syzkaller login: [ 32.617962] BUG: Bad rss-counter state mm:000000002d149481 type:MM_FILEPAGES val:33 [ 32.618993] BUG: Bad rss-counter state mm:000000002d149481 type:MM_ANONPAGES val:22 [ 32.793742] ================================================================== [ 32.794798] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.795906] Read of size 8 at addr ffff88800eb91b38 by task sshd/220 [ 32.796998] [ 32.797264] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.798294] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.799340] Call Trace: [ 32.799659] [ 32.799941] dump_stack_lvl+0x91/0xf0 [ 32.800427] print_report+0xcc/0x620 [ 32.800915] ? __virt_addr_valid+0x102/0x340 [ 32.801476] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.802114] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.802744] kasan_report+0xbe/0xf0 [ 32.803247] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.803898] vma_interval_tree_remove+0xc75/0xec0 [ 32.804533] vma_prepare+0xc54/0x11a0 [ 32.805021] __split_vma+0x5af/0x950 [ 32.805498] ? __pfx___split_vma+0x10/0x10 [ 32.806030] ? find_held_lock+0x2c/0x110 [ 32.806547] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.807135] ? lock_is_held_type+0x9f/0x120 [ 32.807679] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.808291] ? mtree_range_walk+0x632/0x900 [ 32.808866] ? mas_walk+0x5c7/0x7c0 [ 32.809350] do_vmi_munmap+0x1f1/0x2b0 [ 32.809863] mmap_region+0x1f9/0x2660 [ 32.810373] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.810883] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.811604] ? __pfx_lock_acquire+0x10/0x10 [ 32.812145] ? __pfx_mmap_region+0x10/0x10 [ 32.812683] ? security_mmap_addr+0x7d/0xa0 [ 32.813225] ? get_unmapped_area+0x1f5/0x3f0 [ 32.813783] do_mmap+0x854/0xf00 [ 32.814255] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.814786] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.815351] ksys_mmap_pgoff+0x3af/0x500 [ 32.815890] do_syscall_64+0x3f/0x90 [ 32.816389] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.817086] RIP: 0033:0x7f5f9fb31d82 [ 32.817558] 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 [ 32.819808] RSP: 002b:00007fff98432a38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.820754] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5f9fb31d82 [ 32.821608] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5f9ef6b000 [ 32.822462] RBP: 00007f5f9ef6b000 R08: 0000000000000009 R09: 0000000000001000 [ 32.823320] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558984b52d90 [ 32.824209] R13: 00007fff98432a50 R14: 00007fff98432a80 R15: 00007fff98432de0 [ 32.825113] [ 32.825415] [ 32.825643] Allocated by task 213: [ 32.826074] kasan_save_stack+0x22/0x50 [ 32.826582] kasan_set_track+0x25/0x30 [ 32.827080] __kasan_slab_alloc+0x59/0x70 [ 32.827608] kmem_cache_alloc+0x16b/0x370 [ 32.828126] vm_area_dup+0x20/0x160 [ 32.828618] __split_vma+0x170/0x950 [ 32.829107] split_vma+0xc6/0x110 [ 32.829562] mprotect_fixup+0x8d2/0xb30 [ 32.830073] do_mprotect_pkey+0x87e/0xd40 [ 32.830595] __x64_sys_mprotect+0x78/0xc0 [ 32.831124] do_syscall_64+0x3f/0x90 [ 32.831601] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.832260] [ 32.832483] Freed by task 213: [ 32.832902] kasan_save_stack+0x22/0x50 [ 32.833417] kasan_set_track+0x25/0x30 [ 32.833927] kasan_save_free_info+0x2b/0x50 [ 32.834468] __kasan_slab_free+0x10a/0x190 [ 32.834994] kmem_cache_free+0x10d/0x4d0 [ 32.835501] rcu_core+0x8c8/0x2860 [ 32.835943] __do_softirq+0x1b7/0x7d4 [ 32.836416] [ 32.836641] Last potentially related work creation: [ 32.837221] kasan_save_stack+0x22/0x50 [ 32.837721] __kasan_record_aux_stack+0x8e/0xa0 [ 32.838381] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.839057] remove_vma+0x139/0x170 [ 32.839538] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.840141] do_vmi_munmap+0x1f1/0x2b0 [ 32.840652] __vm_munmap+0x138/0x3a0 [ 32.841140] __x64_sys_munmap+0x59/0x80 [ 32.841647] do_syscall_64+0x3f/0x90 [ 32.842125] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.842775] [ 32.843000] Second to last potentially related work creation: [ 32.843686] kasan_save_stack+0x22/0x50 [ 32.844200] __kasan_record_aux_stack+0x8e/0xa0 [ 32.844792] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.845451] remove_vma+0x139/0x170 [ 32.845915] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.846477] do_vmi_munmap+0x1f1/0x2b0 [ 32.846966] mmap_region+0x1f9/0x2660 [ 32.847452] do_mmap+0x854/0xf00 [ 32.847891] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.848387] ksys_mmap_pgoff+0x3af/0x500 [ 32.848911] do_syscall_64+0x3f/0x90 [ 32.849393] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.850044] [ 32.850263] The buggy address belongs to the object at ffff88800eb91ae0 [ 32.850263] which belongs to the cache vm_area_struct of size 168 [ 32.851741] The buggy address is located 88 bytes inside of [ 32.851741] freed 168-byte region [ffff88800eb91ae0, ffff88800eb91b88) [ 32.853164] [ 32.853381] The buggy address belongs to the physical page: [ 32.854048] page:00000000b3b1d714 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeb91 [ 32.855142] memcg:ffff88800e7af801 [ 32.855578] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 32.856282] page_type: 0xffffffff() [ 32.856765] raw: 0100000000000200 ffff88800879fc80 ffffea00003ae540 0000000000000005 [ 32.857708] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e7af801 [ 32.858618] page dumped because: kasan: bad access detected [ 32.859293] [ 32.859511] Memory state around the buggy address: [ 32.860099] ffff88800eb91a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.860971] ffff88800eb91a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 32.861828] >ffff88800eb91b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.862713] ^ [ 32.863341] ffff88800eb91b80: fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 [ 32.864216] ffff88800eb91c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 32.865096] ================================================================== [ 32.866032] Disabling lock debugging due to kernel taint [ 35.094449] BUG: Bad rss-counter state mm:00000000f6615a66 type:MM_FILEPAGES val:33 [ 35.095458] BUG: Bad rss-counter state mm:00000000f6615a66 type:MM_ANONPAGES val:22 [ 35.588428] BUG: Bad rss-counter state mm:00000000f6d21df8 type:MM_FILEPAGES val:33 [ 35.589686] BUG: Bad rss-counter state mm:00000000f6d21df8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:36713' (ECDSA) to the list of known hosts. 2023/06/19 15:18:16 fuzzer started 2023/06/19 15:18:17 dialing manager at localhost:44161 2023/06/19 15:18:17 checking machine... 2023/06/19 15:18:17 checking revisions... [ 36.303387] kmemleak: Automatic memory scanning thread ended 2023/06/19 15:18:17 testing simple program... [ 36.358449] cgroup: Unknown subsys name 'net' [ 36.402147] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:18:15 Registers: info registers vcpu 0 RAX=0000000000000002 RBX=ffffffff813ad420 RCX=ffffffff86137501 RDX=ffff88806ce09e00 RSI=0000000000000000 RDI=ffff88806ce09a98 RBP=ffff88806ce09b30 RSP=ffff88806ce09a90 R8 =ffffffff86137542 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=0000000000020d8a R12=ffff88806ce09b60 R13=0000000000000000 R14=ffffffff8542a6c0 R15=ffff88800f408540 RIP=ffffffff81130340 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 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=000055f50fb74fe0 CR3=000000000faea000 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=2036313a38313a3531203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036313a38313a3531203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=00000000000000a4 RCX=ffffffff8184ced7 RDX=1ffffd40000c1dc0 RSI=0000000000000008 RDI=ffffea000060ee00 RBP=ffff8880183be0a4 RSP=ffff88801c9df878 R8 =0000000000000000 R9 =fffff940000c1dc0 R10=ffffea000060ee07 R11=0000000000000000 R12=ffff8880183be000 R13=0000000000000001 R14=0100000000010200 R15=ffffea000060ee00 RIP=ffffffff8184cef5 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 00007f3d785a4900 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=00007f3d78b5b618 CR3=00000000197f8000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000