000000, p4d=0000000233a00003, pud=0000000000000000
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 7005 Comm: syz.3.117 Not tainted 6.15.0-rc7-syzkaller-g187899f4124a #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dbAllocBits+0x78c/0x8c4 fs/jfs/jfs_dmap.c:2245
lr : dbAllocBits+0x87c/0x8c4 fs/jfs/jfs_dmap.c:2245
sp : ffff8000a0da7080
x29: ffff8000a0da70d0 x28: ffff0000d3ee7804 x27: 0000000000000004
x26: 000005000000002c x25: dfff800000000000 x24: ffff0000f0aff000
x23: 0000000000000000 x22: 0000000028000000 x21: ffff000230aff038
x20: 0000000000000001 x19: 0000000000000001 x18: 00000000ffffffff
x17: 0000000000000000 x16: ffff80008adbe9e4 x15: ffff700012553c54
x14: 1ffff00012553c54 x13: 0000000000000004 x12: ffffffffffffffff
x11: 0000000000080000 x10: 000000000000e7df x9 : ffff8000a5fc0000
x8 : 1fffe0004615fe07 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000a0da6998 x4 : ffff80008f415ba0 x3 : ffff8000803b71bc
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 00000000ffffffff
Call trace:
 dbAllocBits+0x78c/0x8c4 fs/jfs/jfs_dmap.c:2245 (P)
 dbAllocDmap fs/jfs/jfs_dmap.c:2022 [inline]
 dbAllocNear+0x25c/0x350 fs/jfs/jfs_dmap.c:1243
 dbAlloc+0x72c/0x9dc fs/jfs/jfs_dmap.c:828
 extBalloc fs/jfs/jfs_extent.c:336 [inline]
 extAlloc+0x42c/0xdc8 fs/jfs/jfs_extent.c:127
 jfs_get_block+0x2bc/0x8b8 fs/jfs/inode.c:248
 __block_write_begin_int+0x53c/0x15e8 fs/buffer.c:2149
 block_write_begin+0xa0/0x128 fs/buffer.c:2260
 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:299
 generic_perform_write+0x23c/0x79c mm/filemap.c:4103
 __generic_file_write_iter+0xfc/0x204 mm/filemap.c:4220
 generic_file_write_iter+0x104/0x470 mm/filemap.c:4246
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x62c/0x97c fs/read_write.c:684
 ksys_pwrite64 fs/read_write.c:791 [inline]
 __do_sys_pwrite64 fs/read_write.c:799 [inline]
 __se_sys_pwrite64 fs/read_write.c:796 [inline]
 __arm64_sys_pwrite64+0x170/0x208 fs/read_write.c:796
 __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+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 8b160f08 93407e93 9100e115 d343fea8 (38796908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	8b160f08 	add	x8, x24, x22, lsl #3
   4:	93407e93 	sxtw	x19, w20
   8:	9100e115 	add	x21, x8, #0x38
   c:	d343fea8 	lsr	x8, x21, #3
* 10:	38796908 	ldrb	w8, [x8, x25] <-- trapping instruction