syzkaller login: [ 30.587239] BUG: Bad rss-counter state mm:000000008a9a86b5 type:MM_FILEPAGES val:33 [ 30.588653] BUG: Bad rss-counter state mm:000000008a9a86b5 type:MM_ANONPAGES val:22 [ 30.729980] ================================================================== [ 30.730892] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.731832] Read of size 8 at addr ffff88800eadf5c8 by task sshd/219 [ 30.732707] [ 30.732931] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.733805] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.734819] Call Trace: [ 30.735138] [ 30.735427] dump_stack_lvl+0x91/0xf0 [ 30.735918] print_report+0xcc/0x620 [ 30.736412] ? __virt_addr_valid+0x102/0x340 [ 30.736987] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.737605] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.738223] kasan_report+0xbe/0xf0 [ 30.738713] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.739349] vma_interval_tree_remove+0xc75/0xec0 [ 30.739950] vma_prepare+0xc54/0x11a0 [ 30.740436] __split_vma+0x5af/0x950 [ 30.740951] ? __pfx___split_vma+0x10/0x10 [ 30.741489] ? find_held_lock+0x2c/0x110 [ 30.742008] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.742573] ? lock_is_held_type+0x9f/0x120 [ 30.743127] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.743741] ? mtree_range_walk+0x632/0x900 [ 30.744290] ? mas_walk+0x5c7/0x7c0 [ 30.744784] do_vmi_munmap+0x1f1/0x2b0 [ 30.745294] mmap_region+0x1f9/0x2660 [ 30.745783] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.746292] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.747015] ? __pfx_lock_acquire+0x10/0x10 [ 30.747551] ? __pfx_mmap_region+0x10/0x10 [ 30.748081] ? security_mmap_addr+0x7d/0xa0 [ 30.748639] ? get_unmapped_area+0x1f5/0x3f0 [ 30.749183] do_mmap+0x854/0xf00 [ 30.749616] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.750107] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.750661] ksys_mmap_pgoff+0x3af/0x500 [ 30.751165] do_syscall_64+0x3f/0x90 [ 30.751642] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.752283] RIP: 0033:0x7f0d2bc27d82 [ 30.752744] 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 [ 30.754852] RSP: 002b:00007ffc8f56b768 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.755753] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0d2bc27d82 [ 30.756601] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0d2b061000 [ 30.757450] RBP: 00007f0d2b061000 R08: 0000000000000009 R09: 0000000000001000 [ 30.758290] R10: 0000000000000812 R11: 0000000000000206 R12: 000055aa8db96d90 [ 30.759134] R13: 00007ffc8f56b780 R14: 00007ffc8f56b7b0 R15: 00007ffc8f56bb10 [ 30.759987] [ 30.760277] [ 30.760491] Allocated by task 212: [ 30.760934] kasan_save_stack+0x22/0x50 [ 30.761437] kasan_set_track+0x25/0x30 [ 30.761933] __kasan_slab_alloc+0x59/0x70 [ 30.762453] kmem_cache_alloc+0x16b/0x370 [ 30.762964] vm_area_dup+0x20/0x160 [ 30.763420] __split_vma+0x170/0x950 [ 30.763881] split_vma+0xc6/0x110 [ 30.764324] mprotect_fixup+0x8d2/0xb30 [ 30.764835] do_mprotect_pkey+0x87e/0xd40 [ 30.765347] __x64_sys_mprotect+0x78/0xc0 [ 30.765862] do_syscall_64+0x3f/0x90 [ 30.766337] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.766974] [ 30.767191] Freed by task 212: [ 30.767583] kasan_save_stack+0x22/0x50 [ 30.768082] kasan_set_track+0x25/0x30 [ 30.768584] kasan_save_free_info+0x2b/0x50 [ 30.769111] __kasan_slab_free+0x10a/0x190 [ 30.769638] kmem_cache_free+0x10d/0x4d0 [ 30.770152] rcu_core+0x8c8/0x2860 [ 30.770596] __do_softirq+0x1b7/0x7d4 [ 30.771072] [ 30.771285] Last potentially related work creation: [ 30.771871] kasan_save_stack+0x22/0x50 [ 30.772369] __kasan_record_aux_stack+0x8e/0xa0 [ 30.772955] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.773593] remove_vma+0x139/0x170 [ 