[ 23.916721] BUG: Bad rss-counter state mm:000000001e38f752 type:MM_FILEPAGES val:33 [ 23.918045] BUG: Bad rss-counter state mm:000000001e38f752 type:MM_ANONPAGES val:22 [ 24.087220] ================================================================== [ 24.088149] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.089106] Read of size 8 at addr ffff888009896798 by task sshd/220 [ 24.089915] [ 24.090142] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.091064] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.092058] Call Trace: [ 24.092382] [ 24.092698] dump_stack_lvl+0x91/0xf0 Debian GNU/Linux[ 24.093208] print_report+0xcc/0x620 11 syzkaller tt[ 24.093861] ? __virt_addr_valid+0x102/0x340 yS0[ 24.094583] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.095320] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.095996] kasan_report+0xbe/0xf0 [ 24.096532] ? vma_interval_tree_remove+0xc75/0xec0 syzkaller[ 24.097224] vma_interval_tree_remove+0xc75/0xec0 [ 24.097971] vma_prepare+0xc54/0x11a0 [ 24.098495] __split_vma+0x5af/0x950 [ 24.099011] ? __pfx___split_vma+0x10/0x10 login: [ 24.099582] ? find_held_lock+0x2c/0x110 [ 24.100222] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.100826] ? lock_is_held_type+0x9f/0x120 [ 24.101415] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.102061] ? mtree_range_walk+0x632/0x900 [ 24.102660] ? mas_walk+0x5c7/0x7c0 [ 24.103173] do_vmi_munmap+0x1f1/0x2b0 [ 24.103695] mmap_region+0x1f9/0x2660 [ 24.104213] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.104755] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.105521] ? __pfx_lock_acquire+0x10/0x10 [ 24.106082] ? __pfx_mmap_region+0x10/0x10 [ 24.106638] ? security_mmap_addr+0x7d/0xa0 [ 24.107207] ? get_unmapped_area+0x1f5/0x3f0 [ 24.107786] do_mmap+0x854/0xf00 [ 24.108245] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.108770] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.109380] ksys_mmap_pgoff+0x3af/0x500 [ 24.109916] do_syscall_64+0x3f/0x90 [ 24.110412] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.111098] RIP: 0033:0x7f9cb6a3cd82 [ 24.111580] 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 [ 24.113865] RSP: 002b:00007fff70a545d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.114824] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9cb6a3cd82 [ 24.115718] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f9cb5e76000 [ 24.116613] RBP: 00007f9cb5e76000 R08: 0000000000000009 R09: 0000000000001000 [ 24.117531] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ddd0177ec0 [ 24.118420] R13: 00007fff70a545f0 R14: 00007fff70a54620 R15: 00007fff70a54980 [ 24.119320] [ 24.119624] [ 24.119850] Allocated by task 213: [ 24.120301] kasan_save_stack+0x22/0x50 [ 24.120818] kasan_set_track+0x25/0x30 [ 24.121337] __kasan_slab_alloc+0x59/0x70 [ 24.121876] kmem_cache_alloc+0x16b/0x370 [ 24.122405] vm_area_dup+0x20/0x160 [ 24.122859] __split_vma+0x170/0x950 [ 24.123327] split_vma+0xc6/0x110 [ 24.123774] mprotect_fixup+0x8d2/0xb30 [ 24.124277] do_mprotect_pkey+0x87e/0xd40 [ 24.124809] __x64_sys_mprotect+0x78/0xc0 [ 24.125345] do_syscall_64+0x3f/0x90 [ 24.125826] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.126465] [ 24.126684] Freed by task 213: [ 24.127086] kasan_save_stack+0x22/0x50 [ 24.127589] kasan_set_track+0x25/0x30 [ 24.128091] kasan_save_free_info+0x2b/0x50 [ 24.128620] __kasan_slab_free+0x10a/0x190 [ 24.129152] kmem_cache_free+0x10d/0x4d0 [ 24.129672] rcu_core+0x8c8/0x2860 [ 24.130123] __do_softirq+0x1b7/0x7d4 [ 24.130609] [ 24.130836] Last potentially related work creation: [ 24.131424] kasan_save_stack+0x22/0x50 [ 24.131935] __kasan_record_aux_stack+0x8e/0xa0 [ 24.132518] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.133160] remove_vma+0x139/0x170 [ 24.133627] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.134184] do_vmi_munmap+0x1f1/0x2b0 [ 24.134683] __vm_munmap+0x138/0x3a0 [ 24.135155] __x64_sys_munmap+0x59/0x80 [ 24.135658] do_syscall_64+0x3f/0x90 [ 