syzkaller login: [ 26.645608] BUG: Bad rss-counter state mm:000000003ecfac35 type:MM_FILEPAGES val:33 [ 26.646854] BUG: Bad rss-counter state mm:000000003ecfac35 type:MM_ANONPAGES val:22 [ 26.792852] ================================================================== [ 26.793798] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 26.794779] Read of size 8 at addr ffff88800e54ad08 by task sshd/218 [ 26.795566] [ 26.795785] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 26.796781] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.797791] Call Trace: [ 26.798148] [ 26.798442] dump_stack_lvl+0x91/0xf0 [ 26.798951] print_report+0xcc/0x620 [ 26.799448] ? __virt_addr_valid+0x102/0x340 [ 26.800008] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.800647] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.801280] kasan_report+0xbe/0xf0 [ 26.801766] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.802414] vma_interval_tree_remove+0xc75/0xec0 [ 26.803031] vma_prepare+0xc54/0x11a0 [ 26.803520] __split_vma+0x5af/0x950 [ 26.803991] ? __pfx___split_vma+0x10/0x10 [ 26.804531] ? find_held_lock+0x2c/0x110 [ 26.805057] do_vmi_align_munmap+0x2ba/0x11f0 [ 26.805634] ? lock_is_held_type+0x9f/0x120 [ 26.806189] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.806819] ? mtree_range_walk+0x632/0x900 [ 26.807377] ? mas_walk+0x5c7/0x7c0 [ 26.807864] do_vmi_munmap+0x1f1/0x2b0 [ 26.808361] mmap_region+0x1f9/0x2660 [ 26.808869] ? vm_mmap_pgoff+0x15c/0x3a0 [ 26.809393] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.810126] ? __pfx_lock_acquire+0x10/0x10 [ 26.810673] ? __pfx_mmap_region+0x10/0x10 [ 26.811212] ? security_mmap_addr+0x7d/0xa0 [ 26.811756] ? get_unmapped_area+0x1f5/0x3f0 [ 26.812307] do_mmap+0x854/0xf00 [ 26.812757] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.813269] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.813847] ksys_mmap_pgoff+0x3af/0x500 [ 26.814384] do_syscall_64+0x3f/0x90 [ 26.814872] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.815528] RIP: 0033:0x7f08b9e1fd82 [ 26.815990] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 26.818122] RSP: 002b:00007ffc74797488 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.819038] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f08b9e1fd82 [ 26.819899] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f08b9259000 [ 26.820767] RBP: 00007f08b9259000 R08: 0000000000000009 R09: 0000000000001000 [ 26.821623] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558138120ec0 [ 26.822493] R13: 00007ffc747974a0 R14: 00007ffc747974d0 R15: 00007ffc74797830 [ 26.823350] [ 26.823642] [ 26.823861] Allocated by task 211: [ 26.824294] kasan_save_stack+0x22/0x50 [ 26.824799] kasan_set_track+0x25/0x30 [ 26.825297] __kasan_slab_alloc+0x59/0x70 [ 26.825824] kmem_cache_alloc+0x16b/0x370 [ 26.826348] vm_area_dup+0x20/0x160 [ 26.826804] __split_vma+0x170/0x950 [ 26.827274] split_vma+0xc6/0x110 [ 26.827716] mprotect_fixup+0x8d2/0xb30 [ 26.828223] do_mprotect_pkey+0x87e/0xd40 [ 26.828757] __x64_sys_mprotect+0x78/0xc0 [ 26.829277] do_syscall_64+0x3f/0x90 [ 26.829751] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.830426] [ 26.830651] Freed by task 211: [ 26.831045] kasan_save_stack+0x22/0x50 [ 26.831549] kasan_set_track+0x25/0x30 [ 26.832047] kasan_save_free_info+0x2b/0x50 [ 26.832587] __kasan_slab_free+0x10a/0x190 [ 26.833131] kmem_cache_free+0x10d/0x4d0 [ 26.833642] rcu_core+0x8c8/0x2860 [ 26.834099] __do_softirq+0x1b7/0x7d4 [ 26.834586] [ 26.834804] Last potentially related work creation: [ 26.835404] kasan_save_stack+0x22/0x50 [ 26.835908] __kasan_record_aux_stack+0x8e/0xa0 [ 26.836482] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.837131] remove_vma+0x139/0x170 [ 26.837588] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.838159] do_vmi_munmap+0x1f1/0x2b0 [ 26.838649] __vm_munmap+0x138/0x3a0 [ 26.839123] __x64_sys_munmap+0x59/0x80 [ 26.839620] do_syscall_64+0x3f/0x90 [ 26.840092] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.840744] [ 26.840968] Second to last potentially related work creation: [ 26.841654] kasan_save_stack+0x22/0x50 [ 26.842178] __kasan_record_aux_stack+0x8e/0xa0 [ 26.842758] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.843403] remove_vma+0x139/0x170 [ 26.843860] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.844417] do_vmi_munmap+0x1f1/0x2b0 [ 26.844905] mmap_region+0x1f9/0x2660 [ 26.845388] do_mmap+0x854/0xf00 [ 26.845823] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.846328] ksys_mmap_pgoff+0x3af/0x500 [ 26.846836] do_syscall_64+0x3f/0x90 [ 26.847318] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.847967] [ 26.848182] The buggy address belongs to the object at ffff88800e54acb0 [ 26.848182] which belongs to the cache vm_area_struct of size 168 [ 26.849656] The buggy address is located 88 bytes inside of [ 26.849656] freed 168-byte region [ffff88800e54acb0, ffff88800e54ad58) [ 26.851095] [ 26.851316] The buggy address belongs to the physical page: [ 26.851976] page:00000000da8725c4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe54a [ 26.853068] memcg:ffff88800e06a201 [ 26.853505] flags: 0x100000000000200(slab|node=0|zone=1) [ 26.854164] page_type: 0xffffffff() [ 26.854621] raw: 0100000000000200 ffff88800879fc80 ffffea00005f7c40 dead000000000004 [ 26.855554] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e06a201 [ 26.856476] page dumped because: kasan: bad access detected [ 26.857148] [ 26.857368] Memory state around the buggy address: [ 26.857956] ffff88800e54ac00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 26.858851] ffff88800e54ac80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 26.859728] >ffff88800e54ad00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 26.860593] ^ [ 26.861044] ffff88800e54ad80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 26.861910] ffff88800e54ae00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 26.862771] ================================================================== [ 26.863821] Disabling lock debugging due to kernel taint [ 28.723672] BUG: Bad rss-counter state mm:00000000f88c06c7 type:MM_FILEPAGES val:33 [ 28.724935] BUG: Bad rss-counter state mm:00000000f88c06c7 type:MM_ANONPAGES val:22 [ 29.144098] BUG: Bad rss-counter state mm:00000000702527db type:MM_FILEPAGES val:33 [ 29.145518] BUG: Bad rss-counter state mm:00000000702527db type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:38116' (ECDSA) to the list of known hosts. 2023/06/20 07:40:01 fuzzer started 2023/06/20 07:40:01 dialing manager at localhost:44161 2023/06/20 07:40:01 checking machine... 2023/06/20 07:40:01 checking revisions... [ 29.872393] kmemleak: Automatic memory scanning thread ended 2023/06/20 07:40:02 testing simple program... [ 29.919776] cgroup: Unknown subsys name 'net' [ 29.965028] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:39:58 Registers: info registers vcpu 0 RAX=1ffff11001998a2c RBX=dffffc0000000000 RCX=0000000000000000 RDX=ffff8880181b8000 RSI=ffffffff817167c0 RDI=ffff88800ccc5160 RBP=00007f94f8b833ec RSP=ffff88800ea17de8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=ffff88800ccc50e8 R13=00007f94f8b833ec R14=0000000000000040 R15=ffff888016b3ca00 RIP=ffffffff817167d0 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f94f8012900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f94f8b833ec CR3=000000000fbe0000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=6720646572637465733a4d41503d706f XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f3b1127fd20 CR3=000000000dba6000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=2031303a30343a3730203032206e754a XMM01=73732878696e755f6d6170203a5d3732 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3732325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031303a30343a3730203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000