30.774042] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.774596] do_vmi_munmap+0x1f1/0x2b0 [ 30.775084] __vm_munmap+0x138/0x3a0 [ 30.775548] __x64_sys_munmap+0x59/0x80 [ 30.776037] do_syscall_64+0x3f/0x90 [ 30.776516] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.777160] [ 30.777374] The buggy address belongs to the object at ffff88800eadf570 [ 30.777374] which belongs to the cache vm_area_struct of size 168 [ 30.778837] The buggy address is located 88 bytes inside of [ 30.778837] freed 168-byte region [ffff88800eadf570, ffff88800eadf618) [ 30.780233] [ 30.780448] The buggy address belongs to the physical page: [ 30.781118] page:0000000061051245 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeadf [ 30.782198] memcg:ffff88800f1f9701 [ 30.782627] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.783269] page_type: 0xffffffff() [ 30.783715] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.784652] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f1f9701 [ 30.785559] page dumped because: kasan: bad access detected [ 30.786225] [ 30.786439] Memory state around the buggy address: [ 30.787010] ffff88800eadf480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.787862] ffff88800eadf500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.788716] >ffff88800eadf580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.789554] ^ [ 30.790220] ffff88800eadf600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.791073] ffff88800eadf680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.791921] ================================================================== [ 30.792892] Disabling lock debugging due to kernel taint [ 33.597853] BUG: Bad rss-counter state mm:000000000e3d386a type:MM_FILEPAGES val:33 [ 33.599002] BUG: Bad rss-counter state mm:000000000e3d386a type:MM_ANONPAGES val:22 [ 33.963387] BUG: Bad rss-counter state mm:0000000084d1cb38 type:MM_FILEPAGES val:33 [ 33.964380] BUG: Bad rss-counter state mm:0000000084d1cb38 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25725' (ECDSA) to the list of known hosts. 2023/06/21 03:29:31 fuzzer started 2023/06/21 03:29:32 dialing manager at localhost:36067 2023/06/21 03:29:32 checking machine... 2023/06/21 03:29:32 checking revisions... [ 34.684585] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:29:32 testing simple program... [ 34.744526] cgroup: Unknown subsys name 'net' [ 34.812916] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:29:31 Registers: info registers vcpu 0 RAX=1ffffffff0bbfc04 RBX=ffffffff85dfe020 RCX=ffffffff8180c6a1 RDX=0000000000000000 RSI=ffffffff86138e62 RDI=ffffffff85dfe000 RBP=ffffffff85dfe01c RSP=ffff888008d9f8c0 R8 =ffffffff86138e62 R9 =ffff888008d9f9b8 R10=0000000000038001 R11=0000000000020d8f R12=ffffffff85dfe024 R13=ffffffff85dfe000 R14=ffffffff85dfe018 R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000212 [----A--] 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=00007fac5a31ac40 CR3=0000000015a06000 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=2031333a39323a3330203132206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031333a39323a3330203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806c400000 RBX=0000000056d36368 RCX=ffff88806c5b1b40 RDX=0000000000000011 RSI=0000000000000001 RDI=000000007e2efbf0 RBP=ffff888006a69e00 RSP=ffff888016797940 R8 =00000000b65aa445 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000000 R13=0000000000000000 R14=ffff8880167979a8 R15=0000000000000011 RIP=ffffffff822704d3 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 00007ff58d9f4900 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=00007ff58dfab618 CR3=000000000e6aa000 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=563412feff00545000000000000080fe 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