ERROR: (device loop1): xtSearch: xt_getpage: xtree page corrupt xtLookup: xtSearch returned -5 ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2257:2 index 1073741824 is out of range for type 's64[128]' (aka 'long long[128]') CPU: 0 UID: 0 PID: 6788 Comm: syz.1.32 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (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:233 __ubsan_handle_out_of_bounds+0xd0/0xfc lib/ubsan.c:455 dbAllocBits+0x87c/0x8c4 fs/jfs/jfs_dmap.c:2257 dbAllocDmap fs/jfs/jfs_dmap.c:2034 [inline] dbAllocNear+0x25c/0x350 fs/jfs/jfs_dmap.c:1247 dbAlloc+0x72c/0x9dc fs/jfs/jfs_dmap.c:832 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 mpage_write_folio fs/mpage.c:539 [inline] mpage_writepages+0x5c8/0x18ec fs/mpage.c:664 jfs_writepages+0x30/0x40 fs/jfs/inode.c:270 do_writepages+0x270/0x468 mm/page-writeback.c:2634 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] filemap_write_and_wait_range+0x1b4/0x2a8 mm/filemap.c:691 filemap_invalidate_pages mm/filemap.c:2816 [inline] kiocb_invalidate_pages mm/filemap.c:2835 [inline] generic_file_direct_write+0xe8/0x350 mm/filemap.c:4102 __generic_file_write_iter+0x10c/0x204 mm/filemap.c:4278 generic_file_write_iter+0x10c/0x47c mm/filemap.c:4318 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 ---[ end trace ]--- Unable to handle kernel paging request at virtual address ffff60005aa14e07 KASAN: probably wild-memory-access in range [0xffff0002d50a7038-0xffff0002d50a703f] 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=0000000206ee1000 [ffff60005aa14e07] pgd=0000000000000000, p4d=0000000233946003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 6788 Comm: syz.1.32 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 83400005 (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 : ffff8000a3886cc0 x29: ffff8000a3886d10 x28: ffff0000f6fc6804 x27: 0000000000000004 x26: 000008000000002c x25: dfff800000000000 x24: ffff0000d50a7000 x23: 0000000000000000 x22: 0000000040000000 x21: ffff0002d50a7038 x20: 0000000000000001 x19: 0000000000000001 x18: 1fffe00033797688 x17: 20676e6f6c272061 x16: ffff80008b0155d8 x15: ffff70001261124c x14: 1ffff0001261124c x13: 0000000000000004 x12: ffffffffffffffff x11: 0000000000080000 x10: 000000000000bf80 x9 : ffff8000a539b000 x8 : 1fffe0005aa14e07 x7 : ffff800080563530 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000803bfad0 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 00000000ffffffff Call trace: dbAllocBits+0x78c/0x8c4 fs/jfs/jfs_dmap.c:2257 (P) dbAllocDmap fs/jfs/jfs_dmap.c:2034 [inline] dbAllocNear+0x25c/0x350 fs/jfs/jfs_dmap.c:1247 dbAlloc+0x72c/0x9dc fs/jfs/jfs_dmap.c:832 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 mpage_write_folio fs/mpage.c:539 [inline] mpage_writepages+0x5c8/0x18ec fs/mpage.c:664 jfs_writepages+0x30/0x40 fs/jfs/inode.c:270 do_writepages+0x270/0x468 mm/page-writeback.c:2634 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] filemap_write_and_wait_range+0x1b4/0x2a8 mm/filemap.c:691 filemap_invalidate_pages mm/filemap.c:2816 [inline] kiocb_invalidate_pages mm/filemap.c:2835 [inline] generic_file_direct_write+0xe8/0x350 mm/filemap.c:4102 __generic_file_write_iter+0x10c/0x204 mm/filemap.c:4278 generic_file_write_iter+0x10c/0x47c mm/filemap.c:4318 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __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+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 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