syzkaller login: [ 30.135078] BUG: Bad rss-counter state mm:0000000037e3e09e type:MM_FILEPAGES val:33 [ 30.136569] BUG: Bad rss-counter state mm:0000000037e3e09e type:MM_ANONPAGES val:22 [ 30.279065] ================================================================== [ 30.280056] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.281051] Read of size 8 at addr ffff88800e54d140 by task sshd/221 [ 30.281873] [ 30.282230] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.283168] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.284251] Call Trace: [ 30.284597] [ 30.284905] dump_stack_lvl+0x91/0xf0 [ 30.285432] print_report+0xcc/0x620 [ 30.285965] ? __virt_addr_valid+0x102/0x340 [ 30.286578] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.287241] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.287900] kasan_report+0xbe/0xf0 [ 30.288412] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.289076] vma_interval_tree_remove+0xc75/0xec0 [ 30.289716] vma_prepare+0xc54/0x11a0 [ 30.290234] __split_vma+0x5af/0x950 [ 30.290739] ? __pfx___split_vma+0x10/0x10 [ 30.291298] ? find_held_lock+0x2c/0x110 [ 30.291853] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.292460] ? lock_is_held_type+0x9f/0x120 [ 30.293037] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.293682] ? mtree_range_walk+0x632/0x900 [ 30.294286] ? mas_walk+0x5c7/0x7c0 [ 30.294798] do_vmi_munmap+0x1f1/0x2b0 [ 30.295322] mmap_region+0x1f9/0x2660 [ 30.295837] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.296383] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.297148] ? __pfx_lock_acquire+0x10/0x10 [ 30.297718] ? __pfx_mmap_region+0x10/0x10 [ 30.298295] ? security_mmap_addr+0x7d/0xa0 [ 30.298862] ? get_unmapped_area+0x1f5/0x3f0 [ 30.299455] do_mmap+0x854/0xf00 [ 30.299921] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.300443] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.301041] ksys_mmap_pgoff+0x3af/0x500 [ 30.301586] do_syscall_64+0x3f/0x90 [ 30.302104] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.302807] RIP: 0033:0x7fa3b5900d82 [ 30.303300] 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 [ 30.305560] RSP: 002b:00007ffca5195b08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.306537] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa3b5900d82 [ 30.307434] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa3b4d3a000 [ 30.308337] RBP: 00007fa3b4d3a000 R08: 0000000000000009 R09: 0000000000001000 [ 30.309233] R10: 0000000000000812 R11: 0000000000000206 R12: 00005637b9dfff70 [ 30.310126] R13: 00007ffca5195b20 R14: 00007ffca5195b50 R15: 00007ffca5195eb0 [ 30.311041] [ 30.311349] [ 30.311577] Allocated by task 214: [ 30.312035] kasan_save_stack+0x22/0x50 [ 30.312578] kasan_set_track+0x25/0x30 [ 30.313100] __kasan_slab_alloc+0x59/0x70 [ 30.313662] kmem_cache_alloc+0x16b/0x370 [ 30.314231] vm_area_dup+0x20/0x160 [ 30.314726] __split_vma+0x170/0x950 [ 30.315226] split_vma+0xc6/0x110 [ 30.315701] mprotect_fixup+0x8d2/0xb30 [ 30.316236] do_mprotect_pkey+0x87e/0xd40 [ 30.316789] __x64_sys_mprotect+0x78/0xc0 [ 30.317344] do_syscall_64+0x3f/0x90 [ 30.317858] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.318547] [ 30.318775] Freed by task 214: [ 30.319191] kasan_save_stack+0x22/0x50 [ 30.319738] kasan_set_track+0x25/0x30 [ 30.320272] kasan_save_free_info+0x2b/0x50 [ 30.320840] __kasan_slab_free+0x10a/0x190 [ 30.321411] kmem_cache_free+0x10d/0x4d0 [ 30.321960] rcu_core+0x8c8/0x2860 [ 30.322441] __do_softirq+0x1b7/0x7d4 [ 30.322966] [ 30.323286] Last potentially related work creation: [ 30.323927] kasan_save_stack+0x22/0x50 [ 30.324486] __kasan_record_aux_stack+0x8e/0xa0 [ 30.325100] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.325803] remove_vma+0x139/0x170 [ 30.326308] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.326913] do_vmi_munmap+0x1f1/0x2b0 [ 30.327445] __vm_munmap+0x138/0x3a0 [ 30.327958] __x64_sys_munmap+0x59/0x80 [ 30.328492] do_syscall_64+0x3f/0x90 [ 30.329013] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.329696] [ 30.329929] The buggy address belongs to the object at ffff88800e54d0e8 [ 30.329929] which belongs to the cache vm_area_struct of size 168 [ 30.331536] The buggy address is located 88 bytes inside of [ 30.331536] freed 168-byte region [ffff88800e54d0e8, ffff88800e54d190) [ 30.333031] [ 30.333261] The buggy address belongs to the physical page: [ 30.333960] page:000000005d404fa0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe54d [ 30.335131] memcg:ffff88800f024701 [ 30.335579] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.336268] page_type: 0xffffffff() [ 30.336751] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.337731] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f024701 [ 30.338724] page dumped because: kasan: bad access detected [ 30.339419] [ 30.339649] Memory state around the buggy address: [ 30.340257] ffff88800e54d000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.341165] ffff88800e54d080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 30.342073] >ffff88800e54d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.343012] ^ [ 30.343703] ffff88800e54d180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.344607] ffff88800e54d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.345509] ================================================================== [ 30.346528] Disabling lock debugging due to kernel taint [ 32.060710] BUG: Bad rss-counter state mm:00000000bc274417 type:MM_FILEPAGES val:33 [ 32.062048] BUG: Bad rss-counter state mm:00000000bc274417 type:MM_ANONPAGES val:22 [ 32.479732] BUG: Bad rss-counter state mm:000000008bc05d2e type:MM_FILEPAGES val:33 [ 32.480899] BUG: Bad rss-counter state mm:000000008bc05d2e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:10194' (ECDSA) to the list of known hosts. 2023/06/21 07:41:00 fuzzer started 2023/06/21 07:41:00 dialing manager at localhost:36067 2023/06/21 07:41:00 checking machine... 2023/06/21 07:41:00 checking revisions... [ 33.121580] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:41:00 testing simple program... [ 33.164416] cgroup: Unknown subsys name 'net' [ 33.202232] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:40:59 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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=00007fb738f21100 CR3=000000000ed84000 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=b7af18326cbb16bc6947cabfbbc082a9 XMM02=000000000011a540eff9b2d0a8fce9cb XMM03=000000000011a6102c67c8bc2e329bc3 XMM04=88132ddee73c6d8000000000000ae988 XMM05=e4cb8bb95a7664b60000000000131820 XMM06=df4c5babd0ad41af0000000000130688 XMM07=e042d86d42eb936e0000000000121cd0 XMM08=07d2d49bdf083a4e000000000011a610 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88800c5f2000 RBX=ffff88800da68528 RCX=1ffff11001c54b90 RDX=dffffc0000000000 RSI=ffff88800c5f2be0 RDI=ffff88800da68558 RBP=ffff88801670f8c8 RSP=ffff888016c1fbc8 R8 =0000000000000001 R9 =0000000000000246 R10=0000000000000003 R11=00000000000b6a61 R12=ffff88800c5f2bc0 R13=0000000000000000 R14=ffff88800d0fd178 R15=ffff88800d0fd130 RIP=ffffffff81847688 RFL=00000046 [---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 00007f4573868900 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=00007ffc1fc35000 CR3=000000000ee0c000 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