syzkaller login: [ 28.569628] BUG: Bad rss-counter state mm:0000000096f2e355 type:MM_FILEPAGES val:33 [ 28.570639] BUG: Bad rss-counter state mm:0000000096f2e355 type:MM_ANONPAGES val:22 [ 28.751849] ================================================================== [ 28.752798] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.753739] Read of size 8 at addr ffff88800fe21a50 by task sshd/220 [ 28.754503] [ 28.754821] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.755720] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.756700] Call Trace: [ 28.757030] [ 28.757323] dump_stack_lvl+0x91/0xf0 [ 28.757809] print_report+0xcc/0x620 [ 28.758295] ? __virt_addr_valid+0x102/0x340 [ 28.758855] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.759488] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.760095] kasan_report+0xbe/0xf0 [ 28.760572] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.761194] vma_interval_tree_remove+0xc75/0xec0 [ 28.761802] vma_prepare+0xc54/0x11a0 [ 28.762285] __split_vma+0x5af/0x950 [ 28.762757] ? __pfx___split_vma+0x10/0x10 [ 28.763293] ? find_held_lock+0x2c/0x110 [ 28.763830] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.764406] ? lock_is_held_type+0x9f/0x120 [ 28.764948] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.765555] ? mtree_range_walk+0x632/0x900 [ 28.766111] ? mas_walk+0x5c7/0x7c0 [ 28.766592] do_vmi_munmap+0x1f1/0x2b0 [ 28.767084] mmap_region+0x1f9/0x2660 [ 28.767584] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.768104] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.768824] ? __pfx_lock_acquire+0x10/0x10 [ 28.769365] ? __pfx_mmap_region+0x10/0x10 [ 28.769898] ? security_mmap_addr+0x7d/0xa0 [ 28.770437] ? get_unmapped_area+0x1f5/0x3f0 [ 28.771002] do_mmap+0x854/0xf00 [ 28.771451] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.771956] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.772517] ksys_mmap_pgoff+0x3af/0x500 [ 28.773024] do_syscall_64+0x3f/0x90 [ 28.773503] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.774167] RIP: 0033:0x7f38184b1d82 [ 28.774641] 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 [ 28.776812] RSP: 002b:00007fffe7dc4218 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.777725] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f38184b1d82 [ 28.778589] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f38178eb000 [ 28.779454] RBP: 00007f38178eb000 R08: 0000000000000009 R09: 0000000000001000 [ 28.780304] R10: 0000000000000812 R11: 0000000000000206 R12: 000055988f1d6ec0 [ 28.781158] R13: 00007fffe7dc4230 R14: 00007fffe7dc4260 R15: 00007fffe7dc45c0 [ 28.782028] [ 28.782321] [ 28.782536] Allocated by task 213: [ 28.782967] kasan_save_stack+0x22/0x50 [ 28.783477] kasan_set_track+0x25/0x30 [ 28.783974] __kasan_slab_alloc+0x59/0x70 [ 28.784505] kmem_cache_alloc+0x16b/0x370 [ 28.785022] vm_area_dup+0x20/0x160 [ 28.785478] __split_vma+0x170/0x950 [ 28.785946] split_vma+0xc6/0x110 [ 28.786393] mprotect_fixup+0x8d2/0xb30 [ 28.786902] do_mprotect_pkey+0x87e/0xd40 [ 28.787438] __x64_sys_mprotect+0x78/0xc0 [ 28.787966] do_syscall_64+0x3f/0x90 [ 28.788442] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.789086] [ 28.789304] Freed by task 13: [ 28.789696] kasan_save_stack+0x22/0x50 [ 28.790209] kasan_set_track+0x25/0x30 [ 28.790702] kasan_save_free_info+0x2b/0x50 [ 28.791237] __kasan_slab_free+0x10a/0x190 [ 28.791783] kmem_cache_free+0x10d/0x4d0 [ 28.792297] rcu_core+0x8c8/0x2860 [ 28.792751] __do_softirq+0x1b7/0x7d4 [ 28.793236] [ 28.793452] Last potentially related work creation: [ 28.794040] kasan_save_stack+0x22/0x50 [ 28.794549] __kasan_record_aux_stack+0x8e/0xa0 [ 28.795127] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.795799] remove_vma+0x139/0x170 [ 