syzkaller login: [ 31.667075] BUG: Bad rss-counter state mm:000000009ee4c845 type:MM_FILEPAGES val:33 [ 31.668375] BUG: Bad rss-counter state mm:000000009ee4c845 type:MM_ANONPAGES val:22 [ 31.850082] ================================================================== [ 31.851356] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.852914] Read of size 8 at addr ffff88800cf45b38 by task sshd/221 [ 31.853782] [ 31.854037] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.855030] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.856142] Call Trace: [ 31.856516] <TASK> [ 31.856845] dump_stack_lvl+0x91/0xf0 [ 31.857425] print_report+0xcc/0x620 [ 31.858006] ? __virt_addr_valid+0x102/0x340 [ 31.858676] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.859401] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.860157] kasan_report+0xbe/0xf0 [ 31.860729] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.861439] vma_interval_tree_remove+0xc75/0xec0 [ 31.862141] vma_prepare+0xc54/0x11a0 [ 31.862700] __split_vma+0x5af/0x950 [ 31.863229] ? __pfx___split_vma+0x10/0x10 [ 31.863845] ? find_held_lock+0x2c/0x110 [ 31.864469] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.865142] ? lock_is_held_type+0x9f/0x120 [ 31.865763] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.866462] ? mtree_range_walk+0x632/0x900 [ 31.867104] ? mas_walk+0x5c7/0x7c0 [ 31.867662] do_vmi_munmap+0x1f1/0x2b0 [ 31.868242] mmap_region+0x1f9/0x2660 [ 31.868797] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.869401] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.870193] ? __pfx_lock_acquire+0x10/0x10 [ 31.870822] ? __pfx_mmap_region+0x10/0x10 [ 31.871411] ? security_mmap_addr+0x7d/0xa0 [ 31.872028] ? get_unmapped_area+0x1f5/0x3f0 [ 31.872662] do_mmap+0x854/0xf00 [ 31.873153] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.873713] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.874330] ksys_mmap_pgoff+0x3af/0x500 [ 31.874903] do_syscall_64+0x3f/0x90 [ 31.875443] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.876210] RIP: 0033:0x7ff06123cd82 [ 31.876733] 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 [ 31.879154] RSP: 002b:00007ffcdce6d948 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.880188] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff06123cd82 [ 31.881142] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ff060676000 [ 31.882110] RBP: 00007ff060676000 R08: 0000000000000009 R09: 0000000000001000 [ 31.883067] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d119badb20 [ 31.884035] R13: 00007ffcdce6d960 R14: 00007ffcdce6d990 R15: 00007ffcdce6dcf0 [ 31.884990] </TASK> [ 31.885314] [ 31.885563] Allocated by task 214: [ 31.886031] kasan_save_stack+0x22/0x50 [ 31.886610] kasan_set_track+0x25/0x30 [ 31.887162] __kasan_slab_alloc+0x59/0x70 [ 31.887746] kmem_cache_alloc+0x16b/0x370 [ 31.888364] vm_area_dup+0x20/0x160 [ 31.888868] __split_vma+0x170/0x950 [ 31.889382] split_vma+0xc6/0x110 [ 31.889867] mprotect_fixup+0x8d2/0xb30 [ 31.890417] do_mprotect_pkey+0x87e/0xd40 [ 31.890998] __x64_sys_mprotect+0x78/0xc0 [ 31.891582] do_syscall_64+0x3f/0x90 [ 31.892115] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.892828] [ 31.893166] Freed by task 214: [ 31.893608] kasan_save_stack+0x22/0x50 [ 31.894167] kasan_set_track+0x25/0x30 [ 31.894728] kasan_save_free_info+0x2b/0x50 [ 31.895310] __kasan_slab_free+0x10a/0x190 [ 31.895906] kmem_cache_free+0x10d/0x4d0 [ 31.896506] rcu_core+0x8c8/0x2860 [ 31.897019] __do_softirq+0x1b7/0x7d4 [ 31.897553] [ 31.897794] Last potentially related work creation: [ 31.898532] kasan_save_stack+0x22/0x50 [ 31.899197] __kasan_record_aux_stack+0x8e/0xa0 [ 31.899960] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.900822] remove_vma+0x139/0x170 [ 31.901418] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.902149] do_vmi_munmap+0x1f1/0x2b0 [ 31.902804] __vm_munmap+0x138/0x3a0 [ 31.903399] __x64_sys_munmap+0x59/0x80 [ 31.904078] do_syscall_64+0x3f/0x90 [ 31.904709] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.905549] [ 31.905834] The buggy address belongs to the object at ffff88800cf45ae0 [ 31.905834] which belongs to the cache vm_area_struct of size 168 [ 31.907765] The buggy address is located 88 bytes inside of [ 31.907765] freed 168-byte region [ffff88800cf45ae0, ffff88800cf45b88) [ 31.909617] [ 31.909899] The buggy address belongs to the physical page: [ 31.910769] page:000000006e4612e0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xcf45 [ 31.912193] memcg:ffff88801451c101 [ 31.912763] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.913610] page_type: 0xffffffff() [ 31.914196] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 31.915390] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801451c101 [ 31.916604] page dumped because: kasan: bad access detected [ 31.917460] [ 31.917746] Memory state around the buggy address: [ 31.918500] ffff88800cf45a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.919632] ffff88800cf45a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 31.920746] >ffff88800cf45b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.921856] ^ [ 31.922678] ffff88800cf45b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 31.923816] ffff88800cf45c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.924955] ================================================================== [ 31.926230] Disabling lock debugging due to kernel taint [ 34.817577] BUG: Bad rss-counter state mm:00000000afd8ed6c type:MM_FILEPAGES val:33 [ 34.818388] BUG: Bad rss-counter state mm:00000000afd8ed6c type:MM_ANONPAGES val:22 [ 35.354986] BUG: Bad rss-counter state mm:00000000dbda6171 type:MM_FILEPAGES val:33 [ 35.356218] BUG: Bad rss-counter state mm:00000000dbda6171 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:22619' (ECDSA) to the list of known hosts. 2023/06/19 11:02:56 fuzzer started 2023/06/19 11:02:56 dialing manager at localhost:44161 2023/06/19 11:02:56 checking machine... 2023/06/19 11:02:56 checking revisions... [ 36.001275] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:02:56 testing simple program... [ 36.046810] cgroup: Unknown subsys name 'net' 2023/06/19 11:02:56 Manager.Check call failed: machine check failed: host setup failed: failed to run ["/syz-executor" "setup" "leak" "fault" "binfmt_misc" "usb" "802154"]: signal: broken pipe [ 37.129829] BUG: Bad rss-counter state mm:000000004a35e22c type:MM_FILEPAGES val:33 [ 37.131215] BUG: Bad rss-counter state mm:000000004a35e22c type:MM_ANONPAGES val:22 VM DIAGNOSIS: 11:02:55 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=000055fc86ae9a00 RCX=000055fc86ae9a00 RDX=0000000000000002 RSI=0000000000000020 RDI=000055fc86ad0350 RBP=0000000000000020 RSP=00007fff4511d6d0 R8 =000055fc86ad0350 R9 =000055fc86aee718 R10=00007fa5978ff010 R11=00007fa5978ff016 R12=000055fc86ae9a10 R13=0000000000000000 R14=0000000000000000 R15=00007fa5978ff00a RIP=00007fa5978fe29f RFL=00000246 [---Z-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 00007fa597957900 00000000 00000000 GS =0000 0000000000000000 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=00007fa597f0c650 CR3=000000000c4e0000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007fc7becdf000 CR3=000000000d65a000 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=738587d4df9f71919f48588d13b89f7e XMM02=ec2efd57dc4c00df000000000011ca10 XMM03=15d2efa24f6b3fb6000000000011cae0 XMM04=2b223a344f1849b500000000000ae988 XMM05=e4cb8bb95a7664b60000000000133a18 XMM06=2a6b7a81d71f57e30000000000132880 XMM07=e042d86d42eb936e00000000001241a0 XMM08=15d2efa24f6b3fb6000000000011cae0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000