loop0: detected capacity change from 0 to 32768 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. (syz.0.0,5322,0):ocfs2_check_set_options:1244 ERROR: Invalid heartbeat mount options loop0: detected capacity change from 32768 to 0 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 0 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 1 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 2 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 3 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 4 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 5 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 6 (syz.0.0,5322,0):ocfs2_get_clusters:627 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_extent_map_get_blocks:681 ERROR: status = -5 (syz.0.0,5322,0):ocfs2_get_block:153 ERROR: get_blocks() failed, inode: 0xffff888043344fb8, block: 7 ================================================================== BUG: KASAN: slab-use-after-free in ocfs2_fault+0xd3/0x3f0 fs/ocfs2/mmap.c:41 Read of size 8 at addr ffff88801c1ca2d8 by task syz.0.0/5322 CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted syzkaller #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:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 ocfs2_fault+0xd3/0x3f0 fs/ocfs2/mmap.c:41 __do_fault+0x138/0x390 mm/memory.c:5281 do_read_fault mm/memory.c:5716 [inline] do_fault mm/memory.c:5850 [inline] do_pte_missing mm/memory.c:4362 [inline] handle_pte_fault mm/memory.c:6195 [inline] __handle_mm_fault+0x35e3/0x5400 mm/memory.c:6336 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6505 do_user_addr_fault+0x764/0x1380 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0010:move_addr_to_user+0x49/0x1f0 net/socket.c:288 Code: 00 44 89 fe e8 b8 b5 a1 f8 41 81 ff 81 00 00 00 0f 83 6f 01 00 00 48 b8 00 f0 ff ff ff 7f 00 00 49 39 c4 4c 0f 47 e0 0f 01 cb <41> 8b 2c 24 41 39 ef 41 0f 4c ef bf ff ff ff ff 89 ee e8 80 b5 a1 RSP: 0018:ffffc9000d4a7d48 EFLAGS: 00050283 RAX: 00007ffffffff000 RBX: 0000000000000000 RCX: 0000000000000002 RDX: ffff888000bbc900 RSI: 0000000000000010 RDI: 0000000000000080 RBP: ffffc9000d4a7ea8 R08: ffffffff8f7d0f77 R09: 1ffffffff1efa1ee R10: dffffc0000000000 R11: fffffbfff1efa1ef R12: 0000200000001540 R13: 0000000000000010 R14: ffffc9000d4a7dc0 R15: 0000000000000010 __sys_getsockname+0x1c3/0x270 net/socket.c:2158 __do_sys_getsockname net/socket.c:2164 [inline] __se_sys_getsockname net/socket.c:2161 [inline] __x64_sys_getsockname+0x7b/0x90 net/socket.c:2161 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f988858f749 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:00007f9889438038 EFLAGS: 00000246 ORIG_RAX: 0000000000000033 RAX: ffffffffffffffda RBX: 00007f98887e5fa0 RCX: 00007f988858f749 RDX: 0000200000001540 RSI: 0000000000000000 RDI: 000000000000000a RBP: 00007f9888613f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f98887e6038 R14: 00007f98887e5fa0 R15: 00007ffea3d73468 Allocated by task 5322: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4978 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_noprof+0x367/0x6e0 mm/slub.c:5295 vm_area_alloc+0x24/0x140 mm/vma_init.c:32 __mmap_new_vma mm/vma.c:2461 [inline] __mmap_region mm/vma.c:2670 [inline] mmap_region+0xdcd/0x2110 mm/vma.c:2740 do_mmap+0xc45/0x10d0 mm/mmap.c:558 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:581 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5322: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587 kasan_save_free_info mm/kasan/kasan.h:406 [inline] poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2543 [inline] slab_free_after_rcu_debug+0x12c/0x2a0 mm/slub.c:6700 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Last potentially related work creation: kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559 slab_free_hook mm/slub.c:2504 [inline] slab_free mm/slub.c:6642 [inline] kmem_cache_free+0x4a2/0x690 mm/slub.c:6752 remove_vma mm/vma.c:468 [inline] vms_complete_munmap_vmas+0x626/0x8a0 mm/vma.c:1293 __mmap_complete mm/vma.c:2532 [inline] __mmap_region mm/vma.c:2678 [inline] mmap_region+0x11e1/0x2110 mm/vma.c:2740 do_mmap+0xc45/0x10d0 mm/mmap.c:558 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:581 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88801c1ca280 which belongs to the cache vm_area_struct of size 256 The buggy address is located 88 bytes inside of freed 256-byte region [ffff88801c1ca280, ffff88801c1ca380) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c1ca memcg:ffff888000875e81 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff88801b2d2b40 dead000000000100 dead000000000122 raw: 0000000000000000 00000000000c000c 00000000f5000000 ffff888000875e81 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 4695, tgid 4695 (ln), ts 27143850492, free_ts 27143262202 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x234/0x290 mm/page_alloc.c:1845 prep_new_page mm/page_alloc.c:1853 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3879 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5178 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 alloc_slab_page mm/slub.c:3059 [inline] allocate_slab+0x96/0x350 mm/slub.c:3232 new_slab mm/slub.c:3286 [inline] ___slab_alloc+0xf56/0x1990 mm/slub.c:4655 __kmem_cache_alloc_bulk+0x1e2/0x590 mm/slub.c:7406 refill_sheaf mm/slub.c:2637 [inline] __pcs_replace_empty_main+0x292/0x540 mm/slub.c:5048 alloc_from_pcs mm/slub.c:5146 [inline] slab_alloc_node mm/slub.c:5273 [inline] kmem_cache_alloc_noprof+0x453/0x6e0 mm/slub.c:5295 vm_area_dup+0x2b/0x680 mm/vma_init.c:123 __split_vma+0x1a9/0xa00 mm/vma.c:515 vms_gather_munmap_vmas+0x4c6/0x12e0 mm/vma.c:1380 __mmap_prepare mm/vma.c:2359 [inline] __mmap_region mm/vma.c:2652 [inline] mmap_region+0x722/0x2110 mm/vma.c:2740 do_mmap+0xc45/0x10d0 mm/mmap.c:558 vm_mmap_pgoff+0x2a6/0x4d0 mm/util.c:581 ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:604 page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2901 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff88801c1ca180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801c1ca200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff88801c1ca280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801c1ca300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801c1ca380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: 00 44 89 fe add %al,-0x2(%rcx,%rcx,4) 4: e8 b8 b5 a1 f8 call 0xf8a1b5c1 9: 41 81 ff 81 00 00 00 cmp $0x81,%r15d 10: 0f 83 6f 01 00 00 jae 0x185 16: 48 b8 00 f0 ff ff ff movabs $0x7ffffffff000,%rax 1d: 7f 00 00 20: 49 39 c4 cmp %rax,%r12 23: 4c 0f 47 e0 cmova %rax,%r12 27: 0f 01 cb stac * 2a: 41 8b 2c 24 mov (%r12),%ebp <-- trapping instruction 2e: 41 39 ef cmp %ebp,%r15d 31: 41 0f 4c ef cmovl %r15d,%ebp 35: bf ff ff ff ff mov $0xffffffff,%edi 3a: 89 ee mov %ebp,%esi 3c: e8 .byte 0xe8 3d: 80 .byte 0x80 3e: b5 a1 mov $0xa1,%ch