================================================================== BUG: KASAN: slab-use-after-free in diWrite+0xde3/0x19b0 fs/jfs/jfs_imap.c:753 Write of size 32 at addr ffff88802fca00c0 by task syz-executor402/5877 CPU: 1 UID: 0 PID: 5877 Comm: syz-executor402 Not tainted 6.13.0-rc4-syzkaller-00004-gf07044dd0df0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106 diWrite+0xde3/0x19b0 fs/jfs/jfs_imap.c:753 txCommit+0xa1a/0x6b90 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices+0x8b3/0xbf0 fs/jfs/jfs_dtree.c:2663 jfs_readdir+0x1fc5/0x3c50 fs/jfs/jfs_dtree.c:3019 wrap_directory_iterator+0x91/0xd0 fs/readdir.c:65 iterate_dir+0x571/0x800 fs/readdir.c:108 __do_sys_getdents64 fs/readdir.c:403 [inline] __se_sys_getdents64+0x1e2/0x4b0 fs/readdir.c:389 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ec4a80a79 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 1f 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe71028268 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8ec4a80a79 RDX: 000000000000009e RSI: 0000000020000280 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007ffe710283b0 R09: 00007ffe710283b0 R10: 00007ffe710283b0 R11: 0000000000000246 R12: 00000000000f4240 R13: 00007f8ec4acd503 R14: 00007ffe71028300 R15: 00007ffe710282f0 Allocated by task 5614: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 mt_alloc_one lib/maple_tree.c:176 [inline] mas_alloc_nodes+0x25b/0x7e0 lib/maple_tree.c:1253 mas_node_count_gfp lib/maple_tree.c:1335 [inline] mas_preallocate+0x575/0x8d0 lib/maple_tree.c:5545 vma_iter_prealloc mm/vma.h:349 [inline] __split_vma+0x302/0xc50 mm/vma.c:447 vms_gather_munmap_vmas+0x2e6/0x1600 mm/vma.c:1267 __mmap_prepare mm/vma.c:2241 [inline] __mmap_region+0x7c4/0x2d30 mm/vma.c:2443 mmap_region+0x1d0/0x2c0 mm/mmap.c:1348 do_mmap+0x8f0/0x1000 mm/mmap.c:496 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:580 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 0: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4613 [inline] kmem_cache_free+0x195/0x410 mm/slub.c:4715 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:544 __call_rcu_common kernel/rcu/tree.c:3086 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:3190 mas_wr_node_store lib/maple_tree.c:3878 [inline] mas_wr_store_entry+0x158f/0x2520 lib/maple_tree.c:4098 mas_store_prealloc+0xcbb/0x1390 lib/maple_tree.c:5519 __mmap_new_vma mm/vma.c:2371 [inline] __mmap_region+0x25b9/0x2d30 mm/vma.c:2456 mmap_region+0x1d0/0x2c0 mm/mmap.c:1348 do_mmap+0x8f0/0x1000 mm/mmap.c:496 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:580 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88802fca0000 which belongs to the cache maple_node of size 256 The buggy address is located 192 bytes inside of freed 256-byte region [ffff88802fca0000, ffff88802fca0100) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2fca0 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801ac91000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 00fff00000000040 ffff88801ac91000 dead000000000122 0000000000000000 head: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 00fff00000000001 ffffea0000bf2801 ffffffffffffffff 0000000000000000 head: ffff888000000002 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5614, tgid 5614 (dhcpcd-run-hook), ts 50794162099, free_ts 44417914238 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3476 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 alloc_slab_page+0x6a/0x110 mm/slub.c:2423 allocate_slab+0x5a/0x2b0 mm/slub.c:2589 new_slab mm/slub.c:2642 [inline] ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830 __slab_alloc+0x58/0xa0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] kmem_cache_alloc_noprof+0x268/0x380 mm/slub.c:4175 mt_alloc_one lib/maple_tree.c:176 [inline] mas_alloc_nodes+0x25b/0x7e0 lib/maple_tree.c:1253 mas_node_count_gfp lib/maple_tree.c:1335 [inline] mas_preallocate+0x575/0x8d0 lib/maple_tree.c:5545 vma_iter_prealloc mm/vma.h:349 [inline] __split_vma+0x302/0xc50 mm/vma.c:447 vms_gather_munmap_vmas+0x2e6/0x1600 mm/vma.c:1267 __mmap_prepare mm/vma.c:2241 [inline] __mmap_region+0x7c4/0x2d30 mm/vma.c:2443 mmap_region+0x1d0/0x2c0 mm/mmap.c:1348 do_mmap+0x8f0/0x1000 mm/mmap.c:496 page last free pid 5192 tgid 5192 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xd2c/0x1000 mm/page_alloc.c:2659 __slab_free+0x2c2/0x380 mm/slub.c:4524 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 getname_flags+0xb7/0x540 fs/namei.c:139 do_sys_openat2+0xd2/0x1d0 fs/open.c:1396 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1428 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff88802fc9ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802fca0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88802fca0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88802fca0100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88802fca0180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================