program: syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000040)='./file1\x00', 0x8c0, &(0x7f0000000080)=ANY=[@ANYBLOB='acl,heartbeat=none,dir_resv_level=00003,coherency=full,coherency=full,localflocks,coherency=full,noacl,\x00'/119], 0x1, 0x4421, &(0x7f0000004500)="$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r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x42, 0x0) truncate(&(0x7f0000000040)='./file1\x00', 0x1001bfc) (async) truncate(&(0x7f0000000040)='./file1\x00', 0x1001bfc) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r0, 0x4000) (async) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r0, 0x4000) openat$kvm(0xffffffffffffff9c, &(0x7f0000000140), 0x0, 0x0) (async) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140), 0x0, 0x0) r2 = syz_open_dev$loop(&(0x7f0000000040), 0x0, 0x0) r3 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000080)='/proc/timer_list\x00', 0x0, 0x0) ioctl$LOOP_CHANGE_FD(r2, 0x4c06, r3) r4 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r5, &(0x7f0000000000/0x18000)=nil, &(0x7f0000001800)=[@text64={0x40, 0x0}], 0x1, 0x0, 0x0, 0x0) [ 85.487251][ T45] Bluetooth: hci0: command tx timeout qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xca000) [ 86.019088][ T5324] loop0: detected capacity change from 0 to 32768 [ 86.029932][ T5324] ======================================================= [ 86.029932][ T5324] WARNING: The mand mount option has been deprecated and [ 86.029932][ T5324] and is ignored by this kernel. Remove the mand [ 86.029932][ T5324] option from the mount to silence this warning. [ 86.029932][ T5324] ======================================================= [ 86.116656][ T5324] JBD2: Ignoring recovery information on journal [ 86.199951][ T5324] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 86.307390][ T5324] ================================================================== [ 86.311370][ T5324] BUG: KASAN: slab-use-after-free in ocfs2_fault+0xdb/0x440 [ 86.315105][ T5324] Read of size 8 at addr ffff88801ef60418 by task syz.0.0/5324 [ 86.319633][ T5324] [ 86.321021][ T5324] CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 86.321036][ T5324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 86.321042][ T5324] Call Trace: [ 86.321051][ T5324] [ 86.321059][ T5324] dump_stack_lvl+0xe8/0x150 [ 86.321125][ T5324] print_report+0xba/0x230 [ 86.321140][ T5324] ? ocfs2_fault+0xdb/0x440 [ 86.321155][ T5324] kasan_report+0x117/0x150 [ 86.321204][ T5324] ? ocfs2_fault+0xdb/0x440 [ 86.321220][ T5324] ocfs2_fault+0xdb/0x440 [ 86.321230][ T5324] ? kmem_cache_alloc_noprof+0x307/0x650 [ 86.321279][ T5324] ? ptlock_alloc+0x20/0x70 [ 86.321295][ T5324] ? __pfx_ocfs2_fault+0x10/0x10 [ 86.321308][ T5324] ? __raw_spin_lock_init+0x45/0x100 [ 86.321347][ T5324] ? pte_alloc_one+0x1f9/0x370 [ 86.321388][ T5324] __do_fault+0x138/0x390 [ 86.321403][ T5324] do_pte_missing+0x228f/0x3750 [ 86.321421][ T5324] handle_mm_fault+0x1bec/0x3310 [ 86.321439][ T5324] ? handle_mm_fault+0xee/0x3310 [ 86.321451][ T5324] ? __pfx_handle_mm_fault+0x10/0x10 [ 86.321468][ T5324] ? lock_mm_and_find_vma+0xa7/0x340 [ 86.321507][ T5324] do_user_addr_fault+0x75b/0x1340 [ 86.321524][ T5324] exc_page_fault+0x6a/0xc0 [ 86.321597][ T5324] asm_exc_page_fault+0x26/0x30 [ 86.321610][ T5324] RIP: 0010:strncpy_from_user+0xb7/0x2b0 [ 86.321658][ T5324] Code: 00 00 4c 89 f6 e8 39 b9 d9 fc 49 83 fe 07 0f 86 9d 00 00 00 48 89 1c 24 4c 89 74 24 08 48 c7 c5 f8 ff ff ff 45 31 ff 4c 89 e3 <4f> 8b 34 3c 48 b8 ff fe fe fe