24.136138] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.136781] [ 24.136999] Second to last potentially related work creation: [ 24.137695] kasan_save_stack+0x22/0x50 [ 24.138208] __kasan_record_aux_stack+0x8e/0xa0 [ 24.138780] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.139424] remove_vma+0x139/0x170 [ 24.139885] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.140441] do_vmi_munmap+0x1f1/0x2b0 [ 24.140934] mmap_region+0x1f9/0x2660 [ 24.141429] do_mmap+0x854/0xf00 [ 24.141864] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.142350] ksys_mmap_pgoff+0x3af/0x500 [ 24.142857] do_syscall_64+0x3f/0x90 [ 24.143340] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.143991] [ 24.144211] The buggy address belongs to the object at ffff888009896740 [ 24.144211] which belongs to the cache vm_area_struct of size 168 [ 24.145712] The buggy address is located 88 bytes inside of [ 24.145712] freed 168-byte region [ffff888009896740, ffff8880098967e8) [ 24.147121] [ 24.147340] The buggy address belongs to the physical page: [ 24.148007] page:00000000425e1955 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9896 [ 24.149106] memcg:ffff88800e6b0001 [ 24.149551] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.150268] page_type: 0xffffffff() [ 24.150731] raw: 0100000000000200 ffff8880087a0c80 ffffea0000596000 dead000000000005 [ 24.151657] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e6b0001 [ 24.152572] page dumped because: kasan: bad access detected [ 24.153251] [ 24.153473] Memory state around the buggy address: [ 24.154060] ffff888009896680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.154923] ffff888009896700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 24.155799] >ffff888009896780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 24.156658] ^ [ 24.157169] ffff888009896800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 24.158040] ffff888009896880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 24.158903] ================================================================== [ 24.159984] Disabling lock debugging due to kernel taint [ 26.253884] BUG: Bad rss-counter state mm:0000000032432cc9 type:MM_FILEPAGES val:33 [ 26.254630] BUG: Bad rss-counter state mm:0000000032432cc9 type:MM_ANONPAGES val:22 [ 26.730331] BUG: Bad rss-counter state mm:000000000af17c52 type:MM_FILEPAGES val:33 [ 26.731341] BUG: Bad rss-counter state mm:000000000af17c52 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:63102' (ECDSA) to the list of known hosts. 2023/06/20 19:29:10 fuzzer started 2023/06/20 19:29:10 dialing manager at localhost:36067 2023/06/20 19:29:10 checking machine... 2023/06/20 19:29:10 checking revisions... [ 27.327709] kmemleak: Automatic memory scanning thread ended 2023/06/20 19:29:10 testing simple program... [ 27.374452] cgroup: Unknown subsys name 'net' [ 27.410452] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:29:09 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffffff86607973 RCX=0000000000000100 RDX=ffffffff8542a6c0 RSI=ffffffff81007b50 RDI=ffffffff86607973 RBP=ffffffff86607973 RSP=ffff88806ce09a20 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=00000000000b54e7 R12=ffff88806ce09b60 R13=0000000000000000 R14=ffffffff8542a6c0 R15=ffff88800e19eb30 RIP=ffffffff81007b50 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=00007ffc08612298 CR3=0000000005482000 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=00007faa9f983510000055ca81018790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffd40000d2509 RBX=ffffea0000692840 RCX=0000000000000000 RDX=ffff88800e2951c0 RSI=ffffffff8170babd RDI=ffff88800ea07d10 RBP=ffffea00006938c8 RSP=ffff88800ea07948 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000000 R12=000000001a4a1025 R13=000055a9e1a94000 R14=ffff88801ab2e498 R15=dffffc0000000000 RIP=ffffffff8170bad9 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 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=00007f9f0b3e7328 CR3=0000000009e90000 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