[ 34.573478] BUG: Bad rss-counter state mm:000000004947e0b3 type:MM_FILEPAGES val:33 [ 34.574518] BUG: Bad rss-counter state mm:000000004947e0b3 type:MM_ANONPAGES val:22 [ 34.735083] ================================================================== [ 34.735944] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 34.736842] Read of size 8 at addr ffff88800edba880 by task sshd/219 [ 34.737569] [ 34.737779] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 34.738731] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 34.739644] Call Trace: [ 34.739954] [ 34.740228] dump_stack_lvl+0x91/0xf0 [ 34.740710] print_report+0xcc/0x620 [ 34.741169] ? __virt_addr_valid+0x102/0x340 [ 34.741698] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.742307] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.742888] kasan_report+0xbe/0xf0 [ 34.743341] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.743929] vma_interval_tree_remove+0xc75/0xec0 [ 34.744502] vma_prepare+0xc54/0x11a0 [ 34.744961] __split_vma+0x5af/0x950 [ 34.745415] ? __pfx___split_vma+0x10/0x10 [ 34.745918] ? find_held_lock+0x2c/0x110 [ 34.746432] do_vmi_align_munmap+0x2ba/0x11f0 [ 34.746986] ? lock_is_held_type+0x9f/0x120 [ 34.747512] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 34.748112] ? mtree_range_walk+0x632/0x900 [ 34.748667] ? mas_walk+0x5c7/0x7c0 [ 34.749150] do_vmi_munmap+0x1f1/0x2b0 [ 34.749651] mmap_region+0x1f9/0x2660 [ 34.750132] ? vm_mmap_pgoff+0x15c/0x3a0 [ 34.750665] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 34.751370] ? __pfx_lock_acquire+0x10/0x10 [ 34.751910] ? __pfx_mmap_region+0x10/0x10 [ 34.752453] ? security_mmap_addr+0x7d/0xa0 [ 34.752988] ? get_unmapped_area+0x1f5/0x3f0 [ 34.753545] do_mmap+0x854/0xf00 [ 34.753978] vm_mmap_pgoff+0x1a6/0x3a0 [ 34.754486] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 34.755050] ksys_mmap_pgoff+0x3af/0x500 [ 34.755556] do_syscall_64+0x3f/0x90 [ 34.756034] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.756678] RIP: 0033:0x7f054d85fd82 [ 34.757129] 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 [ 34.759273] RSP: 002b:00007fff58c35a68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 34.760176] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f054d85fd82 [ 34.761017] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f054cc99000 [ 34.761864] RBP: 00007f054cc99000 R08: 0000000000000009 R09: 0000000000001000 [ 34.762715] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559c6e978f70 [ 34.763558] R13: 00007fff58c35a80 R14: 00007fff58c35ab0 R15: 00007fff58c35e10 [ 34.764411] [ 34.764711] [ 34.764921] Allocated by task 212: [ 34.765337] kasan_save_stack+0x22/0x50 [ 34.765836] kasan_set_track+0x25/0x30 [ 34.766343] __kasan_slab_alloc+0x59/0x70 [ 34.766866] kmem_cache_alloc+0x16b/0x370 [ 34.767386] vm_area_dup+0x20/0x160 [ 34.767845] __split_vma+0x170/0x950 [ 34.768300] split_vma+0xc6/0x110 [ 34.768741] mprotect_fixup+0x8d2/0xb30 [ 34.769243] do_mprotect_pkey+0x87e/0xd40 [ 34.769765] __x64_sys_mprotect+0x78/0xc0 [ 34.770305] do_syscall_64+0x3f/0x90 [ 34.770785] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.771428] [ 34.771639] Freed by task 212: [ 34.772026] kasan_save_stack+0x22/0x50 [ 34.772525] kasan_set_track+0x25/0x30 [ 34.773011] kasan_save_free_info+0x2b/0x50 [ 34.773542] __kasan_slab_free+0x10a/0x190 [ 34.774066] kmem_cache_free+0x10d/0x4d0 [ 34.774595] rcu_core+0x8c8/0x2860 [ 34.775044] __do_softirq+0x1b7/0x7d4 [ 34.775528] [ 34.775747] Last potentially related work creation: [ 34.776328] kasan_save_stack+0x22/0x50 [ 34.776831] __kasan_record_aux_stack+0x8e/0xa0 [ 34.777423] __call_rcu_common.constprop.0+0x6a/0xb90 [ 34.778066] remove_vma+0x139/0x170 [ 34.778540] do_vmi_align_munmap+0xd4a/0x11f0 [ 34.779092] do_vmi_munmap+0x1f1/0x2b0 [ 34.779579] __vm_munmap+0x138/0x3a0 [ 