[ 24.691862] BUG: Bad rss-counter state mm:00000000c161b3a4 type:MM_FILEPAGES val:33 [ 24.692430] BUG: Bad rss-counter state mm:00000000c161b3a4 type:MM_ANONPAGES val:22 [ 24.834900] ================================================================== [ 24.835785] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.836708] Read of size 8 at addr ffff888017f9aed8 by task sshd/219 [ 24.837461] [ 24.837670] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.838661] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.839616] Call Trace: [ 24.839927] [ 24.840206] dump_stack_lvl+0x91/0xf0 [ 24.840717] print_report+0xcc/0x620 [ 24.841199] ? __virt_addr_valid+0x102/0x340 [ 24.841728] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.842323] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.842917] kasan_report+0xbe/0xf0 [ 24.843380] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.843977] vma_interval_tree_remove+0xc75/0xec0 [ 24.844564] vma_prepare+0xc54/0x11a0 [ 24.845039] __split_vma+0x5af/0x950 [ 24.845497] ? __pfx___split_vma+0x10/0x10 [ 24.846009] ? find_held_lock+0x2c/0x110 [ 24.846511] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.847061] ? lock_is_held_type+0x9f/0x120 [ 24.847582] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.848173] ? mtree_range_walk+0x632/0x900 [ 24.848706] ? mas_walk+0x5c7/0x7c0 [ 24.849185] do_vmi_munmap+0x1f1/0x2b0 [ 24.849668] mmap_region+0x1f9/0x2660 [ 24.850138] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.850644] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.851341] ? __pfx_lock_acquire+0x10/0x10 [ 24.851862] ? __pfx_mmap_region+0x10/0x10 [ 24.852379] ? security_mmap_addr+0x7d/0xa0 [ 24.852901] ? get_unmapped_area+0x1f5/0x3f0 [ 24.853448] do_mmap+0x854/0xf00 [ 24.853900] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.854379] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.854931] ksys_mmap_pgoff+0x3af/0x500 [ 24.855444] do_syscall_64+0x3f/0x90 [ 24.855921] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.856549] RIP: 0033:0x7fbe3859bd82 [ 24.857021] 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 [ 24.859084] RSP: 002b:00007ffd07ac49a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.860185] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fbe3859bd82 [ 24.861037] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fbe379d5000 [ 24.861866] RBP: 00007fbe379d5000 R08: 0000000000000009 R09: 0000000000001000 [ 24.862701] R10: 0000000000000812 R11: 0000000000000206 R12: 000056162cb84f70 [ 24.863525] R13: 00007ffd07ac49c0 R14: 00007ffd07ac49f0 R15: 00007ffd07ac4d50 [ 24.864363] [ 24.864649] [ 24.864858] Allocated by task 212: [ 24.865311] kasan_save_stack+0x22/0x50 [ 24.865812] kasan_set_track+0x25/0x30 [ 24.866304] __kasan_slab_alloc+0x59/0x70 [ 24.866817] kmem_cache_alloc+0x16b/0x370 [ 24.867336] vm_area_dup+0x20/0x160 [ 24.867783] __split_vma+0x170/0x950 [ 24.868234] split_vma+0xc6/0x110 [ 24.868668] mprotect_fixup+0x8d2/0xb30 [ 24.869171] do_mprotect_pkey+0x87e/0xd40 [ 24.869685] __x64_sys_mprotect+0x78/0xc0 [ 24.870195] do_syscall_64+0x3f/0x90 [ 24.870667] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.871287] [ 24.871496] Freed by task 0: [ 24.871859] kasan_save_stack+0x22/0x50 [ 24.872353] kasan_set_track+0x25/0x30 [ 24.872829] kasan_save_free_info+0x2b/0x50 [ 24.873365] __kasan_slab_free+0x10a/0x190 [ 24.873884] kmem_cache_free+0x10d/0x4d0 [ 24.874382] rcu_core+0x8c8/0x2860 [ 24.874816] __do_softirq+0x1b7/0x7d4 [ 24.875280] [ 24.875490] Last potentially related work creation: [ 24.876024] kasan_save_stack+0x22/0x50 [ 24.876519] __kasan_record_aux_stack+0x8e/0xa0 [ 24.877085] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.877708] remove_vma+0x139/0x170 [ 24.878149] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.878692] do_vmi_munmap+0x1f1/0x2b0 [ 24.879222] __vm_munmap+0x138/0x3a0 [ 24.879679] __x64_sys_munmap+0x59/0x80 [ 24.880163] do_syscall_64+0x3f/0x90 [ 24.880624] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.881266] [ 24.881477] The buggy address belongs to the object at ffff888017f9ae80 [ 24.881477] which belongs to the cache vm_area_struct of size 168 [ 24.882924] The buggy address is located 88 bytes inside of [ 24.882924] freed 168-byte region [ffff888017f9ae80, ffff888017f9af28) [ 24.884464] [ 24.884680] The buggy address belongs to the physical page: [ 24.885346] page:00000000ad9a24fc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17f9a [ 24.886445] memcg:ffff88800ec8b601 [ 24.886881] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.887599] page_type: 0xffffffff() [ 24.888057] raw: 0100000000000200 ffff88800879fc80 ffffea0000403700 dead000000000005 [ 24.888990] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ec8b601 [ 24.889931] page dumped because: kasan: bad access detected [ 24.890603] [ 24.890818] Memory state around the buggy address: [ 24.891410] ffff888017f9ad80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 24.892278] ffff888017f9ae00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 24.893160] >ffff888017f9ae80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.894022] ^ [ 24.894746] ffff888017f9af00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 24.895598] ffff888017f9af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.896449] ================================================================== [ 24.897410] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.833848] BUG: Bad rss-counter state mm:000000003e51cd4c type:MM_FILEPAGES val:33 [ 26.835008] BUG: Bad rss-counter state mm:000000003e51cd4c type:MM_ANONPAGES val:22 [ 27.321474] BUG: Bad rss-counter state mm:000000001e6fa865 type:MM_FILEPAGES val:33 [ 27.322636] BUG: Bad rss-counter state mm:000000001e6fa865 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:8229' (ECDSA) to the list of known hosts. 2023/06/19 16:46:36 fuzzer started 2023/06/19 16:46:36 dialing manager at localhost:44161 2023/06/19 16:46:36 checking machine... 2023/06/19 16:46:36 checking revisions... [ 27.991688] kmemleak: Automatic memory scanning thread ended 2023/06/19 16:46:36 testing simple program... [ 28.034844] cgroup: Unknown subsys name 'net' [ 28.083255] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:46:35 Registers: info registers vcpu 0 RAX=0000000000000002 RBX=0000000000000001 RCX=ffffffff8609f9ba RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff888008d7f9d0 RSP=ffff888008d7f908 R8 =ffffffff8609f9be R9 =ffff888008d7f9b8 R10=0000000000038001 R11=00000000000078fb R12=ffff888008d7f9d8 R13=ffff888008d7f9c0 R14=ffff888008d7fed0 R15=ffff888008d7f978 RIP=ffffffff81130bc1 RFL=00000292 [--S-A--] 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=00007ff8dcb8c000 CR3=00000000144e6000 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=00000000000000000000000000000000 XMM01=c554f32dd456f2b4c341337315177752 XMM02=2c67c8bc2e329bc3000000000011c718 XMM03=fb795ef6d657705600000000001235a0 XMM04=d868270f0e7d312600000000000ae988 XMM05=dfcdbad4f1609c370000000000132dd8 XMM06=04b1287fee6bf9900000000000131fb0 XMM07=e042d86d42eb936e0000000000123820 XMM08=e7abcb16c2f387ec000000000011c778 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=0000000000000002 RCX=ffff88800f578000 RDX=ffff88800f577501 RSI=0000000000000001 RDI=ffff88806cf09ab8 RBP=ffff88800f577568 RSP=ffff88806cf09a10 R8 =0000000000000000 R9 =ffff88806cf09ae8 R10=0000000000038001 R11=000000000000790e R12=0000000000000008 R13=ffff88800f570000 R14=ffff88800f578000 R15=ffff88806cf09aa8 RIP=ffffffff811304ce 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f019d3e1900 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=00007ffd6544b000 CR3=000000001b83a000 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