[ 24.346029] BUG: Bad rss-counter state mm:000000005e106c23 type:MM_FILEPAGES val:33 [ 24.347378] BUG: Bad rss-counter state mm:000000005e106c23 type:MM_ANONPAGES val:22 [ 24.508561] ================================================================== [ 24.509469] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.510408] Read of size 8 at addr ffff88800c5aad08 by task sshd/220 [ 24.511171] [ 24.511455] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.512344] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.513311] Call Trace: [ 24.513658] [ 24.513953] dump_stack_lvl+0x91/0xf0 [ 24.514439] print_report+0xcc/0x620 [ 24.514926] ? __virt_addr_valid+0x102/0x340 [ 24.515480] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.516087] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.516692] kasan_report+0xbe/0xf0 [ 24.517173] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.517799] vma_interval_tree_remove+0xc75/0xec0 [ 24.518390] vma_prepare+0xc54/0x11a0 [ 24.518863] __split_vma+0x5af/0x950 [ 24.519338] ? __pfx___split_vma+0x10/0x10 [ 24.519858] ? find_held_lock+0x2c/0x110 [ 24.520374] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.520935] ? lock_is_held_type+0x9f/0x120 [ 24.521474] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.522109] ? mtree_range_walk+0x632/0x900 [ 24.522654] ? mas_walk+0x5c7/0x7c0 [ 24.523128] do_vmi_munmap+0x1f1/0x2b0 [ 24.523614] mmap_region+0x1f9/0x2660 [ 24.524090] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.524594] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.525303] ? __pfx_lock_acquire+0x10/0x10 [ 24.525835] ? __pfx_mmap_region+0x10/0x10 [ 24.526361] ? security_mmap_addr+0x7d/0xa0 [ 24.526884] ? get_unmapped_area+0x1f5/0x3f0 [ 24.527430] do_mmap+0x854/0xf00 [ 24.527865] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.528349] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.528901] ksys_mmap_pgoff+0x3af/0x500 [ 24.529401] do_syscall_64+0x3f/0x90 [ 24.529881] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.530526] RIP: 0033:0x7f5e0dbd6d82 [ 24.530987] 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 [ 24.533074] RSP: 002b:00007ffee7f60f38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.533997] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5e0dbd6d82 [ 24.534837] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5e0d010000 [ 24.535686] RBP: 00007f5e0d010000 R08: 0000000000000009 R09: 0000000000001000 [ 24.536534] R10: 0000000000000812 R11: 0000000000000206 R12: 00005569fc082ec0 [ 24.537379] R13: 00007ffee7f60f50 R14: 00007ffee7f60f80 R15: 00007ffee7f612e0 [ 24.538245] [ 24.538533] [ 24.538748] Allocated by task 213: [ 24.539173] kasan_save_stack+0x22/0x50 [ 24.539673] kasan_set_track+0x25/0x30 [ 24.540161] __kasan_slab_alloc+0x59/0x70 [ 24.540678] kmem_cache_alloc+0x16b/0x370 [ 24.541188] vm_area_dup+0x20/0x160 [ 24.541634] __split_vma+0x170/0x950 [ 24.542110] split_vma+0xc6/0x110 [ 24.542560] mprotect_fixup+0x8d2/0xb30 [ 24.543062] do_mprotect_pkey+0x87e/0xd40 [ 24.543581] __x64_sys_mprotect+0x78/0xc0 [ 24.544094] do_syscall_64+0x3f/0x90 [ 24.544573] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.545214] [ 24.545433] Freed by task 213: [ 24.545839] kasan_save_stack+0x22/0x50 [ 24.546338] kasan_set_track+0x25/0x30 [ 24.546832] kasan_save_free_info+0x2b/0x50 [ 24.547354] __kasan_slab_free+0x10a/0x190 [ 24.547880] kmem_cache_free+0x10d/0x4d0 [ 24.548393] rcu_core+0x8c8/0x2860 [ 24.548828] __do_softirq+0x1b7/0x7d4 [ 24.549300] [ 24.549512] Last potentially related work creation: [ 24.550098] kasan_save_stack+0x22/0x50 [ 24.550593] __kasan_record_aux_stack+0x8e/0xa0 [ 24.551161] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.551799] remove_vma+0x139/0x170 [ 