fe fe fe fe 4d 8d 24 06 4d 89 f5 49 [ 86.321669][ T5324] RSP: 0018:ffffc9000e297d98 EFLAGS: 00050246 [ 86.321681][ T5324] RAX: ffffffff84ebf4b7 RBX: 0000200000000040 RCX: ffff88801cd70000 [ 86.321688][ T5324] RDX: 0000000000000000 RSI: 00000000000000a8 RDI: 0000000000000007 [ 86.321694][ T5324] RBP: fffffffffffffff8 R08: ffff8880443c51bf R09: 1ffff11008878a37 [ 86.321701][ T5324] R10: dffffc0000000000 R11: ffffed1008878a38 R12: 0000200000000040 [ 86.321707][ T5324] R13: 0000200000000040 R14: 00000000000000a8 R15: 0000000000000000 [ 86.321715][ T5324] ? strncpy_from_user+0x97/0x2b0 [ 86.321727][ T5324] ? strncpy_from_user+0x97/0x2b0 [ 86.321737][ T5324] do_getname+0x77/0x250 [ 86.321775][ T5324] do_sys_truncate+0xa0/0x1c0 [ 86.321787][ T5324] ? __pfx_do_sys_truncate+0x10/0x10 [ 86.321798][ T5324] __x64_sys_truncate+0x5b/0x70 [ 86.321808][ T5324] do_syscall_64+0x14d/0xf80 [ 86.321857][ T5324] ? trace_irq_disable+0x3b/0x150 [ 86.321906][ T5324] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.321915][ T5324] ? clear_bhb_loop+0x40/0x90 [ 86.321927][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.321938][ T5324] RIP: 0033:0x7f7168b9c799 [ 86.321951][ T5324] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 86.321959][ T5324] RSP: 002b:00007f7169adcfe8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 86.321970][ T5324] RAX: ffffffffffffffda RBX: 00007f7168e15fa0 RCX: 00007f7168b9c799 [ 86.321977][ T5324] RDX: 0000000000000000 RSI: 0000000001001bfc RDI: 0000200000000040 [ 86.321984][ T5324] RBP: 00007f7168c32bd9 R08: 0000000000000000 R09: 0000000000000000 [ 86.321990][ T5324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.321996][ T5324] R13: 00007f7168e16038 R14: 00007f7168e15fa0 R15: 00007ffd17c6e688 [ 86.322003][ T5324] [ 86.322006][ T5324] [ 86.493927][ T5324] Allocated by task 5331: [ 86.495925][ T5324] kasan_save_track+0x3e/0x80 [ 86.498136][ T5324] __kasan_slab_alloc+0x6c/0x80 [ 86.500874][ T5324] kmem_cache_alloc_noprof+0x2bc/0x650 [ 86.504036][ T5324] vm_area_alloc+0x24/0x140 [ 86.506491][ T5324] mmap_region+0x10eb/0x2240 [ 86.508639][ T5324] do_mmap+0xc39/0x10c0 [ 86.510530][ T5324] vm_mmap_pgoff+0x2c9/0x4f0 [ 86.512673][ T5324] ksys_mmap_pgoff+0x51e/0x760 [ 86.514630][ T5324] do_syscall_64+0x14d/0xf80 [ 86.516849][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.519736][ T5324] [ 86.520945][ T5324] Freed by task 5295: [ 86.523005][ T5324] kasan_save_track+0x3e/0x80 [ 86.525517][ T5324] kasan_save_free_info+0x46/0x50 [ 86.528102][ T5324] __kasan_slab_free+0x5c/0x80 [ 86.530485][ T5324] slab_free_after_rcu_debug+0x126/0x220 [ 86.533256][ T5324] rcu_core+0x7cd/0x1070 [ 86.535219][ T5324] handle_softirqs+0x22a/0x870 [ 86.537524][ T5324] __irq_exit_rcu+0x5f/0x150 [ 86.539947][ T5324] irq_exit_rcu+0x9/0x30 [ 86.542567][ T5324] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 86.545385][ T5324] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 86.548147][ T5324] [ 86.549543][ T5324] Last potentially related work creation: [ 86.552265][ T5324] kasan_save_stack+0x3e/0x60 [ 86.554376][ T5324] kasan_record_aux_stack+0xbd/0xd0 [ 86.556725][ T5324] kmem_cache_free+0x426/0x630 [ 86.558863][ T5324] vms_complete_munmap_vmas+0x929/0xc60 [ 86.561659][ T5324] __mmap_complete+0x7b/0x5e0 [ 86.565137][ T5324] mmap_region+0x15a2/0x2240 [ 86.568001][ T5324] do_mmap+0xc39/0x10c0 [ 86.570229][ T5324] vm_mmap_pgoff+0x2c9/0x4f0 [ 86.572572][ T5324] ksys_mmap_pgoff+0x51e/0x760 [ 86.574847][ T5324] do_syscall_64+0x14d/0xf80 [ 