[ 30.718263] BUG: Bad rss-counter state mm:0000000093eb537e type:MM_FILEPAGES val:33 [ 30.719686] BUG: Bad rss-counter state mm:0000000093eb537e type:MM_ANONPAGES val:22 [ 30.876198] ================================================================== [ 30.877261] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.878385] Read of size 8 at addr ffff88800e49b3f8 by task sshd/219 [ 30.879219] [ 30.879436] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.880291] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.881258] Call Trace: [ 30.881596] <TASK> [ 30.881886] dump_stack_lvl+0x91/0xf0 [ 30.882382] print_report+0xcc/0x620 [ 30.882869] ? __virt_addr_valid+0x102/0x340 [ 30.883418] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.884032] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.884649] kasan_report+0xbe/0xf0 [ 30.885122] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.885757] vma_interval_tree_remove+0xc75/0xec0 [ 30.886356] vma_prepare+0xc54/0x11a0 [ 30.886832] __split_vma+0x5af/0x950 [ 30.887294] ? __pfx___split_vma+0x10/0x10 [ 30.887814] ? find_held_lock+0x2c/0x110 [ 30.888329] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.888887] ? lock_is_held_type+0x9f/0x120 [ 30.889485] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.890129] ? mtree_range_walk+0x632/0x900 [ 30.890670] ? mas_walk+0x5c7/0x7c0 [ 30.891159] do_vmi_munmap+0x1f1/0x2b0 [ 30.891651] mmap_region+0x1f9/0x2660 [ 30.892132] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.892635] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.893335] ? __pfx_lock_acquire+0x10/0x10 [ 30.893871] ? __pfx_mmap_region+0x10/0x10 [ 30.894394] ? security_mmap_addr+0x7d/0xa0 [ 30.894920] ? get_unmapped_area+0x1f5/0x3f0 [ 30.895460] do_mmap+0x854/0xf00 [ 30.895893] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.896376] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.896930] ksys_mmap_pgoff+0x3af/0x500 [ 30.897433] do_syscall_64+0x3f/0x90 [ 30.897931] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.898568] RIP: 0033:0x7f6b155ddd82 [ 30.899024] 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 [ 30.901121] RSP: 002b:00007ffee57ab1e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.902014] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6b155ddd82 [ 30.902847] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f6b14a17000 [ 30.903677] RBP: 00007f6b14a17000 R08: 0000000000000009 R09: 0000000000001000 [ 30.904512] R10: 0000000000000812 R11: 0000000000000206 R12: 00005650bf40bb20 [ 30.905345] R13: 00007ffee57ab200 R14: 00007ffee57ab230 R15: 00007ffee57ab590 [ 30.906199] </TASK> [ 30.906491] [ 30.906705] Allocated by task 212: [ 30.907138] kasan_save_stack+0x22/0x50 [ 30.907640] kasan_set_track+0x25/0x30 [ 30.908134] __kasan_slab_alloc+0x59/0x70 [ 30.908660] kmem_cache_alloc+0x16b/0x370 [ 30.909175] vm_area_dup+0x20/0x160 [ 30.909638] __split_vma+0x170/0x950 [ 30.910104] split_vma+0xc6/0x110 [ 30.910544] mprotect_fixup+0x8d2/0xb30 [ 30.911052] do_mprotect_pkey+0x87e/0xd40 [ 30.911573] __x64_sys_mprotect+0x78/0xc0 [ 30.912098] do_syscall_64+0x3f/0x90 [ 30.912569] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.913217] [ 30.913430] Freed by task 212: [ 30.913837] kasan_save_stack+0x22/0x50 [ 30.914344] kasan_set_track+0x25/0x30 [ 30.914836] kasan_save_free_info+0x2b/0x50 [ 30.915360] __kasan_slab_free+0x10a/0x190 [ 30.915885] kmem_cache_free+0x10d/0x4d0 [ 30.916387] rcu_core+0x8c8/0x2860 [ 30.916827] __do_softirq+0x1b7/0x7d4 [ 30.917303] [ 30.917533] Last potentially related work creation: [ 30.918110] kasan_save_stack+0x22/0x50 [ 30.918605] __kasan_record_aux_stack+0x8e/0xa0 [ 30.919164] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.919793] remove_vma+0x139/0x170 [ 30.920235] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.920777] do_vmi_munmap+0x1f1/0x2b0 [ 30.921259] __vm_munmap+0x138/0x3a0 [ 30.921733] __x64_sys_munmap+0x59/0x80 [ 30.922223] do_syscall_64+0x3f/0x90 [ 30.922692] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.923327] [ 30.923539] Second to last potentially related work creation: [ 30.924205] kasan_save_stack+0x22/0x50 [ 30.924699] __kasan_record_aux_stack+0x8e/0xa0 [ 30.925268] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.925903] remove_vma+0x139/0x170 [ 30.926343] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.926896] do_vmi_munmap+0x1f1/0x2b0 [ 30.927376] mmap_region+0x1f9/0x2660 [ 30.927848] do_mmap+0x854/0xf00 [ 30.928275] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.928758] ksys_mmap_pgoff+0x3af/0x500 [ 30.929247] do_syscall_64+0x3f/0x90 [ 30.929737] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.930379] [ 30.930590] The buggy address belongs to the object at ffff88800e49b3a0 [ 30.930590] which belongs to the cache vm_area_struct of size 168 [ 30.932032] The buggy address is located 88 bytes inside of [ 30.932032] freed 168-byte region [ffff88800e49b3a0, ffff88800e49b448) [ 30.933419] [ 30.933641] The buggy address belongs to the physical page: [ 30.934287] page:00000000e52198a6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe49b [ 30.935349] memcg:ffff88800e4a7b01 [ 30.935774] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.936459] page_type: 0xffffffff() [ 30.936909] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 30.937838] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e4a7b01 [ 30.938760] page dumped because: kasan: bad access detected [ 30.939438] [ 30.939654] Memory state around the buggy address: [ 30.940254] ffff88800e49b280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.941145] ffff88800e49b300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.942032] >ffff88800e49b380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.942896] ^ [ 30.943774] ffff88800e49b400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.944642] ffff88800e49b480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.945534] ================================================================== [ 30.946510] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.877224] BUG: Bad rss-counter state mm:00000000831135ab type:MM_FILEPAGES val:33 [ 32.878427] BUG: Bad rss-counter state mm:00000000831135ab type:MM_ANONPAGES val:22 [ 33.343991] BUG: Bad rss-counter state mm:00000000e2bcd7a1 type:MM_FILEPAGES val:33 [ 33.344988] BUG: Bad rss-counter state mm:00000000e2bcd7a1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:12458' (ECDSA) to the list of known hosts. 2023/06/21 02:54:15 fuzzer started 2023/06/21 02:54:15 dialing manager at localhost:36067 2023/06/21 02:54:15 checking machine... 2023/06/21 02:54:15 checking revisions... [ 34.020426] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:54:15 testing simple program... [ 34.063223] cgroup: Unknown subsys name 'net' [ 34.100161] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:54:14 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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 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=00007f909c0465b0 CR3=000000000d9fc000 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=2034313a34353a3230203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034313a34353a3230203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=fbfbfbfbfbfbfbfb RBX=0000000000000000 RCX=0000000000000002 RDX=0000000000000025 RSI=00000000000000fb RDI=ffffed100322d468 RBP=ffffffff813782f8 RSP=ffff88806cf09e00 R8 =0000000000000002 R9 =0000000000000006 R10=ffffed100322d45e R11=00000000000b6a61 R12=ffff88801916a2f0 R13=ffff8880087b8500 R14=ffffffff813782f8 R15=ffff88800cdc7b80 RIP=ffffffff84513445 RFL=00000202 [-------] 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 00007f1db71ae900 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=00007f1db718d020 CR3=000000000e996000 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