syzkaller login: [ 30.656126] BUG: Bad rss-counter state mm:000000007bd0d5a3 type:MM_FILEPAGES val:33 [ 30.657370] BUG: Bad rss-counter state mm:000000007bd0d5a3 type:MM_ANONPAGES val:22 [ 30.695862] ================================================================== [ 30.696893] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.698015] Read of size 8 at addr ffff88800f7e5058 by task sshd/219 [ 30.698974] [ 30.699201] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.700216] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.701382] Call Trace: [ 30.701770] [ 30.702085] dump_stack_lvl+0x91/0xf0 [ 30.702643] print_report+0xcc/0x620 [ 30.703203] ? __virt_addr_valid+0x102/0x340 [ 30.703869] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.704605] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.705319] kasan_report+0xbe/0xf0 [ 30.705856] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.706551] vma_interval_tree_remove+0xc75/0xec0 [ 30.707235] vma_prepare+0xc54/0x11a0 [ 30.707792] __split_vma+0x5af/0x950 [ 30.708356] ? __pfx___split_vma+0x10/0x10 [ 30.709008] ? find_held_lock+0x2c/0x110 [ 30.709632] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.710297] ? lock_is_held_type+0x9f/0x120 [ 30.710838] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.711467] ? mtree_range_walk+0x632/0x900 [ 30.712166] ? mas_walk+0x5c7/0x7c0 [ 30.712641] do_vmi_munmap+0x1f1/0x2b0 [ 30.713139] mmap_region+0x1f9/0x2660 [ 30.713625] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.714146] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.714866] ? __pfx_lock_acquire+0x10/0x10 [ 30.715406] ? __pfx_mmap_region+0x10/0x10 [ 30.715946] ? security_mmap_addr+0x7d/0xa0 [ 30.716488] ? get_unmapped_area+0x1f5/0x3f0 [ 30.717045] do_mmap+0x854/0xf00 [ 30.717492] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.717994] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.718563] ksys_mmap_pgoff+0x3af/0x500 [ 30.719081] do_syscall_64+0x3f/0x90 [ 30.719590] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.720253] RIP: 0033:0x7feb4129cd82 [ 30.720712] 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 [ 30.722852] RSP: 002b:00007ffef4b69c48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.723769] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007feb4129cd82 [ 30.724621] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007feb406d6000 [ 30.725477] RBP: 00007feb406d6000 R08: 0000000000000009 R09: 0000000000001000 [ 30.726324] R10: 0000000000000812 R11: 0000000000000206 R12: 000056291a1dbf60 [ 30.727175] R13: 00007ffef4b69c60 R14: 00007ffef4b69c90 R15: 00007ffef4b69ff0 [ 30.728038] [ 30.728331] [ 30.728552] Allocated by task 212: [ 30.728985] kasan_save_stack+0x22/0x50 [ 30.729492] kasan_set_track+0x25/0x30 [ 30.729999] __kasan_slab_alloc+0x59/0x70 [ 30.730525] kmem_cache_alloc+0x16b/0x370 [ 30.731050] vm_area_dup+0x20/0x160 [ 30.731528] __split_vma+0x170/0x950 [ 30.731995] split_vma+0xc6/0x110 [ 30.732437] mprotect_fixup+0x8d2/0xb30 [ 30.732944] do_mprotect_pkey+0x87e/0xd40 [ 30.733467] __x64_sys_mprotect+0x78/0xc0 [ 30.733990] do_syscall_64+0x3f/0x90 [ 30.734477] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.735114] [ 30.735332] Freed by task 212: [ 30.735737] kasan_save_stack+0x22/0x50 [ 30.736247] kasan_set_track+0x25/0x30 [ 30.736744] kasan_save_free_info+0x2b/0x50 [ 30.737283] __kasan_slab_free+0x10a/0x190 [ 30.737817] kmem_cache_free+0x10d/0x4d0 [ 30.738326] rcu_core+0x8c8/0x2860 [ 30.738778] __do_softirq+0x1b7/0x7d4 [ 30.739348] [ 30.739585] Last potentially related work creation: [ 30.740178] kasan_save_stack+0x22/0x50 [ 30.740689] __kasan_record_aux_stack+0x8e/0xa0 [ 30.741267] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.741912] remove_vma+0x139/0x170 [ 30.742368] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.742927] do_vmi_munmap+0x1f1/0x2b0 [ 30.743417] __vm_munmap+0x138/0x3a0 [ 30.743903] __x64_sys_munmap+0x59/0x80 [ 30.744419] do_syscall_64+0x3f/0x90 [ 30.744894] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.745550] [ 