[ 29.751574] BUG: Bad rss-counter state mm:0000000017e9036c type:MM_FILEPAGES val:33 [ 29.753678] BUG: Bad rss-counter state mm:0000000017e9036c type:MM_ANONPAGES val:22 [ 29.926963] ================================================================== [ 29.927860] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.928770] Read of size 8 at addr ffff88800fba86b0 by task sshd/219 [ 29.929506] [ 29.929801] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.930626] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.931565] Call Trace: [ 29.931872] [ 29.932144] dump_stack_lvl+0x91/0xf0 [ 29.932624] print_report+0xcc/0x620 [ 29.933115] ? __virt_addr_valid+0x102/0x340 [ 29.933647] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.934321] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.935069] kasan_report+0xbe/0xf0 [ 29.935560] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.936191] vma_interval_tree_remove+0xc75/0xec0 [ 29.936816] vma_prepare+0xc54/0x11a0 [ 29.937300] __split_vma+0x5af/0x950 [ 29.937776] ? __pfx___split_vma+0x10/0x10 [ 29.938314] ? find_held_lock+0x2c/0x110 [ 29.938844] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.939417] ? lock_is_held_type+0x9f/0x120 [ 29.939961] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.940572] ? mtree_range_walk+0x632/0x900 [ 29.941135] ? mas_walk+0x5c7/0x7c0 [ 29.941615] do_vmi_munmap+0x1f1/0x2b0 [ 29.942107] mmap_region+0x1f9/0x2660 [ 29.942598] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.943112] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.943829] ? __pfx_lock_acquire+0x10/0x10 [ 29.944364] ? __pfx_mmap_region+0x10/0x10 [ 29.944920] ? security_mmap_addr+0x7d/0xa0 [ 29.945451] ? get_unmapped_area+0x1f5/0x3f0 [ 29.946003] do_mmap+0x854/0xf00 [ 29.946447] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.946946] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.947509] ksys_mmap_pgoff+0x3af/0x500 [ 29.948018] do_syscall_64+0x3f/0x90 [ 29.948501] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.949160] RIP: 0033:0x7f1f1cb6bd82 [ 29.949626] 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 [ 29.951747] RSP: 002b:00007ffc140771e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.952654] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1f1cb6bd82 [ 29.953528] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1f1bfa5000 [ 29.954378] RBP: 00007f1f1bfa5000 R08: 0000000000000009 R09: 0000000000001000 [ 29.955227] R10: 0000000000000812 R11: 0000000000000206 R12: 00005562d6117ec0 [ 29.956086] R13: 00007ffc14077200 R14: 00007ffc14077230 R15: 00007ffc14077590 [ 29.956941] [ 29.957234] [ 29.957451] Allocated by task 212: [ 29.957879] kasan_save_stack+0x22/0x50 [ 29.958377] kasan_set_track+0x25/0x30 [ 29.958875] __kasan_slab_alloc+0x59/0x70 [ 29.959394] kmem_cache_alloc+0x16b/0x370 [ 29.959909] vm_area_dup+0x20/0x160 [ 29.960358] __split_vma+0x170/0x950 [ 29.960825] split_vma+0xc6/0x110 [ 29.961261] mprotect_fixup+0x8d2/0xb30 [ 29.961769] do_mprotect_pkey+0x87e/0xd40 [ 29.962286] __x64_sys_mprotect+0x78/0xc0 [ 29.962802] do_syscall_64+0x3f/0x90 [ 29.963278] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.963916] [ 29.964133] Freed by task 203: [ 29.964522] kasan_save_stack+0x22/0x50 [ 29.965039] kasan_set_track+0x25/0x30 [ 29.965535] kasan_save_free_info+0x2b/0x50 [ 29.966065] __kasan_slab_free+0x10a/0x190 [ 29.966594] kmem_cache_free+0x10d/0x4d0 [ 29.967099] rcu_core+0x8c8/0x2860 [ 29.967545] __do_softirq+0x1b7/0x7d4 [ 29.968020] [ 29.968237] Last potentially related work creation: [ 29.968821] kasan_save_stack+0x22/0x50 [ 29.969324] __kasan_record_aux_stack+0x8e/0xa0 [ 29.969892] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.970531] remove_vma+0x139/0x170 [ 29.970979] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.971530] do_vmi_munmap+0x1f1/0x2b0 [ 29.972012] __vm_munmap+0x138/0x3a0 [ 29.972486] __x64_sys_munmap+0x59/0x80 [ 29.973097] do_syscall_64+0x3f/0x90 [ 29.973669] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.974442] [ 29.974698] The buggy address belongs to the object at ffff88800fba8658 [ 29.974698] which belongs to the cache vm_area_struct of size 168 [ 29.976407] The buggy address is located 88 bytes inside of [ 29.976407] freed 168-byte region [ffff88800fba8658, ffff88800fba8700) [ 29.978048] [ 29.978303] The buggy address belongs to the physical page: [ 29.979071] page:0000000058532ad7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfba8 [ 29.980332] memcg:ffff88800c98fb01 [ 29.980837] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.981593] page_type: 0xffffffff() [ 29.982120] raw: 0100000000000200 ffff88800879fc80 ffffea0000385f80 dead000000000002 [ 29.983217] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c98fb01 [ 29.984290] page dumped because: kasan: bad access detected [ 29.985082] [ 29.985338] Memory state around the buggy address: [ 29.986010] ffff88800fba8580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.987007] ffff88800fba8600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 29.988013] >ffff88800fba8680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.989210] ^ [ 29.989933] ffff88800fba8700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 29.990917] ffff88800fba8780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 29.991894] ================================================================== [ 29.993203] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.308708] BUG: Bad rss-counter state mm:000000006a359ab3 type:MM_FILEPAGES val:33 [ 32.309854] BUG: Bad rss-counter state mm:000000006a359ab3 type:MM_ANONPAGES val:22 [ 32.718456] BUG: Bad rss-counter state mm:000000001ffd36d9 type:MM_FILEPAGES val:33 [ 32.719738] BUG: Bad rss-counter state mm:000000001ffd36d9 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:14173' (ECDSA) to the list of known hosts. 2023/06/20 01:34:35 fuzzer started 2023/06/20 01:34:36 dialing manager at localhost:44161 2023/06/20 01:34:36 checking machine... 2023/06/20 01:34:36 checking revisions... [ 33.476678] kmemleak: Automatic memory scanning thread ended 2023/06/20 01:34:36 testing simple program... [ 33.520217] cgroup: Unknown subsys name 'net' [ 33.555372] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:34:30 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=0000000000000000 RCX=ffffffff8153425b RDX=fffffbfff0ba77db RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=ffffffff8452fffc RSP=ffff888018357880 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=ffff88800c3573c0 R13=0000000000000000 R14=0000000000000001 R15=0000000000000d40 RIP=ffffffff81534263 RFL=00000047 [---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 00007f93c5a1c700 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=00007fabe5135618 CR3=000000000e36a000 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=2035333a34333a3130203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732035333a34333a3130203032 XMM08=3d656e696c646d632022656369767265 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=ffff888008c58400 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=00007f71df91f810 CR3=000000000c980000 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=64bcf3fb1234c2a154404418afc6c102 XMM02=000000000011e228ec2efd57dc4c00df XMM03=00000000001241080419ccca5840351f XMM04=db12e064ffe5624400000000000ae988 XMM05=dfcdbad4f1609c370000000000133ca0 XMM06=074a6208534c643c0000000000132e78 XMM07=e042d86d42eb936e0000000000124388 XMM08=0419ccca5840351f000000000011e288 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000