syzkaller login: [ 31.625183] BUG: Bad rss-counter state mm:000000000c5ae2d4 type:MM_FILEPAGES val:33 [ 31.626460] BUG: Bad rss-counter state mm:000000000c5ae2d4 type:MM_ANONPAGES val:22 [ 31.803886] ================================================================== [ 31.804877] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.805886] Read of size 8 at addr ffff88800e7ada50 by task sshd/219 [ 31.807061] [ 31.807313] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.808267] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.809311] Call Trace: [ 31.809650] [ 31.809972] dump_stack_lvl+0x91/0xf0 [ 31.810503] print_report+0xcc/0x620 [ 31.811036] ? __virt_addr_valid+0x102/0x340 [ 31.811625] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.812309] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.813010] kasan_report+0xbe/0xf0 [ 31.813539] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.814245] vma_interval_tree_remove+0xc75/0xec0 [ 31.814922] vma_prepare+0xc54/0x11a0 [ 31.815452] __split_vma+0x5af/0x950 [ 31.815998] ? __pfx___split_vma+0x10/0x10 [ 31.816615] ? find_held_lock+0x2c/0x110 [ 31.817213] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.817853] ? lock_is_held_type+0x9f/0x120 [ 31.818449] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.819137] ? mtree_range_walk+0x632/0x900 [ 31.819747] ? mas_walk+0x5c7/0x7c0 [ 31.820298] do_vmi_munmap+0x1f1/0x2b0 [ 31.820860] mmap_region+0x1f9/0x2660 [ 31.821399] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.821978] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.822765] ? __pfx_lock_acquire+0x10/0x10 [ 31.823374] ? __pfx_mmap_region+0x10/0x10 [ 31.823982] ? security_mmap_addr+0x7d/0xa0 [ 31.824588] ? get_unmapped_area+0x1f5/0x3f0 [ 31.825220] do_mmap+0x854/0xf00 [ 31.825704] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.826270] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.826902] ksys_mmap_pgoff+0x3af/0x500 [ 31.827460] do_syscall_64+0x3f/0x90 [ 31.828002] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.828738] RIP: 0033:0x7fe1cc4c6d82 [ 31.829260] 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 [ 31.831652] RSP: 002b:00007fff38d5cf38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.832696] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe1cc4c6d82 [ 31.833657] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe1cb900000 [ 31.834625] RBP: 00007fe1cb900000 R08: 0000000000000009 R09: 0000000000001000 [ 31.835582] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559a75ce4ec0 [ 31.836557] R13: 00007fff38d5cf50 R14: 00007fff38d5cf80 R15: 00007fff38d5d2e0 [ 31.837520] [ 31.837856] [ 31.838100] Allocated by task 212: [ 31.838580] kasan_save_stack+0x22/0x50 [ 31.839151] kasan_set_track+0x25/0x30 [ 31.839703] __kasan_slab_alloc+0x59/0x70 [ 31.840317] kmem_cache_alloc+0x16b/0x370 [ 31.840909] vm_area_dup+0x20/0x160 [ 31.841413] __split_vma+0x170/0x950 [ 31.841948] split_vma+0xc6/0x110 [ 31.842435] mprotect_fixup+0x8d2/0xb30 [ 31.843008] do_mprotect_pkey+0x87e/0xd40 [ 31.843592] __x64_sys_mprotect+0x78/0xc0 [ 31.844186] do_syscall_64+0x3f/0x90 [ 31.844710] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.845424] [ 31.845667] Freed by task 212: [ 31.846121] kasan_save_stack+0x22/0x50 [ 31.846676] kasan_set_track+0x25/0x30 [ 31.847456] kasan_save_free_info+0x2b/0x50 [ 31.848084] __kasan_slab_free+0x10a/0x190 [ 31.848679] kmem_cache_free+0x10d/0x4d0 [ 31.849255] rcu_core+0x8c8/0x2860 [ 31.849754] __do_softirq+0x1b7/0x7d4 [ 31.850300] [ 31.850540] Last potentially related work creation: [ 31.851204] kasan_save_stack+0x22/0x50 [ 31.851757] __kasan_record_aux_stack+0x8e/0xa0 [ 31.852413] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.853137] remove_vma+0x139/0x170 [ 31.853639] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.854272] do_vmi_munmap+0x1f1/0x2b0 [ 31.854817] __vm_munmap+0x138/0x3a0 [ 31.855348] __x64_sys_munmap+0x59/0x80 [ 31.855913] do_syscall_64+0x3f/0x90 [ 31.856466] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.857184] [ 31.857425] Second to last potentially related work creation: [ 31.858201] kasan_save_stack+0x22/0x50 [ 31.858758] __kasan_record_aux_stack+0x8e/0xa0 [ 31.859399] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.860137] remove_vma+0x139/0x170 [ 31.860637] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.861264] do_vmi_munmap+0x1f1/0x2b0 [ 31.861814] mmap_region+0x1f9/0x2660 [ 31.862350] do_mmap+0x854/0xf00 [ 31.862836] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.863398] ksys_mmap_pgoff+0x3af/0x500 [ 31.863973] do_syscall_64+0x3f/0x90 [ 31.864520] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.865246] [ 31.865488] The buggy address belongs to the object at ffff88800e7ad9f8 [ 31.865488] which belongs to the cache vm_area_struct of size 168 [ 31.867144] The buggy address is located 88 bytes inside of [ 31.867144] freed 168-byte region [ffff88800e7ad9f8, ffff88800e7adaa0) [ 31.868732] [ 31.868986] The buggy address belongs to the physical page: [ 31.869724] page:000000007c70b4ac refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe7ad [ 31.870938] memcg:ffff88800d1d5301 [ 31.871415] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.872196] page_type: 0xffffffff() [ 31.872696] raw: 0100000000000200 ffff88800879fc80 ffffea000023bd80 dead000000000006 [ 31.873729] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d1d5301 [ 31.874750] page dumped because: kasan: bad access detected [ 31.875502] [ 31.875743] Memory state around the buggy address: [ 31.876412] ffff88800e7ad900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.877370] ffff88800e7ad980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 31.878338] >ffff88800e7ada00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.879296] ^ [ 31.880110] ffff88800e7ada80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 31.881078] ffff88800e7adb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.882039] ================================================================== [ 31.883079] Disabling lock debugging due to kernel taint [ 34.022527] BUG: Bad rss-counter state mm:000000009f355a78 type:MM_FILEPAGES val:33 [ 34.023072] BUG: Bad rss-counter state mm:000000009f355a78 type:MM_ANONPAGES val:22 [ 34.604414] BUG: Bad rss-counter state mm:00000000e893da04 type:MM_FILEPAGES val:33 [ 34.605625] BUG: Bad rss-counter state mm:00000000e893da04 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:1422' (ECDSA) to the list of known hosts. 2023/06/19 18:04:53 fuzzer started 2023/06/19 18:04:53 dialing manager at localhost:44161 2023/06/19 18:04:53 checking machine... 2023/06/19 18:04:53 checking revisions... [ 35.256643] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:04:54 testing simple program... [ 35.308443] cgroup: Unknown subsys name 'net' [ 35.380255] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:04:53 Registers: info registers vcpu 0 RAX=ffff88801473ff48 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff88801473ff01 RSI=ffff88801473ff18 RDI=ffff88801473ff18 RBP=ffff88801473f520 RSP=ffff88801473f458 R8 =0000000000000001 R9 =ffff88801473f508 R10=0000000000038001 R11=000000000008ab99 R12=ffff88801473f528 R13=ffff88801473f510 R14=ffff88801473ff18 R15=ffff88801473f4c8 RIP=ffffffff81131236 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 00007f061d7ae900 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=00007f061cccf000 CR3=000000000c942000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=dc1f2614812f14b400000000000ae988 XMM05=a625c08e86d363360000000000135f48 XMM06=9bb2189f801a77a20000000000134ce8 XMM07=fb795ef6d65770560000000000123f58 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff888009a5f280 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=0000000000000000 RSP=ffff888018f074f8 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=000009b2000009b2 R12=0000000000000000 R13=0000000000000050 R14=dffffc0000000000 R15=ffffffff87f94640 RIP=ffffffff8450bdc0 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 00007f4ed85db900 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=00007ffdd8dd8000 CR3=0000000019d0c000 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