loop0: detected capacity change from 0 to 32768 ================================================================== BUG: KASAN: slab-use-after-free in diWrite+0x1209/0x1f40 fs/jfs/jfs_imap.c:753 Write of size 32 at addr ffff888059cc10c0 by task syz.0.16/5941 CPU: 0 UID: 0 PID: 5941 Comm: syz.0.16 Not tainted 6.16.0-rc3-syzkaller-g78f4e737a53e #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:189 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106 diWrite+0x1209/0x1f40 fs/jfs/jfs_imap.c:753 txCommit+0x852/0x5430 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices+0x8ce/0xce0 fs/jfs/jfs_dtree.c:2674 jfs_readdir+0x1d8f/0x3ae0 fs/jfs/jfs_dtree.c:3031 wrap_directory_iterator+0x93/0xe0 fs/readdir.c:65 iterate_dir+0x5ac/0x770 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:410 [inline] __se_sys_getdents64+0xe4/0x260 fs/readdir.c:396 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f92b298e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f92b38b1038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007f92b2bb5fa0 RCX: 00007f92b298e969 RDX: 0000000000000099 RSI: 0000200000000400 RDI: 0000000000000005 RBP: 00007f92b2a10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f92b2bb5fa0 R15: 00007ffe55197c78 Allocated by task 5931: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4204 mt_alloc_one lib/maple_tree.c:176 [inline] mas_alloc_nodes+0x2e9/0x8e0 lib/maple_tree.c:1249 mas_node_count_gfp lib/maple_tree.c:1331 [inline] mas_preallocate+0x3ad/0x6f0 lib/maple_tree.c:5533 vma_iter_prealloc mm/vma.h:463 [inline] __split_vma+0x2fa/0xa00 mm/vma.c:525 vms_gather_munmap_vmas+0x2de/0x12b0 mm/vma.c:1354 __mmap_prepare mm/vma.c:2351 [inline] __mmap_region mm/vma.c:2607 [inline] mmap_region+0x678/0x1f30 mm/vma.c:2692 do_mmap+0xc45/0x10d0 mm/mmap.c:561 vm_mmap_pgoff+0x31b/0x4c0 mm/util.c:579 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:607 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 15: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4745 rcu_do_batch kernel/rcu/tree.c:2576 [inline] rcu_core+0xca8/0x1710 kernel/rcu/tree.c:2832 handle_softirqs+0x286/0x870 kernel/softirq.c:579 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968 smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:164 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Last potentially related work creation: kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548 __call_rcu_common kernel/rcu/tree.c:3094 [inline] call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3214 mas_wr_node_store lib/maple_tree.c:3887 [inline] mas_wr_store_entry+0x1f1b/0x25b0 lib/maple_tree.c:4098 mas_store_prealloc+0xb00/0xf60 lib/maple_tree.c:5506 vma_iter_store_new mm/vma.h:509 [inline] vma_complete+0x224/0xae0 mm/vma.c:351 __split_vma+0x8a6/0xa00 mm/vma.c:565 vms_gather_munmap_vmas+0x4ab/0x12b0 mm/vma.c:1375 __mmap_prepare mm/vma.c:2351 [inline] __mmap_region mm/vma.c:2607 [inline] mmap_region+0x678/0x1f30 mm/vma.c:2692 do_mmap+0xc45/0x10d0 mm/mmap.c:561 vm_mmap_pgoff+0x31b/0x4c0 mm/util.c:579 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:607 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888059cc1000 which belongs to the cache maple_node of size 256 The buggy address is located 192 bytes inside of freed 256-byte region [ffff888059cc1000, ffff888059cc1100) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x59cc1 anon flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000000 ffff88801a4c0000 ffffea0000fc0640 0000000000000009 raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP), pid 5899, tgid 5899 (rm), ts 149697554412, free_ts 148619769920 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0x8a/0x3b0 mm/slub.c:2619 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3859 __kmem_cache_alloc_bulk mm/slub.c:5294 [inline] kmem_cache_alloc_bulk_noprof+0x20e/0x790 mm/slub.c:5366 mt_alloc_bulk lib/maple_tree.c:181 [inline] mas_alloc_nodes+0x447/0x8e0 lib/maple_tree.c:1271 mas_node_count_gfp lib/maple_tree.c:1331 [inline] mas_node_count lib/maple_tree.c:1345 [inline] mas_wr_preallocate lib/maple_tree.c:4286 [inline] mas_store_gfp+0x46c/0x860 lib/maple_tree.c:5463 vma_iter_store_gfp mm/vma.h:217 [inline] do_brk_flags+0x760/0xbd0 mm/vma.c:2762 __do_sys_brk mm/mmap.c:197 [inline] __se_sys_brk+0x9bb/0xb90 mm/mmap.c:115 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5872 tgid 5872 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706 discard_slab mm/slub.c:2717 [inline] __put_partials+0x161/0x1c0 mm/slub.c:3186 put_cpu_partial+0x17c/0x250 mm/slub.c:3261 __slab_free+0x2f7/0x400 mm/slub.c:4513 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4204 getname_flags+0xb8/0x540 fs/namei.c:146 getname include/linux/fs.h:2907 [inline] getname_maybe_null include/linux/fs.h:2914 [inline] vfs_fstatat+0x43/0x170 fs/stat.c:370 __do_sys_newfstatat fs/stat.c:542 [inline] __se_sys_newfstatat fs/stat.c:536 [inline] __x64_sys_newfstatat+0x116/0x190 fs/stat.c:536 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888059cc0f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888059cc1000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888059cc1080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888059cc1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888059cc1180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================