86.577101][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.580475][ T5324] [ 86.581753][ T5324] The buggy address belongs to the object at ffff88801ef603c0 [ 86.581753][ T5324] which belongs to the cache vm_area_struct of size 256 [ 86.589130][ T5324] The buggy address is located 88 bytes inside of [ 86.589130][ T5324] freed 256-byte region [ffff88801ef603c0, ffff88801ef604c0) [ 86.596979][ T5324] [ 86.598432][ T5324] The buggy address belongs to the physical page: [ 86.602292][ T5324] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ef60 [ 86.606469][ T5324] memcg:ffff888011a1a481 [ 86.609036][ T5324] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 86.612118][ T5324] page_type: f5(slab) [ 86.613860][ T5324] raw: 00fff00000000000 ffff88801c2a8b40 dead000000000100 dead000000000122 [ 86.618068][ T5324] raw: 0000000000000000 00000008000c000c 00000000f5000000 ffff888011a1a481 [ 86.622645][ T5324] page dumped because: kasan: bad access detected [ 86.625522][ T5324] page_owner tracks the page as allocated [ 86.628122][ T5324] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5010, tgid 5010 (dhcpcd), ts 55677052352, free_ts 41041835592 [ 86.638426][ T5324] post_alloc_hook+0x231/0x280 [ 86.640641][ T5324] get_page_from_freelist+0x24dc/0x2580 [ 86.643017][ T5324] __alloc_frozen_pages_noprof+0x18d/0x380 [ 86.645668][ T5324] allocate_slab+0x77/0x660 [ 86.647813][ T5324] refill_objects+0x331/0x3c0 [ 86.650582][ T5324] __pcs_replace_empty_main+0x2f9/0x5e0 [ 86.653867][ T5324] kmem_cache_alloc_noprof+0x37d/0x650 [ 86.656533][ T5324] vm_area_dup+0x2b/0x680 [ 86.658553][ T5324] dup_mmap+0x8b1/0x1d90 [ 86.660843][ T5324] copy_mm+0x13b/0x4b0 [ 86.662872][ T5324] copy_process+0x18b6/0x3cf0 [ 86.665277][ T5324] kernel_clone+0x248/0x8e0 [ 86.668045][ T5324] __x64_sys_clone+0x1b6/0x230 [ 86.671019][ T5324] do_syscall_64+0x14d/0xf80 [ 86.672955][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.675481][ T5324] page last free pid 4795 tgid 4795 stack trace: [ 86.678283][ T5324] __free_frozen_pages+0xc2b/0xdb0 [ 86.680964][ T5324] __slab_free+0x263/0x2b0 [ 86.683002][ T5324] qlist_free_all+0x97/0x100 [ 86.685067][ T5324] kasan_quarantine_reduce+0x148/0x160 [ 86.687873][ T5324] __kasan_slab_alloc+0x22/0x80 [ 86.691058][ T5324] __kmalloc_noprof+0x316/0x760 [ 86.693540][ T5324] tomoyo_realpath_from_path+0xe3/0x5d0 [ 86.695809][ T5324] tomoyo_path_perm+0x283/0x560 [ 86.697911][ T5324] security_inode_getattr+0x12b/0x310 [ 86.700191][ T5324] __x64_sys_newfstat+0x13b/0x270 [ 86.702701][ T5324] do_syscall_64+0x14d/0xf80 [ 86.705192][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.708232][ T5324] [ 86.709370][ T5324] Memory state around the buggy address: [ 86.712187][ T5324] ffff88801ef60300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 86.716949][ T5324] ffff88801ef60380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 86.720953][ T5324] >ffff88801ef60400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 86.724833][ T5324] ^ [ 86.727067][ T5324] ffff88801ef60480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 86.730401][ T5324] ffff88801ef60500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 86.735848][ T5324] ================================================================== [ 87.040210][ T5324] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 87.044144][ T5324] CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.048390][ T5324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 87.053016][ T5324] Call Trace: [ 87.054529][ T5324] [ 