syzkaller login: [ 29.475231] BUG: Bad rss-counter state mm:00000000e3978c09 type:MM_FILEPAGES val:33 [ 29.476223] BUG: Bad rss-counter state mm:00000000e3978c09 type:MM_ANONPAGES val:22 [ 29.644696] ================================================================== [ 29.645597] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.646567] Read of size 8 at addr ffff88800ee1a058 by task sshd/219 [ 29.647349] [ 29.647570] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.648636] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.649621] Call Trace: [ 29.649937] [ 29.650227] dump_stack_lvl+0x91/0xf0 [ 29.650744] print_report+0xcc/0x620 [ 29.651232] ? __virt_addr_valid+0x102/0x340 [ 29.651796] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.652432] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.653056] kasan_report+0xbe/0xf0 [ 29.653526] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.654142] vma_interval_tree_remove+0xc75/0xec0 [ 29.654755] vma_prepare+0xc54/0x11a0 [ 29.655235] __split_vma+0x5af/0x950 [ 29.655712] ? __pfx___split_vma+0x10/0x10 [ 29.656233] ? find_held_lock+0x2c/0x110 [ 29.656754] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.657319] ? lock_is_held_type+0x9f/0x120 [ 29.657854] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.658501] ? mtree_range_walk+0x632/0x900 [ 29.659097] ? mas_walk+0x5c7/0x7c0 [ 29.659570] do_vmi_munmap+0x1f1/0x2b0 [ 29.660064] mmap_region+0x1f9/0x2660 [ 29.660551] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.661060] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.661780] ? __pfx_lock_acquire+0x10/0x10 [ 29.662317] ? __pfx_mmap_region+0x10/0x10 [ 29.662873] ? security_mmap_addr+0x7d/0xa0 [ 29.663399] ? get_unmapped_area+0x1f5/0x3f0 [ 29.663952] do_mmap+0x854/0xf00 [ 29.664390] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.664880] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.665437] ksys_mmap_pgoff+0x3af/0x500 [ 29.665947] do_syscall_64+0x3f/0x90 [ 29.666422] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.667086] RIP: 0033:0x7f6b34584d82 [ 29.667539] 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 [ 29.669662] RSP: 002b:00007fffc5090b68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.670601] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6b34584d82 [ 29.671439] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f6b339be000 [ 29.672293] RBP: 00007f6b339be000 R08: 0000000000000009 R09: 0000000000001000 [ 29.673132] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f7dd177b20 [ 29.673989] R13: 00007fffc5090b80 R14: 00007fffc5090bb0 R15: 00007fffc5090f10 [ 29.674862] [ 29.675152] [ 29.675370] Allocated by task 212: [ 29.675802] kasan_save_stack+0x22/0x50 [ 29.676306] kasan_set_track+0x25/0x30 [ 29.676814] __kasan_slab_alloc+0x59/0x70 [ 29.677337] kmem_cache_alloc+0x16b/0x370 [ 29.677864] vm_area_dup+0x20/0x160 [ 29.678323] __split_vma+0x170/0x950 [ 29.678804] split_vma+0xc6/0x110 [ 29.679238] mprotect_fixup+0x8d2/0xb30 [ 29.679737] do_mprotect_pkey+0x87e/0xd40 [ 29.680262] __x64_sys_mprotect+0x78/0xc0 [ 29.680782] do_syscall_64+0x3f/0x90 [ 29.681267] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.681919] [ 29.682132] Freed by task 212: [ 29.682540] kasan_save_stack+0x22/0x50 [ 29.683052] kasan_set_track+0x25/0x30 [ 29.683559] kasan_save_free_info+0x2b/0x50 [ 29.684087] __kasan_slab_free+0x10a/0x190 [ 29.684634] kmem_cache_free+0x10d/0x4d0 [ 29.685140] rcu_core+0x8c8/0x2860 [ 29.685588] __do_softirq+0x1b7/0x7d4 [ 29.686058] [ 29.686270] Last potentially related work creation: [ 29.686864] kasan_save_stack+0x22/0x50 [ 29.687362] __kasan_record_aux_stack+0x8e/0xa0 [ 29.687963] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.688605] remove_vma+0x139/0x170 [ 29.689063] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.689619] do_vmi_munmap+0x1f1/0x2b0 [ 29.690108] __vm_munmap+0x138/0x3a0 [ 29.690579] __x64_sys_munmap+0x59/0x80 [ 29.691076] do_syscall_64+0x3f/0x90 [ 29.691553] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.692198] [ 29.692410] The buggy address belongs to the object at ffff88800ee1a000 [ 29.692410] which belongs to the cache vm_area_struct of size 168 [ 29.693893] The buggy address is located 88 bytes inside of [ 29.693893] freed 168-byte region [ffff88800ee1a000, ffff88800ee1a0a8) [ 29.695348] [ 29.695563] The buggy address belongs to the physical page: [ 29.696214] page:000000002b5d00c5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xee1a [ 29.697295] memcg:ffff88800e46f301 [ 29.697721] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.698363] page_type: 0xffffffff() [ 29.698827] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 29.699759] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e46f301 [ 29.700681] page dumped because: kasan: bad access detected [ 29.701336] [ 29.701556] Memory state around the buggy address: [ 29.702177] ffff88800ee19f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.703102] ffff88800ee19f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.704001] >ffff88800ee1a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.704888] ^ [ 29.705650] ffff88800ee1a080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 29.706550] ffff88800ee1a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.707471] ================================================================== [ 29.708491] Disabling lock debugging due to kernel taint [ 31.881329] BUG: Bad rss-counter state mm:00000000cbe38180 type:MM_FILEPAGES val:33 [ 31.882502] BUG: Bad rss-counter state mm:00000000cbe38180 type:MM_ANONPAGES val:22 [ 32.285980] BUG: Bad rss-counter state mm:000000007da41d1f type:MM_FILEPAGES val:33 [ 32.287024] BUG: Bad rss-counter state mm:000000007da41d1f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:21413' (ECDSA) to the list of known hosts. 2023/06/19 18:52:44 fuzzer started 2023/06/19 18:52:44 dialing manager at localhost:44161 2023/06/19 18:52:44 checking machine... 2023/06/19 18:52:44 checking revisions... [ 33.034006] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:52:44 testing simple program... [ 33.088415] cgroup: Unknown subsys name 'net' [ 33.130232] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:52:43 Registers: info registers vcpu 0 RAX=ffffed100287deb3 RBX=ffff88801426a778 RCX=0000000000000000 RDX=0000000000000000 RSI=ffffffff81808a08 RDI=ffffffff8560b640 RBP=1ffff1100287deb3 RSP=ffff8880143ef588 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=0000000000000000 R11=0000000000000001 R12=ffffffff8560b640 R13=ffffffff81808a08 R14=0000000000000cc0 R15=0000000000000cc0 RIP=ffffffff812d8660 RFL=00000282 [--S----] 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 00007fa035295900 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=00007fa0347b5000 CR3=0000000013a2e000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=b51e8eb98ed932bd00000000000ae988 XMM05=8c4771e35c5790a40000000000134de0 XMM06=19e9129bd510f2350000000000133c78 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806c400000 RBX=000000006bda976e RCX=ffff88806c94bb70 RDX=0000000000000007 RSI=0000000000000002 RDI=000000004dd5ca1b RBP=0000000000000000 RSP=ffff88806cf09b20 R8 =00000000406c657a R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=0000000000000000 R13=0000000000000000 R14=ffff88806cf09b88 R15=0000000000000007 RIP=ffffffff82270f10 RFL=00000202 [-------] 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 00007fb44c661900 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=00007fb44cc18618 CR3=000000000e6e8000 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=563412feff00545000000000000080fe 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