30.745767] Second to last potentially related work creation: [ 30.746456] kasan_save_stack+0x22/0x50 [ 30.746971] __kasan_record_aux_stack+0x8e/0xa0 [ 30.747568] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.748224] remove_vma+0x139/0x170 [ 30.748688] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.749254] do_vmi_munmap+0x1f1/0x2b0 [ 30.749754] __vm_munmap+0x138/0x3a0 [ 30.750237] elf_map+0x26f/0x310 [ 30.750682] load_elf_binary+0xd82/0x5030 [ 30.751290] bprm_execve+0x803/0x1940 [ 30.751871] do_execveat_common+0x734/0x8e0 [ 30.752491] __x64_sys_execve+0x93/0xc0 [ 30.753073] do_syscall_64+0x3f/0x90 [ 30.753623] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.754388] [ 30.754643] The buggy address belongs to the object at ffff88800f7e5000 [ 30.754643] which belongs to the cache vm_area_struct of size 168 [ 30.756407] The buggy address is located 88 bytes inside of [ 30.756407] freed 168-byte region [ffff88800f7e5000, ffff88800f7e50a8) [ 30.758074] [ 30.758343] The buggy address belongs to the physical page: [ 30.759128] page:00000000a5d5aae4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf7e5 [ 30.760446] memcg:ffff88800e1c4801 [ 30.760952] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.761775] page_type: 0xffffffff() [ 30.762309] raw: 0100000000000200 ffff88800879fc80 ffffea000067e700 dead000000000005 [ 30.763408] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e1c4801 [ 30.764540] page dumped because: kasan: bad access detected [ 30.765336] [ 30.765601] Memory state around the buggy address: [ 30.766305] ffff88800f7e4f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.767338] ffff88800f7e4f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.768376] >ffff88800f7e5000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.769407] ^ [ 30.770292] ffff88800f7e5080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.771338] ffff88800f7e5100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.772395] ================================================================== [ 30.773632] Disabling lock debugging due to kernel taint [ 32.691946] BUG: Bad rss-counter state mm:000000002d63545b type:MM_FILEPAGES val:33 [ 32.692979] BUG: Bad rss-counter state mm:000000002d63545b type:MM_ANONPAGES val:22 [ 33.165070] BUG: Bad rss-counter state mm:00000000be7f7af1 type:MM_FILEPAGES val:33 [ 33.166061] BUG: Bad rss-counter state mm:00000000be7f7af1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:35138' (ECDSA) to the list of known hosts. 2023/06/20 04:04:19 fuzzer started 2023/06/20 04:04:19 dialing manager at localhost:44161 2023/06/20 04:04:19 checking machine... 2023/06/20 04:04:19 checking revisions... [ 33.832445] kmemleak: Automatic memory scanning thread ended 2023/06/20 04:04:19 testing simple program... [ 33.863309] cgroup: Unknown subsys name 'net' [ 33.907656] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:04:18 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007fff07fa0b98 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=00007f53a0574510000055956e19c790 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=0000511c272724a9 RBX=36cd7d943a8da3e8 RCX=000000000000acf8 RDX=000000000011e248 RSI=0000000000000000 RDI=000055b63136d660 RBP=0000000000000037 RSP=00007fff5e628550 R8 =00007fff5e628600 R9 =00007fff5e628608 R10=00007f6f91f4ba34 R11=000000000052545f R12=00007fff5e6288d0 R13=36cd7d943a8da3e8 R14=000055b63136d660 R15=00007fff5e628600 RIP=00007f6f91eda176 RFL=00000206 [-----P-] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f6f91356900 00000000 00000000 GS =0000 0000000000000000 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=00007f92c50bf650 CR3=000000000d752000 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=ffffffffffffffffffffffffffffffff XMM01=0000000000000000646873733d4d4d4f XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=337b50c7606e8aeb00000000000ae988 XMM05=bf42251bf359589300000000001372d0 XMM06=806171799158d96700000000001360c0 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000