[ 32.445162] BUG: Bad rss-counter state mm:00000000568f4678 type:MM_FILEPAGES val:33 [ 32.446797] BUG: Bad rss-counter state mm:00000000568f4678 type:MM_ANONPAGES val:22 [ 32.612129] ================================================================== [ 32.613080] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.614045] Read of size 8 at addr ffff88800d7e8c20 by task sshd/219 [ 32.614830] [ 32.615063] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.616067] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.617079] Call Trace: [ 32.617411] [ 32.617718] dump_stack_lvl+0x91/0xf0 [ 32.618227] print_report+0xcc/0x620 [ 32.618724] ? __virt_addr_valid+0x102/0x340 [ 32.619319] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.619971] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.620607] kasan_report+0xbe/0xf0 [ 32.621099] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.621751] vma_interval_tree_remove+0xc75/0xec0 [ 32.622381] vma_prepare+0xc54/0x11a0 [ 32.622880] __split_vma+0x5af/0x950 [ 32.623386] ? __pfx___split_vma+0x10/0x10 [ 32.623940] ? find_held_lock+0x2c/0x110 [ 32.624480] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.625058] ? lock_is_held_type+0x9f/0x120 [ 32.625607] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.626232] ? mtree_range_walk+0x632/0x900 [ 32.626806] ? mas_walk+0x5c7/0x7c0 [ 32.627329] do_vmi_munmap+0x1f1/0x2b0 [ 32.627835] mmap_region+0x1f9/0x2660 [ 32.628335] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.628867] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.629614] ? __pfx_lock_acquire+0x10/0x10 [ 32.630174] ? __pfx_mmap_region+0x10/0x10 [ 32.630717] ? security_mmap_addr+0x7d/0xa0 [ 32.631274] ? get_unmapped_area+0x1f5/0x3f0 [ 32.631850] do_mmap+0x854/0xf00 [ 32.632299] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.632812] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.633395] ksys_mmap_pgoff+0x3af/0x500 [ 32.633928] do_syscall_64+0x3f/0x90 [ 32.634426] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.635114] RIP: 0033:0x7f92d060bd82 [ 32.635589] 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 [ 32.637790] RSP: 002b:00007ffda5171a18 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.638700] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f92d060bd82 [ 32.639559] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f92cfa45000 [ 32.640401] RBP: 00007f92cfa45000 R08: 0000000000000009 R09: 0000000000001000 [ 32.641259] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562769ac4ec0 [ 32.642100] R13: 00007ffda5171a30 R14: 00007ffda5171a60 R15: 00007ffda5171dc0 [ 32.642962] [ 32.643267] [ 32.643481] Allocated by task 212: [ 32.643918] kasan_save_stack+0x22/0x50 [ 32.644425] kasan_set_track+0x25/0x30 [ 32.644920] __kasan_slab_alloc+0x59/0x70 [ 32.645438] kmem_cache_alloc+0x16b/0x370 [ 32.645953] vm_area_dup+0x20/0x160 [ 32.646403] __split_vma+0x170/0x950 [ 32.646877] split_vma+0xc6/0x110 [ 32.647328] mprotect_fixup+0x8d2/0xb30 [ 32.647826] do_mprotect_pkey+0x87e/0xd40 [ 32.648347] __x64_sys_mprotect+0x78/0xc0 [ 32.648868] do_syscall_64+0x3f/0x90 [ 32.649343] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.649990] [ 32.650202] Freed by task 212: [ 32.650589] kasan_save_stack+0x22/0x50 [ 32.651102] kasan_set_track+0x25/0x30 [ 32.651609] kasan_save_free_info+0x2b/0x50 [ 32.652136] __kasan_slab_free+0x10a/0x190 [ 32.652662] kmem_cache_free+0x10d/0x4d0 [ 32.653173] rcu_core+0x8c8/0x2860 [ 32.653619] __do_softirq+0x1b7/0x7d4 [ 32.654097] [ 32.654317] Last potentially related work creation: [ 32.654906] kasan_save_stack+0x22/0x50 [ 32.655419] __kasan_record_aux_stack+0x8e/0xa0 [ 32.655994] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.656640] remove_vma+0x139/0x170 [ 32.657095] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.657649] do_vmi_munmap+0x1f1/0x2b0 [ 32.658129] __vm_munmap+0x138/0x3a0 [ 32.658595] __x64_sys_munmap+0x59/0x80 [ 32.659106] do_syscall_64+0x3f/0x90 [ 32.659579] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.660217] [ 32.660431] Second to last potentially related work creation: [ 32.661111] kasan_save_stack+0x22/0x50 [ 32.661611] __kasan_record_aux_stack+0x8e/0xa0 [ 32.662184] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.662822] remove_vma+0x139/0x170 [ 32.663283] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.663841] do_vmi_munmap+0x1f1/0x2b0 [ 32.664326] __vm_munmap+0x138/0x3a0 [ 32.664795] elf_map+0x26f/0x310 [ 32.665234] load_elf_binary+0xd82/0x5030 [ 32.665763] bprm_execve+0x803/0x1940 [ 32.666233] do_execveat_common+0x734/0x8e0 [ 32.666762] __x64_sys_execve+0x93/0xc0 [ 32.667269] do_syscall_64+0x3f/0x90 [ 32.667748] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.668384] [ 32.668599] The buggy address belongs to the object at ffff88800d7e8bc8 [ 32.668599] which belongs to the cache vm_area_struct of size 168 [ 32.670064] The buggy address is located 88 bytes inside of [ 32.670064] freed 168-byte region [ffff88800d7e8bc8, ffff88800d7e8c70) [ 32.671489] [ 32.671704] The buggy address belongs to the physical page: [ 32.672362] page:000000002dd399ae refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd7e8 [ 32.673435] memcg:ffff88800c551001 [ 32.673860] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 32.674551] page_type: 0xffffffff() [ 32.674996] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 32.675933] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c551001 [ 32.676839] page dumped because: kasan: bad access detected [ 32.677495] [ 32.677708] Memory state around the buggy address: [ 32.678291] ffff88800d7e8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.679163] ffff88800d7e8b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 32.680020] >ffff88800d7e8c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 32.680866] ^ [ 32.681390] ffff88800d7e8c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 32.682245] ffff88800d7e8d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 32.683100] ================================================================== [ 32.684169] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.499755] BUG: Bad rss-counter state mm:000000002b57ffdd type:MM_FILEPAGES val:33 [ 34.501710] BUG: Bad rss-counter state mm:000000002b57ffdd type:MM_ANONPAGES val:22 [ 34.973042] BUG: Bad rss-counter state mm:000000008fa614c2 type:MM_FILEPAGES val:33 [ 34.974598] BUG: Bad rss-counter state mm:000000008fa614c2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:27560' (ECDSA) to the list of known hosts. 2023/06/19 16:14:17 fuzzer started 2023/06/19 16:14:17 dialing manager at localhost:44161 2023/06/19 16:14:17 checking machine... 2023/06/19 16:14:17 checking revisions... [ 35.673362] kmemleak: Automatic memory scanning thread ended 2023/06/19 16:14:17 testing simple program... [ 35.718497] cgroup: Unknown subsys name 'net' [ 35.760186] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:14:15 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=1ffff1100d9c135c RSI=ffffffff85407ea0 RDI=ffff88806ce09ae8 RBP=00000000000000ec RSP=ffff88806ce09a28 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=000000000000ba82 R12=ffff88806ce09af8 R13=ffff88806ce09ae0 R14=ffffffff85407ea0 R15=ffff88806ce09a98 RIP=ffffffff81131c60 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 =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=00007fef29055c10 CR3=00000000169e2000 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=2037313a34313a3631203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036313a34313a3631203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff888015bfb680 RBX=ffff88800f17fa10 RCX=ffffffff81132ffe RDX=ffff88800f17f928 RSI=0000000000000000 RDI=ffff88800f17f9e8 RBP=ffff888015bfb680 RSP=ffff88800f17f928 R8 =0000000000000005 R9 =0000000000000000 R10=ffff88800f17f978 R11=0000000000000000 R12=0000000000000000 R13=ffff88800f17f9a0 R14=ffff88800f17f9c0 R15=ffff88800f17f978 RIP=ffffffff81133010 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f15e1892900 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=00007ffde337d000 CR3=0000000016904000 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=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000