[ 32.716856] BUG: Bad rss-counter state mm:000000004793fc75 type:MM_FILEPAGES val:33 [ 32.718388] BUG: Bad rss-counter state mm:000000004793fc75 type:MM_ANONPAGES val:22 [ 32.897342] ================================================================== [ 32.898295] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.899288] Read of size 8 at addr ffff88800e4aced8 by task sshd/219 [ 32.900195] [ 32.900426] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.901352] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.902403] Call Trace: [ 32.902740] [ 32.903040] dump_stack_lvl+0x91/0xf0 [ 32.903563] print_report+0xcc/0x620 [ 32.904073] ? __virt_addr_valid+0x102/0x340 [ 32.904678] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.905334] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.905988] kasan_report+0xbe/0xf0 [ 32.906511] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.907189] vma_interval_tree_remove+0xc75/0xec0 [ 32.907851] vma_prepare+0xc54/0x11a0 [ 32.908378] __split_vma+0x5af/0x950 [ 32.908907] ? __pfx___split_vma+0x10/0x10 [ 32.909486] ? find_held_lock+0x2c/0x110 [ 32.910057] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.910671] ? lock_is_held_type+0x9f/0x120 [ 32.911264] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.911924] ? mtree_range_walk+0x632/0x900 [ 32.912530] ? mas_walk+0x5c7/0x7c0 [ 32.913060] do_vmi_munmap+0x1f1/0x2b0 [ 32.913599] mmap_region+0x1f9/0x2660 [ 32.914128] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.914689] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.915472] ? __pfx_lock_acquire+0x10/0x10 [ 32.916060] ? __pfx_mmap_region+0x10/0x10 [ 32.916655] ? security_mmap_addr+0x7d/0xa0 [ 32.917242] ? get_unmapped_area+0x1f5/0x3f0 [ 32.917847] do_mmap+0x854/0xf00 [ 32.918334] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.918875] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.919486] ksys_mmap_pgoff+0x3af/0x500 [ 32.920044] do_syscall_64+0x3f/0x90 [ 32.920569] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.921285] RIP: 0033:0x7fb5561b4d82 [ 32.921787] 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 [ 32.924121] RSP: 002b:00007ffdddd94878 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.925123] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb5561b4d82 [ 32.926051] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb5555ee000 [ 32.926990] RBP: 00007fb5555ee000 R08: 0000000000000009 R09: 0000000000001000 [ 32.927920] R10: 0000000000000812 R11: 0000000000000206 R12: 000056125f9e5ec0 [ 32.928869] R13: 00007ffdddd94890 R14: 00007ffdddd948c0 R15: 00007ffdddd94c20 [ 32.929812] [ 32.930134] [ 32.930366] Allocated by task 212: [ 32.930834] kasan_save_stack+0x22/0x50 [ 32.931385] kasan_set_track+0x25/0x30 [ 32.931929] __kasan_slab_alloc+0x59/0x70 [ 32.932500] kmem_cache_alloc+0x16b/0x370 [ 32.933077] vm_area_dup+0x20/0x160 [ 32.933572] __split_vma+0x170/0x950 [ 32.934084] split_vma+0xc6/0x110 [ 32.934566] mprotect_fixup+0x8d2/0xb30 [ 32.935113] do_mprotect_pkey+0x87e/0xd40 [ 32.935681] __x64_sys_mprotect+0x78/0xc0 [ 32.936255] do_syscall_64+0x3f/0x90 [ 32.936788] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.937489] [ 32.937724] Freed by task 19: [ 32.938145] kasan_save_stack+0x22/0x50 [ 32.938701] kasan_set_track+0x25/0x30 [ 32.939246] kasan_save_free_info+0x2b/0x50 [ 32.939831] __kasan_slab_free+0x10a/0x190 [ 32.940425] kmem_cache_free+0x10d/0x4d0 [ 32.941001] rcu_core+0x8c8/0x2860 [ 32.941488] __do_softirq+0x1b7/0x7d4 [ 32.942016] [ 32.942254] Last potentially related work creation: [ 32.942889] kasan_save_stack+0x22/0x50 [ 32.943439] __kasan_record_aux_stack+0x8e/0xa0 [ 32.944064] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.944786] remove_vma+0x139/0x170 [ 32.945282] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.945889] do_vmi_munmap+0x1f1/0x2b0 [ 32.946423] __vm_munmap+0x138/0x3a0 [ 32.946931] __x64_sys_munmap+0x59/0x80 [ 32.947469] do_syscall_64+0x3f/0x90 [ 32.947987] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.948705] [ 32.948944] Second to last potentially related work creation: [ 32.949692] kasan_save_stack+0x22/0x50 [ 32.950244] __kasan_record_aux_stack+0x8e/0xa0 [ 32.950868] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.951573] remove_vma+0x139/0x170 [ 32.952069] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.952689] do_vmi_munmap+0x1f1/0x2b0 [ 32.953199] mmap_region+0x1f9/0x2660 [ 32.953710] do_mmap+0x854/0xf00 [ 32.954165] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.954678] ksys_mmap_pgoff+0x3af/0x500 [ 32.955204] do_syscall_64+0x3f/0x90 [ 32.955707] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.956376] [ 32.956611] The buggy address belongs to the object at ffff88800e4ace80 [ 32.956611] which belongs to the cache vm_area_struct of size 168 [ 32.958216] The buggy address is located 88 bytes inside of [ 32.958216] freed 168-byte region [ffff88800e4ace80, ffff88800e4acf28) [ 32.959768] [ 32.959998] The buggy address belongs to the physical page: [ 32.960694] page:00000000ec0a5dd6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe4ac [ 32.961822] memcg:ffff88800dd3fa01 [ 32.962273] flags: 0x100000000000200(slab|node=0|zone=1) [ 32.962957] page_type: 0xffffffff() [ 32.963441] raw: 0100000000000200 ffff88800879fc80 ffffea000025e300 dead000000000006 [ 32.964421] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dd3fa01 [ 32.965403] page dumped because: kasan: bad access detected [ 32.966113] [ 32.966344] Memory state around the buggy address: [ 32.966962] ffff88800e4acd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 32.967877] ffff88800e4ace00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.968812] >ffff88800e4ace80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.969719] ^ [ 32.970501] ffff88800e4acf00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 32.971418] ffff88800e4acf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.972326] ================================================================== [ 32.973355] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.848033] BUG: Bad rss-counter state mm:0000000099dc1242 type:MM_FILEPAGES val:33 [ 34.849149] BUG: Bad rss-counter state mm:0000000099dc1242 type:MM_ANONPAGES val:22 [ 35.285378] BUG: Bad rss-counter state mm:000000009eb97ad6 type:MM_FILEPAGES val:33 [ 35.286471] BUG: Bad rss-counter state mm:000000009eb97ad6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:15608' (ECDSA) to the list of known hosts. 2023/06/20 08:25:09 fuzzer started 2023/06/20 08:25:09 dialing manager at localhost:44161 2023/06/20 08:25:09 checking machine... 2023/06/20 08:25:09 checking revisions... [ 36.071575] kmemleak: Automatic memory scanning thread ended 2023/06/20 08:25:09 testing simple program... [ 36.128826] cgroup: Unknown subsys name 'net' [ 36.177743] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:25:00 Registers: info registers vcpu 0 RAX=0000000000000003 RBX=0000000000000000 RCX=1ffffffff0ba7a02 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=ffffffff81810591 RSP=ffff888008d7fcb0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=0000000000000128 R12=0000000000000200 R13=0000000000000001 R14=ffffffff813782a8 R15=ffff88801469bec0 RIP=ffffffff812d131b RFL=00000046 [---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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 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=00007fd5342e30a0 CR3=000000000d76a000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=2794d141b8da476700000000000ae988 XMM05=eb2454da893c995c00000000001352c0 XMM06=806171799158d9670000000000133ff0 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff888016447140 RCX=0000000000000000 RDX=ffff88800f583680 RSI=ffffffff83676d3d RDI=ffff8880164471a0 RBP=0000000000000000 RSP=ffff88800fbffb20 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=ffff888016447198 R13=ffff88801bc37300 R14=ffff88800fbffc30 R15=0000000000000024 RIP=ffffffff83676d4b RFL=00000293 [--S-A-C] 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fde74ebf900 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=00007ffe770f6000 CR3=000000000e2ea000 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=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