[ 34.089291] BUG: Bad rss-counter state mm:000000006e552a51 type:MM_FILEPAGES val:33 [ 34.090487] BUG: Bad rss-counter state mm:000000006e552a51 type:MM_ANONPAGES val:22 [ 34.253884] ================================================================== [ 34.254789] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 34.255725] Read of size 8 at addr ffff88800e30ddf0 by task sshd/219 [ 34.256505] [ 34.256720] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 34.257723] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 34.258712] Call Trace: [ 34.259032] [ 34.259326] dump_stack_lvl+0x91/0xf0 [ 34.259814] print_report+0xcc/0x620 [ 34.260297] ? __virt_addr_valid+0x102/0x340 [ 34.260843] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.261466] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.262084] kasan_report+0xbe/0xf0 [ 34.262557] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.263183] vma_interval_tree_remove+0xc75/0xec0 [ 34.263779] vma_prepare+0xc54/0x11a0 [ 34.264257] __split_vma+0x5af/0x950 [ 34.264721] ? __pfx___split_vma+0x10/0x10 [ 34.265246] ? find_held_lock+0x2c/0x110 [ 34.265776] do_vmi_align_munmap+0x2ba/0x11f0 [ 34.266335] ? lock_is_held_type+0x9f/0x120 [ 34.266866] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 34.267467] ? mtree_range_walk+0x632/0x900 [ 34.268014] ? mas_walk+0x5c7/0x7c0 [ 34.268484] do_vmi_munmap+0x1f1/0x2b0 [ 34.268972] mmap_region+0x1f9/0x2660 [ 34.269471] ? vm_mmap_pgoff+0x15c/0x3a0 [ 34.269988] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 34.270702] ? __pfx_lock_acquire+0x10/0x10 [ 34.271230] ? __pfx_mmap_region+0x10/0x10 [ 34.271754] ? security_mmap_addr+0x7d/0xa0 [ 34.272282] ? get_unmapped_area+0x1f5/0x3f0 [ 34.272823] do_mmap+0x854/0xf00 [ 34.273261] vm_mmap_pgoff+0x1a6/0x3a0 [ 34.273768] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 34.274326] ksys_mmap_pgoff+0x3af/0x500 [ 34.274825] do_syscall_64+0x3f/0x90 [ 34.275300] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.275937] RIP: 0033:0x7f14892d9d82 [ 34.276388] 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 [ 34.278497] RSP: 002b:00007fff8e9f11b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 34.279394] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f14892d9d82 [ 34.280237] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1488713000 [ 34.281088] RBP: 00007f1488713000 R08: 0000000000000009 R09: 0000000000001000 [ 34.281946] R10: 0000000000000812 R11: 0000000000000206 R12: 000055dd7f394f70 [ 34.282779] R13: 00007fff8e9f11d0 R14: 00007fff8e9f1200 R15: 00007fff8e9f1560 [ 34.283635] [ 34.283929] [ 34.284144] Allocated by task 212: [ 34.284572] kasan_save_stack+0x22/0x50 [ 34.285078] kasan_set_track+0x25/0x30 [ 34.285581] __kasan_slab_alloc+0x59/0x70 [ 34.286109] kmem_cache_alloc+0x16b/0x370 [ 34.286623] vm_area_dup+0x20/0x160 [ 34.287082] __split_vma+0x170/0x950 [ 34.287549] split_vma+0xc6/0x110 [ 34.287991] mprotect_fixup+0x8d2/0xb30 [ 34.288508] do_mprotect_pkey+0x87e/0xd40 [ 34.289044] __x64_sys_mprotect+0x78/0xc0 [ 34.289594] do_syscall_64+0x3f/0x90 [ 34.290086] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.290750] [ 34.290975] Freed by task 212: [ 34.291384] kasan_save_stack+0x22/0x50 [ 34.291909] kasan_set_track+0x25/0x30 Debian GNU/Li[ 34.292446] kasan_save_free_info+0x2b/0x50 nux 11 syzkaller[ 34.293205] __kasan_slab_free+0x10a/0x190 ttyS0 syzkal[ 34.293929] kmem_cache_free+0x10d/0x4d0 ler login: [ 34.294625] rcu_core+0x8c8/0x2860 [ 34.295219] __do_softirq+0x1b7/0x7d4 [ 34.295715] [ 34.295937] Last potentially related work creation: [ 34.296549] kasan_save_stack+0x22/0x50 [ 34.297070] __kasan_record_aux_stack+0x8e/0xa0 [ 34.297679] __call_rcu_common.constprop.0+0x6a/0xb90 [ 34.298346] remove_vma+0x139/0x170 [ 34.298814] do_vmi_align_munmap+0xd4a/0x11f0 [ 34.299385] do_vmi_munmap+0x1f1/0x2b0 [ 34.299891] __vm_munmap+0x138/0x3a0 [ 34.300373] __x64_sys_munmap+0x59/0x80 [ 34.300885] do_syscall_64+0x3f/0x90 [ 34.301376] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.302036] [ 34.302256] The buggy address belongs to the object at ffff88800e30dd98 [ 34.302256] which belongs to the cache vm_area_struct of size 168 [ 34.303781] The buggy address is located 88 bytes inside of [ 34.303781] freed 168-byte region [ffff88800e30dd98, ffff88800e30de40) [ 34.305225] [ 34.305461] The buggy address belongs to the physical page: [ 34.306126] page:00000000f7a2975e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe30d [ 34.307210] memcg:ffff88800ec7d501 [ 34.307636] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 34.308332] page_type: 0xffffffff() [ 34.308780] raw: 0100000000000200 ffff88800879fc80 ffffea0000236d00 dead000000000007 [ 34.309712] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ec7d501 [ 34.310620] page dumped because: kasan: bad access detected [ 34.311270] [ 34.311483] Memory state around the buggy address: [ 34.312059] ffff88800e30dc80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 34.312908] ffff88800e30dd00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 34.313778] >ffff88800e30dd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 34.314633] ^ [ 34.315456] ffff88800e30de00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.316312] ffff88800e30de80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.317171] ================================================================== [ 34.318202] Disabling lock debugging due to kernel taint [ 36.177164] BUG: Bad rss-counter state mm:00000000a1989ccd type:MM_FILEPAGES val:33 [ 36.178136] BUG: Bad rss-counter state mm:00000000a1989ccd type:MM_ANONPAGES val:22 [ 36.747762] BUG: Bad rss-counter state mm:0000000005c422e4 type:MM_FILEPAGES val:33 [ 36.748958] BUG: Bad rss-counter state mm:0000000005c422e4 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:49593' (ECDSA) to the list of known hosts. 2023/06/19 17:53:56 fuzzer started 2023/06/19 17:53:56 dialing manager at localhost:44161 2023/06/19 17:53:56 checking machine... 2023/06/19 17:53:56 checking revisions... [ 37.418132] kmemleak: Automatic memory scanning thread ended 2023/06/19 17:53:56 testing simple program... [ 37.468322] cgroup: Unknown subsys name 'net' [ 37.531886] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:53:53 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=ffff888008c58000 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=00007f73f8b030f0 CR3=000000000f1e0000 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=2035353a33353a3731203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732035353a33353a3731203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff8609675b RBX=0000000000000001 RCX=ffffffff86096756 RDX=dffffc0000000000 RSI=0000000000000000 RDI=1ffffffff0c12ceb RBP=ffff88800fd3f840 RSP=ffff88800fd3f728 R8 =ffffffff8609675a R9 =0000000000000000 R10=0000000000038001 R11=0000000000006097 R12=ffff88800fd3f848 R13=ffff88800fd3f830 R14=ffff88800fd3f829 R15=ffff88800fd3f7e8 RIP=ffffffff81130aa4 RFL=00000216 [----AP-] 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 00007f43bf6cf900 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=00007ffc1799f000 CR3=0000000019f8a000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000