================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2257:2
index 623902720 is out of range for type 's64[128]' (aka 'long long[128]')
CPU: 0 PID: 5837 Comm: syz.6.220 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:151
 __ubsan_handle_out_of_bounds+0xd0/0xfc lib/ubsan.c:282
 dbAllocBits+0x87c/0x8c4 fs/jfs/jfs_dmap.c:2257
 dbAllocDmap fs/jfs/jfs_dmap.c:2034 [inline]
 dbAllocDmapLev+0x178/0x36c fs/jfs/jfs_dmap.c:1988
 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+0x3dc/0x5d0 fs/jfs/jfs_discard.c:105
 jfs_ioctl+0x2e4/0x434 fs/jfs/ioctl.c:131
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __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+0x58/0x138 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
================================================================================
Unable to handle kernel paging request at virtual address ffff600044407e07
KASAN: maybe wild-memory-access in range [0xffff00022203f038-0xffff00022203f03f]
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
  CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000020e1fd000
[ffff600044407e07] pgd=0000000233fb0003, p4d=0000000233fb0003, pud=0000000000000000
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5837 Comm: syz.6.220 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : dbAllocBits+0x78c/0x8c4 fs/jfs/jfs_dmap.c:2257
lr : dbAllocBits+0x87c/0x8c4 fs/jfs/jfs_dmap.c:2257
sp : ffff800021e27820
x29: ffff800021e27870 x28: 0000000080000000 x27: 0000000000000005
x26: 000004a600000400 x25: dfff800000000000 x24: ffff0000f883f000
x23: 0000000000000000 x22: 0000000025300000 x21: ffff00022203f038
x20: 0000000000000400 x19: 0000000000000400 x18: ffff800011a5bd40
x17: 1fffe00033ee7b7e x16: ffff800008191ac0 x15: 0000000040000000
x14: 0000000000000002 x13: 1ffff00002a0a0b1 x12: 0000000000080000
x11: 000000000001a8b2 x10: ffff8000283db000 x9 : ffff800008191b44
x8 : 1fffe00044407e07 x7 : ffff8000082532dc x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800008191b0c
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 00000000ffffffff
Call trace:
 dbAllocBits+0x78c/0x8c4 fs/jfs/jfs_dmap.c:2257
 dbAllocDmap fs/jfs/jfs_dmap.c:2034 [inline]
 dbAllocDmapLev+0x178/0x36c fs/jfs/jfs_dmap.c:1988
 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+0x3dc/0x5d0 fs/jfs/jfs_discard.c:105
 jfs_ioctl+0x2e4/0x434 fs/jfs/ioctl.c:131
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __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+0x58/0x138 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: 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