loop2: detected capacity change from 0 to 32768
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:2360:2
index -878706688 is out of range for type 'struct iagctl[128]'
CPU: 1 PID: 7905 Comm: syz-executor.2 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:348
 diNewExt+0x280c/0x2b44 fs/jfs/jfs_imap.c:2360
 diAllocExt fs/jfs/jfs_imap.c:1949 [inline]
 diAllocAG+0xa68/0x1b8c fs/jfs/jfs_imap.c:1666
 diAlloc+0x17c/0x15c4 fs/jfs/jfs_imap.c:1587
 ialloc+0x84/0x78c fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x190/0x9f4 fs/jfs/namei.c:225
 vfs_mkdir+0x27c/0x3e4 fs/namei.c:4106
 do_mkdirat+0x248/0x574 fs/namei.c:4129
 __do_sys_mkdirat fs/namei.c:4144 [inline]
 __se_sys_mkdirat fs/namei.c:4142 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4142
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
================================================================================
Unable to handle kernel paging request at virtual address ffff5fffbbfac005
KASAN: maybe wild-memory-access in range [0xfffefffddfd60028-0xfffefffddfd6002f]
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004, 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=00000001af25e000
[ffff5fffbbfac005] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 7905 Comm: syz-executor.2 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : diNewExt+0x281c/0x2b44 fs/jfs/jfs_imap.c:2360
lr : diNewExt+0x280c/0x2b44 fs/jfs/jfs_imap.c:2360
sp : ffff80009aa27520
x29: ffff80009aa27660 x28: dfff800000000000 x27: 1ffff00013544ec0
x26: 1fffe0001a333e08 x25: ffff0000d199f040 x24: ffff0000d199f000
x23: ffff0000d199f044 x22: ffff0000d199f030 x21: ffffffffcba00000
x20: fffefffddfd6002c x19: 00000000cba00000 x18: 1fffe0003682a5ce
x17: ffff80008e4ed000 x16: ffff80008a82b138 x15: ffff7000122a4e88
x14: 1ffff000122a4e88 x13: 0000000000000004 x12: ffffffffffffffff
x11: 0000000000040000 x10: 0000000000020d1d x9 : ffff8000993b3000
x8 : 1fffdfffbbfac005 x7 : ffff80008028df50 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff8000801b8080
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 00000000ffffffff
Call trace:
 diNewExt+0x281c/0x2b44 fs/jfs/jfs_imap.c:2360
 diAllocExt fs/jfs/jfs_imap.c:1949 [inline]
 diAllocAG+0xa68/0x1b8c fs/jfs/jfs_imap.c:1666
 diAlloc+0x17c/0x15c4 fs/jfs/jfs_imap.c:1587
 ialloc+0x84/0x78c fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x190/0x9f4 fs/jfs/namei.c:225
 vfs_mkdir+0x27c/0x3e4 fs/namei.c:4106
 do_mkdirat+0x248/0x574 fs/namei.c:4129
 __do_sys_mkdirat fs/namei.c:4144 [inline]
 __se_sys_mkdirat fs/namei.c:4142 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4142
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
Code: f9404fe8 8b151108 9100b114 d343fe88 (38fc6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f9404fe8 	ldr	x8, [sp, #152]
   4:	8b151108 	add	x8, x8, x21, lsl #4
   8:	9100b114 	add	x20, x8, #0x2c
   c:	d343fe88 	lsr	x8, x20, #3
* 10:	38fc6908 	ldrsb	w8, [x8, x28] <-- trapping instruction