24.552246] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.552793] do_vmi_munmap+0x1f1/0x2b0 [ 24.553277] __vm_munmap+0x138/0x3a0 [ 24.553743] __x64_sys_munmap+0x59/0x80 [ 24.554267] do_syscall_64+0x3f/0x90 [ 24.554735] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.555375] [ 24.555587] The buggy address belongs to the object at ffff88800c5aacb0 [ 24.555587] which belongs to the cache vm_area_struct of size 168 [ 24.557030] The buggy address is located 88 bytes inside of [ 24.557030] freed 168-byte region [ffff88800c5aacb0, ffff88800c5aad58) [ 24.558422] [ 24.558635] The buggy address belongs to the physical page: [ 24.559284] page:000000007cf077e7 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800c5aad98 pfn:0xc5aa [ 24.560494] memcg:ffff888015c45d01 [ 24.560914] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.561556] page_type: 0xffffffff() [ 24.562008] raw: 0100000000000200 ffff8880087a0c80 ffffea000059e6c0 dead00000000000c [ 24.562919] raw: ffff88800c5aad98 0000000080110010 00000001ffffffff ffff888015c45d01 [ 24.563824] page dumped because: kasan: bad access detected [ 24.564478] [ 24.564690] Memory state around the buggy address: [ 24.565270] ffff88800c5aac00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 24.566140] ffff88800c5aac80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 24.566987] >ffff88800c5aad00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 24.567843] ^ [ 24.568283] ffff88800c5aad80: fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.569151] ffff88800c5aae00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 24.570000] ================================================================== [ 24.571372] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.510222] BUG: Bad rss-counter state mm:00000000117baf09 type:MM_FILEPAGES val:33 [ 26.511238] BUG: Bad rss-counter state mm:00000000117baf09 type:MM_ANONPAGES val:22 [ 27.046903] BUG: Bad rss-counter state mm:000000001f90728c type:MM_FILEPAGES val:33 [ 27.047883] BUG: Bad rss-counter state mm:000000001f90728c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:2399' (ECDSA) to the list of known hosts. 2023/06/21 00:55:00 fuzzer started 2023/06/21 00:55:01 dialing manager at localhost:36067 2023/06/21 00:55:01 checking machine... 2023/06/21 00:55:01 checking revisions... [ 27.675027] kmemleak: Automatic memory scanning thread ended 2023/06/21 00:55:01 testing simple program... [ 27.721123] cgroup: Unknown subsys name 'net' [ 27.783625] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:55:00 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=ffff88806ce35000 RCX=ffffffff815342db RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffffff81810711 RSP=ffff88806ce09db8 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000200 R13=0000000000000001 R14=ffffffff818d9c06 R15=ffff888015fafd00 RIP=ffffffff8135b979 RFL=00000002 [-------] 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 00007f60c06d6900 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=00007f60c0c8b650 CR3=000000001742a000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=1ffff11002bd3f33 RCX=0000000000000000 RDX=ffff888015d41b40 RSI=ffffffff81b3de10 RDI=0000000000000001 RBP=ffff8880192c82b0 RSP=ffff888015e9f958 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=00000000000b6a61 R12=ffff88801ba9a318 R13=0000000000000001 R14=0000000000000001 R15=ffff88801009a000 RIP=ffffffff8135b935 RFL=00000293 [--S-A-C] 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 00007fcd1f21e700 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=00007fffadc7a3b8 CR3=000000000c9b4000 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=2030303a35353a3030203132206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732030303a35353a3030203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000