34.780055] __x64_sys_munmap+0x59/0x80 [ 34.780545] do_syscall_64+0x3f/0x90 [ 34.781010] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.781652] [ 34.781865] The buggy address belongs to the object at ffff88800edba828 [ 34.781865] which belongs to the cache vm_area_struct of size 168 [ 34.783332] The buggy address is located 88 bytes inside of [ 34.783332] freed 168-byte region [ffff88800edba828, ffff88800edba8d0) [ 34.784742] [ 34.784951] The buggy address belongs to the physical page: [ 34.785604] page:00000000ffdf37c8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xedba [ 34.786693] memcg:ffff88800dd6a601 [ 34.787113] flags: 0x100000000000200(slab|node=0|zone=1) [ 34.787760] page_type: 0xffffffff() [ 34.788213] raw: 0100000000000200 ffff88800879fc80 ffffea00003ab280 dead000000000002 [ 34.789136] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dd6a601 [ 34.790035] page dumped because: kasan: bad access detected [ 34.790717] [ 34.790931] Memory state around the buggy address: [ 34.791521] ffff88800edba780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 34.792370] ffff88800edba800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 34.793227] >ffff88800edba880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 34.794087] ^ [ 34.794508] ffff88800edba900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.795372] ffff88800edba980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 34.796224] ================================================================== [ 34.797195] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 36.661552] BUG: Bad rss-counter state mm:0000000001ec504b type:MM_FILEPAGES val:33 [ 36.662579] BUG: Bad rss-counter state mm:0000000001ec504b type:MM_ANONPAGES val:22 [ 37.152665] BUG: Bad rss-counter state mm:000000000d581431 type:MM_FILEPAGES val:33 [ 37.153438] BUG: Bad rss-counter state mm:000000000d581431 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18234' (ECDSA) to the list of known hosts. 2023/06/19 20:47:13 fuzzer started 2023/06/19 20:47:13 dialing manager at localhost:44161 2023/06/19 20:47:13 checking machine... 2023/06/19 20:47:13 checking revisions... [ 37.864660] kmemleak: Automatic memory scanning thread ended 2023/06/19 20:47:13 testing simple program... [ 37.931600] cgroup: Unknown subsys name 'net' [ 37.969224] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:47:02 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=1ffff11002065eee RCX=ffffffff812d8ec3 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=0000000000000001 RSP=ffff88801032f760 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=3830306234386136 R12=0000000000000000 R13=0000000000000000 R14=ffff8880197ca398 R15=0000000000000000 RIP=ffffffff812d8ed0 RFL=00000247 [---Z-PC] 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 00007f643b970900 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=00007f643ad6b650 CR3=000000000d844000 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=57f10fd6ae8b598600000000000ae988 XMM05=a3666c1023f0c2300000000000133c90 XMM06=806171799158d9670000000000131cd8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff8180c8da RBX=ffffffff813ad420 RCX=ffffffff86137d01 RDX=1ffff110038cef46 RSI=ffffffff8180c8da RDI=ffff88801c677aa0 RBP=ffff88801c677a70 RSP=ffff88801c6779d0 R8 =ffffffff86137dd6 R9 =ffff88801c677a18 R10=0000000000038001 R11=0000000000020f00 R12=ffff88801c677aa0 R13=0000000000000000 R14=ffff88800dafd1c0 R15=ffff888019be3280 RIP=ffffffff813ad420 RFL=00000282 [--S----] 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 00007f178d124900 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=00007f178d103020 CR3=000000000b9fa000 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=00000000000000000000000000000000 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