28.796249] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.796809] do_vmi_munmap+0x1f1/0x2b0 [ 28.797300] __vm_munmap+0x138/0x3a0 [ 28.797769] __x64_sys_munmap+0x59/0x80 [ 28.798267] do_syscall_64+0x3f/0x90 [ 28.798752] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.799415] [ 28.799634] The buggy address belongs to the object at ffff88800fe219f8 [ 28.799634] which belongs to the cache vm_area_struct of size 168 [ 28.801100] The buggy address is located 88 bytes inside of [ 28.801100] freed 168-byte region [ffff88800fe219f8, ffff88800fe21aa0) [ 28.802507] [ 28.802727] The buggy address belongs to the physical page: [ 28.803401] page:000000001f37106d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfe21 [ 28.804492] memcg:ffff88800fd89a01 [ 28.804922] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.805568] page_type: 0xffffffff() [ 28.806021] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 28.806947] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fd89a01 [ 28.807867] page dumped because: kasan: bad access detected [ 28.808528] [ 28.808746] Memory state around the buggy address: [ 28.809326] ffff88800fe21900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.810183] ffff88800fe21980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 28.811054] >ffff88800fe21a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.811918] ^ [ 28.812626] ffff88800fe21a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 28.813480] ffff88800fe21b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.814331] ================================================================== [ 28.815485] Disabling lock debugging due to kernel taint [ 30.984220] BUG: Bad rss-counter state mm:0000000002317b10 type:MM_FILEPAGES val:33 [ 30.985651] BUG: Bad rss-counter state mm:0000000002317b10 type:MM_ANONPAGES val:22 [ 31.463157] BUG: Bad rss-counter state mm:0000000001dd7c11 type:MM_FILEPAGES val:33 [ 31.464298] BUG: Bad rss-counter state mm:0000000001dd7c11 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:5245' (ECDSA) to the list of known hosts. 2023/06/21 10:29:44 fuzzer started 2023/06/21 10:29:44 dialing manager at localhost:36067 2023/06/21 10:29:44 checking machine... 2023/06/21 10:29:44 checking revisions... [ 32.229815] kmemleak: Automatic memory scanning thread ended 2023/06/21 10:29:44 testing simple program... [ 32.275730] cgroup: Unknown subsys name 'net' [ 32.318949] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 10:29:44 Registers: info registers vcpu 0 RAX=0000000000038000 RBX=0000000000000001 RCX=ffffffff83641c43 RDX=dffffc0000000000 RSI=000000000002641c RDI=ffff88801640f5a8 RBP=ffff88801640f600 RSP=ffff88801640f538 R8 =0000000000000001 R9 =ffff88801640f5e8 R10=0000000000038001 R11=000000000008ab47 R12=ffff88801640f608 R13=ffff88801640f5f0 R14=ffff88801640f5e9 R15=ffff88801640f5a8 RIP=ffffffff81130754 RFL=00000283 [--S---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 00007f2dd5586700 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=00007ffccbaa1000 CR3=0000000019aca000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3932325b646873732033343a3932 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320343130 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 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 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=00007f3b37929030 CR3=000000000cb8a000 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=3c5681268fbaffa38e4b560437cf6c1c XMM02=00000000001191b8eff9b2d0a8fce9cb XMM03=00000000001192882c67c8bc2e329bc3 XMM04=a82983d203a276c900000000000ae988 XMM05=19e9129bd510f23500000000001307c0 XMM06=b101b5a50b8f4692000000000012eec0 XMM07=e042d86d42eb936e00000000001208f8 XMM08=16b11b71a135ea200000000000119288 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000