[ 30.571309] BUG: Bad rss-counter state mm:0000000022636167 type:MM_FILEPAGES val:33 [ 30.572616] BUG: Bad rss-counter state mm:0000000022636167 type:MM_ANONPAGES val:22 [ 30.703763] ================================================================== [ 30.704481] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.705207] Read of size 8 at addr ffff88800e1dc3f8 by task sshd/225 [ 30.705962] [ 30.706137] CPU: 1 PID: 225 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.706834] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.707586] Call Trace: [ 30.707829] [ 30.708047] dump_stack_lvl+0x91/0xf0 [ 30.708425] print_report+0xcc/0x620 [ 30.708808] ? __virt_addr_valid+0x102/0x340 [ 30.709234] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.709702] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.710171] kasan_report+0xbe/0xf0 [ 30.710551] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.711029] vma_interval_tree_remove+0xc75/0xec0 [ 30.711484] vma_prepare+0xc54/0x11a0 [ 30.711850] __split_vma+0x5af/0x950 [ 30.712218] ? __pfx___split_vma+0x10/0x10 [ 30.712624] ? find_held_lock+0x2c/0x110 [ 30.713018] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.713447] ? lock_is_held_type+0x9f/0x120 [ 30.713862] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.714321] ? mtree_range_walk+0x632/0x900 [ 30.714767] ? mas_walk+0x5c7/0x7c0 [ 30.715131] do_vmi_munmap+0x1f1/0x2b0 [ 30.715525] mmap_region+0x1f9/0x2660 [ 30.715873] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.716199] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.716666] ? __pfx_lock_acquire+0x10/0x10 [ 30.717013] ? __pfx_mmap_region+0x10/0x10 [ 30.717360] ? security_mmap_addr+0x7d/0xa0 [ 30.717707] ? get_unmapped_area+0x1f5/0x3f0 [ 30.718066] do_mmap+0x854/0xf00 [ 30.718356] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.718676] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.719040] ksys_mmap_pgoff+0x3af/0x500 [ 30.719368] do_syscall_64+0x3f/0x90 [ 30.719676] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.720105] RIP: 0033:0x7fbbcc9a7d82 [ 30.720403] 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 [ 30.721795] RSP: 002b:00007ffe371c9558 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.722385] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fbbcc9a7d82 [ 30.722940] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fbbcbde1000 [ 30.723492] RBP: 00007fbbcbde1000 R08: 0000000000000009 R09: 0000000000001000 [ 30.724041] R10: 0000000000000812 R11: 0000000000000206 R12: 00005593a448ff70 [ 30.724598] R13: 00007ffe371c9570 R14: 00007ffe371c95a0 R15: 00007ffe371c9900 [ 30.725162] [ 30.725349] [ 30.725488] Allocated by task 212: [ 30.725767] kasan_save_stack+0x22/0x50 [ 30.726093] kasan_set_track+0x25/0x30 [ 30.726414] __kasan_slab_alloc+0x59/0x70 [ 30.726772] kmem_cache_alloc+0x16b/0x370 [ 30.727108] vm_area_dup+0x20/0x160 [ 30.727407] __split_vma+0x170/0x950 [ 30.727717] split_vma+0xc6/0x110 [ 30.728000] mprotect_fixup+0x8d2/0xb30 [ 30.728330] do_mprotect_pkey+0x87e/0xd40 [ 30.728670] __x64_sys_mprotect+0x78/0xc0 [ 30.729017] do_syscall_64+0x3f/0x90 [ 30.729324] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.729746] [ 30.729885] Freed by task 204: [ 30.730144] kasan_save_stack+0x22/0x50 [ 30.730475] kasan_set_track+0x25/0x30 [ 30.730798] kasan_save_free_info+0x2b/0x50 [ 30.731146] __kasan_slab_free+0x10a/0x190 [ 30.731489] kmem_cache_free+0x10d/0x4d0 [ 30.731814] rcu_core+0x8c8/0x2860 [ 30.732107] __do_softirq+0x1b7/0x7d4 [ 30.732420] [ 30.732563] Last potentially related work creation: [ 30.732953] kasan_save_stack+0x22/0x50 [ 30.733279] __kasan_record_aux_stack+0x8e/0xa0 [ 30.733658] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.734081] remove_vma+0x139/0x170 [ 30.734373] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.734756] do_vmi_munmap+0x1f1/0x2b0 [ 30.735068] __vm_munmap+0x138/0x3a0 [ 30.735373] __x64_sys_munmap+0x59/0x80 [ 30.735700] do_syscall_64+0x3f/0x90 [ 30.736005] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.736427] [ 30.736563] Second to last potentially related work creation: [ 30.737009] kasan_save_stack+0x22/0x50 [ 30.737333] __kasan_record_aux_stack+0x8e/0xa0 [ 30.737700] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.738114] remove_vma+0x139/0x170 [ 30.738405] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.738774] do_vmi_munmap+0x1f1/0x2b0 [ 30.739089] mmap_region+0x1f9/0x2660 [ 30.739403] do_mmap+0x854/0xf00 [ 30.739672] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.739997] ksys_mmap_pgoff+0x7d/0x500 [ 30.740316] do_syscall_64+0x3f/0x90 [ 30.740618] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.741032] [ 30.741171] The buggy address belongs to the object at ffff88800e1dc3a0 [ 30.741171] which belongs to the cache vm_area_struct of size 168 [ 30.742121] The buggy address is located 88 bytes inside of [ 30.742121] freed 168-byte region [ffff88800e1dc3a0, ffff88800e1dc448) [ 30.743052] [ 30.743191] The buggy address belongs to the physical page: [ 30.743619] page:000000002cca9cf8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1dc [ 30.744326] memcg:ffff88800e083501 [ 30.744604] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.745015] page_type: 0xffffffff() [ 30.745302] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 30.745899] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e083501 [ 30.746498] page dumped because: kasan: bad access detected [ 30.746931] [ 30.747071] Memory state around the buggy address: [ 30.747479] ffff88800e1dc280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.748120] ffff88800e1dc300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.748683] >ffff88800e1dc380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.749230] ^ [ 30.749775] ffff88800e1dc400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.750335] ffff88800e1dc480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.750907] ================================================================== [ 30.751532] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.583587] BUG: Bad rss-counter state mm:0000000078a82ee9 type:MM_FILEPAGES val:33 [ 32.585164] BUG: Bad rss-counter state mm:0000000078a82ee9 type:MM_ANONPAGES val:22 [ 33.074632] BUG: Bad rss-counter state mm:00000000c41a5f88 type:MM_FILEPAGES val:33 [ 33.075639] BUG: Bad rss-counter state mm:00000000c41a5f88 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7809' (ECDSA) to the list of known hosts. 2023/06/20 23:07:15 fuzzer started 2023/06/20 23:07:15 dialing manager at localhost:36067 2023/06/20 23:07:15 checking machine... 2023/06/20 23:07:15 checking revisions... [ 33.803095] kmemleak: Automatic memory scanning thread ended 2023/06/20 23:07:15 testing simple program... [ 33.849658] cgroup: Unknown subsys name 'net' [ 33.894762] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:07:15 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=00007fa677357fe0 CR3=000000000e9ac000 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=2034313a37303a3332203032206e754a XMM01=73732878696e755f6d6170203a5d3433 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3433325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034313a37303a3332203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=1ffff11003774fa2 RCX=0000000000000002 RDX=ffff888016a08000 RSI=ffffffff8363e7e4 RDI=ffff88801bba7dd8 RBP=0000000000000008 RSP=ffff88801bba7cf8 R8 =00007fffc00bac0c R9 =00007fffc00bac08 R10=1ffff11003774ff9 R11=0000000000000000 R12=00007fffc00bac0c R13=0000000000000042 R14=dffffc0000000000 R15=00007fffc00bcfc0 RIP=ffffffff8363e7f6 RFL=00000206 [-----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 00007fa0d9294900 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=00007fffc00bb000 CR3=000000000d8ce000 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