87.055856][ T5324] vpanic+0x56c/0xa60 [ 87.057902][ T5324] ? __pfx_vpanic+0x10/0x10 [ 87.059939][ T5324] panic+0xc5/0xd0 [ 87.061559][ T5324] ? __pfx_panic+0x10/0x10 [ 87.064167][ T5324] ? preempt_schedule_thunk+0x16/0x30 [ 87.067084][ T5324] ? ocfs2_fault+0xdb/0x440 [ 87.069433][ T5324] ? preempt_schedule_thunk+0x16/0x30 [ 87.071800][ T5324] ? ocfs2_fault+0xdb/0x440 [ 87.073998][ T5324] check_panic_on_warn+0x89/0xb0 [ 87.076401][ T5324] ? ocfs2_fault+0xdb/0x440 [ 87.078975][ T5324] end_report+0x73/0x180 [ 87.081422][ T5324] ? ocfs2_fault+0xdb/0x440 [ 87.084191][ T5324] kasan_report+0x128/0x150 [ 87.086214][ T5324] ? ocfs2_fault+0xdb/0x440 [ 87.088389][ T5324] ocfs2_fault+0xdb/0x440 [ 87.090460][ T5324] ? kmem_cache_alloc_noprof+0x307/0x650 [ 87.093118][ T5324] ? ptlock_alloc+0x20/0x70 [ 87.095390][ T5324] ? __pfx_ocfs2_fault+0x10/0x10 [ 87.097784][ T5324] ? __raw_spin_lock_init+0x45/0x100 [ 87.100505][ T5324] ? pte_alloc_one+0x1f9/0x370 [ 87.102986][ T5324] __do_fault+0x138/0x390 [ 87.105093][ T5324] do_pte_missing+0x228f/0x3750 [ 87.108120][ T5324] handle_mm_fault+0x1bec/0x3310 [ 87.111108][ T5324] ? handle_mm_fault+0xee/0x3310 [ 87.113556][ T5324] ? __pfx_handle_mm_fault+0x10/0x10 [ 87.116032][ T5324] ? lock_mm_and_find_vma+0xa7/0x340 [ 87.118477][ T5324] do_user_addr_fault+0x75b/0x1340 [ 87.121184][ T5324] exc_page_fault+0x6a/0xc0 [ 87.123883][ T5324] asm_exc_page_fault+0x26/0x30 [ 87.126218][ T5324] RIP: 0010:strncpy_from_user+0xb7/0x2b0 [ 87.130703][ T5324] Code: 00 00 4c 89 f6 e8 39 b9 d9 fc 49 83 fe 07 0f 86 9d 00 00 00 48 89 1c 24 4c 89 74 24 08 48 c7 c5 f8 ff ff ff 45 31 ff 4c 89 e3 <4f> 8b 34 3c 48 b8 ff fe fe fe fe fe fe fe 4d 8d 24 06 4d 89 f5 49 [ 87.140017][ T5324] RSP: 0018:ffffc9000e297d98 EFLAGS: 00050246 [ 87.143293][ T5324] RAX: ffffffff84ebf4b7 RBX: 0000200000000040 RCX: ffff88801cd70000 [ 87.146842][ T5324] RDX: 0000000000000000 RSI: 00000000000000a8 RDI: 0000000000000007 [ 87.150449][ T5324] RBP: fffffffffffffff8 R08: ffff8880443c51bf R09: 1ffff11008878a37 [ 87.155184][ T5324] R10: dffffc0000000000 R11: ffffed1008878a38 R12: 0000200000000040 [ 87.159956][ T5324] R13: 0000200000000040 R14: 00000000000000a8 R15: 0000000000000000 [ 87.163589][ T5324] ? strncpy_from_user+0x97/0x2b0 [ 87.166050][ T5324] ? strncpy_from_user+0x97/0x2b0 [ 87.168433][ T5324] do_getname+0x77/0x250 [ 87.170445][ T5324] do_sys_truncate+0xa0/0x1c0 [ 87.172874][ T5324] ? __pfx_do_sys_truncate+0x10/0x10 [ 87.175530][ T5324] __x64_sys_truncate+0x5b/0x70 [ 87.177793][ T5324] do_syscall_64+0x14d/0xf80 [ 87.180431][ T5324] ? trace_irq_disable+0x3b/0x150 [ 87.183595][ T5324] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.186960][ T5324] ? clear_bhb_loop+0x40/0x90 [ 87.189227][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.192117][ T5324] RIP: 0033:0x7f7168b9c799 [ 87.194291][ T5324] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 87.205139][ T5324] RSP: 002b:00007f7169adcfe8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 87.209015][ T5324] RAX: ffffffffffffffda RBX: 00007f7168e15fa0 RCX: 00007f7168b9c799 [ 87.212647][ T5324] RDX: 0000000000000000 RSI: 0000000001001bfc RDI: 0000200000000040 [ 87.216413][ T5324] RBP: 00007f7168c32bd9 R08: 0000000000000000 R09: 0000000000000000 [ 87.220137][ T5324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.225599][ T5324] R13: 00007f7168e16038 R14: 00007f7168e15fa0 R15: 00007ffd17c6e688 [ 87.229712][ T5324] [ 87.231436][ T5324] Kernel Offset: disabled [ 87.233489][ T5324] Rebooting in 86400 seconds..