syzkaller login: [ 30.708997] BUG: Bad rss-counter state mm:00000000a13cb665 type:MM_FILEPAGES val:33 [ 30.710440] BUG: Bad rss-counter state mm:00000000a13cb665 type:MM_ANONPAGES val:22 [ 30.854097] ================================================================== [ 30.855000] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.855949] Read of size 8 at addr ffff88800ba1e228 by task sshd/219 [ 30.856728] [ 30.856954] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.857945] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.858939] Call Trace: [ 30.859266] [ 30.859574] dump_stack_lvl+0x91/0xf0 [ 30.860074] print_report+0xcc/0x620 [ 30.860560] ? __virt_addr_valid+0x102/0x340 [ 30.861122] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.861751] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.862374] kasan_report+0xbe/0xf0 [ 30.862848] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.863469] vma_interval_tree_remove+0xc75/0xec0 [ 30.864074] vma_prepare+0xc54/0x11a0 [ 30.864559] __split_vma+0x5af/0x950 [ 30.865030] ? __pfx___split_vma+0x10/0x10 [ 30.865568] ? find_held_lock+0x2c/0x110 [ 30.866084] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.866649] ? lock_is_held_type+0x9f/0x120 [ 30.867185] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.867796] ? mtree_range_walk+0x632/0x900 [ 30.868346] ? mas_walk+0x5c7/0x7c0 [ 30.868825] do_vmi_munmap+0x1f1/0x2b0 [ 30.869334] mmap_region+0x1f9/0x2660 [ 30.869826] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.870344] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.871065] ? __pfx_lock_acquire+0x10/0x10 [ 30.871599] ? __pfx_mmap_region+0x10/0x10 [ 30.872133] ? security_mmap_addr+0x7d/0xa0 [ 30.872673] ? get_unmapped_area+0x1f5/0x3f0 [ 30.873232] do_mmap+0x854/0xf00 [ 30.873672] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.874176] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.874736] ksys_mmap_pgoff+0x3af/0x500 [ 30.875242] do_syscall_64+0x3f/0x90 [ 30.875726] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.876376] RIP: 0033:0x7f16210a5d82 [ 30.876832] 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 [ 30.879031] RSP: 002b:00007ffe47610868 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.879939] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f16210a5d82 [ 30.880789] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f16204df000 [ 30.881648] RBP: 00007f16204df000 R08: 0000000000000009 R09: 0000000000001000 [ 30.882510] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558848abeec0 [ 30.883360] R13: 00007ffe47610880 R14: 00007ffe476108b0 R15: 00007ffe47610c10 [ 30.884213] [ 30.884506] [ 30.884721] Allocated by task 212: [ 30.885157] kasan_save_stack+0x22/0x50 [ 30.885669] kasan_set_track+0x25/0x30 [ 30.886161] __kasan_slab_alloc+0x59/0x70 [ 30.886683] kmem_cache_alloc+0x16b/0x370 [ 30.887205] vm_area_dup+0x20/0x160 [ 30.887665] __split_vma+0x170/0x950 [ 30.888137] split_vma+0xc6/0x110 [ 30.888580] mprotect_fixup+0x8d2/0xb30 [ 30.889081] do_mprotect_pkey+0x87e/0xd40 [ 30.889628] __x64_sys_mprotect+0x78/0xc0 [ 30.890163] do_syscall_64+0x3f/0x90 [ 30.890640] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.891282] [ 30.891500] Freed by task 32: [ 30.891891] kasan_save_stack+0x22/0x50 [ 30.892392] kasan_set_track+0x25/0x30 [ 30.892892] kasan_save_free_info+0x2b/0x50 [ 30.893441] __kasan_slab_free+0x10a/0x190 [ 30.893974] kmem_cache_free+0x10d/0x4d0 [ 30.894482] rcu_core+0x8c8/0x2860 [ 30.894926] __do_softirq+0x1b7/0x7d4 [ 30.895403] [ 30.895618] Last potentially related work creation: [ 30.896202] kasan_save_stack+0x22/0x50 [ 30.896717] __kasan_record_aux_stack+0x8e/0xa0 [ 30.897322] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.897965] remove_vma+0x139/0x170 [ 30.898420] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.898991] do_vmi_munmap+0x1f1/0x2b0 [ 30.899475] __vm_munmap+0x138/0x3a0 [ 30.899949] __x64_sys_munmap+0x59/0x80 [ 30.900453] do_syscall_64+0x3f/0x90 [ 30.900946] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.901596] [ 30.901818] The buggy address belongs to the object at ffff88800ba1e1d0 [ 30.901818] which belongs to the cache vm_area_struct of size 168 [ 30.903296] The buggy address is located 88 bytes inside of [ 30.903296] freed 168-byte region [ffff88800ba1e1d0, ffff88800ba1e278) [ 30.904710] [ 30.904926] The buggy address belongs to the physical page: [ 30.905604] page:00000000f0cbc978 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xba1e [ 30.906690] memcg:ffff888017f2f201 [ 30.907131] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.907775] page_type: 0xffffffff() [ 30.908231] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.909170] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888017f2f201 [ 30.910077] page dumped because: kasan: bad access detected [ 30.910740] [ 30.910955] Memory state around the buggy address: [ 30.911542] ffff88800ba1e100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.912393] ffff88800ba1e180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.913260] >ffff88800ba1e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.914131] ^ [ 30.914692] ffff88800ba1e280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.915546] ffff88800ba1e300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.916393] ================================================================== [ 30.917435] Disabling lock debugging due to kernel taint [ 33.101139] BUG: Bad rss-counter state mm:00000000918a1ab9 type:MM_FILEPAGES val:33 [ 33.102358] BUG: Bad rss-counter state mm:00000000918a1ab9 type:MM_ANONPAGES val:22 [ 33.565532] BUG: Bad rss-counter state mm:000000007b9b638f type:MM_FILEPAGES val:33 [ 33.566685] BUG: Bad rss-counter state mm:000000007b9b638f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:57866' (ECDSA) to the list of known hosts. 2023/06/21 02:18:19 fuzzer started 2023/06/21 02:18:19 dialing manager at localhost:36067 2023/06/21 02:18:19 checking machine... 2023/06/21 02:18:19 checking revisions... [ 34.194014] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:18:19 testing simple program... [ 34.237080] cgroup: Unknown subsys name 'net' [ 34.289446] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:18:19 Registers: info registers vcpu 0 RAX=ffffffff85dfde04 RBX=ffffffff85dfde00 RCX=ffffffff8180b320 RDX=0000000000000000 RSI=ffffffff86138b62 RDI=ffffffff85dfde00 RBP=ffffffff85dfde04 RSP=ffff8880147df490 R8 =ffffffff86138b62 R9 =ffff8880147df588 R10=0000000000038001 R11=0000000000020d0f R12=ffffffff85dfde04 R13=ffffffff85dfde00 R14=ffffffff85dfde00 R15=dffffc0000000000 RIP=ffffffff8112fc5a 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 00007fee8f1f4900 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=00007fee8e620430 CR3=000000000ca18000 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=746680ffdb154397354c7939b1015484 XMM02=ec2efd57dc4c00df000000000011c470 XMM03=926963e68a60347c000000000011c540 XMM04=0753cad804437dda00000000000ae988 XMM05=fafa4bc3fdafbec80000000000133f40 XMM06=806171799158d9670000000000132fe0 XMM07=fb795ef6d657705600000000001232c0 XMM08=2c67c8bc2e329bc3000000000011c4e0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff81370a8b RBX=ffffffff85db9a1c RCX=ffffffff81370a89 RDX=0000000000000000 RSI=ffffffff860d2550 RDI=ffffffff85db99f4 RBP=ffffffff85db9a18 RSP=ffff88801690f468 R8 =ffffffff860d2550 R9 =ffff88801690f560 R10=0000000000038001 R11=000000000000fc0c R12=ffffffff85db9a18 R13=ffffffff85db99f4 R14=ffffffff85db9a14 R15=dffffc0000000000 RIP=ffffffff8112fc9f 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 00007f6dbe8df900 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=00007f6dbee96618 CR3=000000000cb88000 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