syzkaller login: [ 30.625121] BUG: Bad rss-counter state mm:0000000097ede484 type:MM_FILEPAGES val:33 [ 30.626909] BUG: Bad rss-counter state mm:0000000097ede484 type:MM_ANONPAGES val:22 [ 30.802988] ================================================================== [ 30.804079] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.805207] Read of size 8 at addr ffff88800c9d7058 by task sshd/220 [ 30.806228] [ 30.806510] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.807536] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.808723] Call Trace: [ 30.809094] [ 30.809426] dump_stack_lvl+0x91/0xf0 [ 30.810001] print_report+0xcc/0x620 [ 30.810547] ? __virt_addr_valid+0x102/0x340 [ 30.811182] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.811908] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.812639] kasan_report+0xbe/0xf0 [ 30.813188] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.813914] vma_interval_tree_remove+0xc75/0xec0 [ 30.814625] vma_prepare+0xc54/0x11a0 [ 30.815180] __split_vma+0x5af/0x950 [ 30.815727] ? __pfx___split_vma+0x10/0x10 [ 30.816343] ? find_held_lock+0x2c/0x110 [ 30.816953] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.817605] ? lock_is_held_type+0x9f/0x120 [ 30.818238] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.818950] ? mtree_range_walk+0x632/0x900 [ 30.819585] ? mas_walk+0x5c7/0x7c0 [ 30.820149] do_vmi_munmap+0x1f1/0x2b0 [ 30.820736] mmap_region+0x1f9/0x2660 [ 30.821307] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.821918] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.822757] ? __pfx_lock_acquire+0x10/0x10 [ 30.823370] ? __pfx_mmap_region+0x10/0x10 [ 30.823976] ? security_mmap_addr+0x7d/0xa0 [ 30.824598] ? get_unmapped_area+0x1f5/0x3f0 [ 30.825231] do_mmap+0x854/0xf00 [ 30.825720] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.826287] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.826928] ksys_mmap_pgoff+0x3af/0x500 [ 30.827515] do_syscall_64+0x3f/0x90 [ 30.828049] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.828767] RIP: 0033:0x7fec2751ed82 [ 30.829264] 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 [ 30.831574] RSP: 002b:00007ffc1d1787d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.832573] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fec2751ed82 [ 30.833490] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fec26958000 [ 30.834407] RBP: 00007fec26958000 R08: 0000000000000009 R09: 0000000000001000 [ 30.835322] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561a369a8980 [ 30.836268] R13: 00007ffc1d1787f0 R14: 00007ffc1d178820 R15: 00007ffc1d178b80 [ 30.837185] [ 30.837497] [ 30.837725] Allocated by task 213: [ 30.838199] kasan_save_stack+0x22/0x50 [ 30.838740] kasan_set_track+0x25/0x30 [ 30.839273] __kasan_slab_alloc+0x59/0x70 [ 30.839850] kmem_cache_alloc+0x16b/0x370 [ 30.840436] vm_area_dup+0x20/0x160 [ 30.840927] __split_vma+0x170/0x950 [ 30.841426] split_vma+0xc6/0x110 [ 30.841901] mprotect_fixup+0x8d2/0xb30 [ 30.842454] do_mprotect_pkey+0x87e/0xd40 [ 30.843015] __x64_sys_mprotect+0x78/0xc0 [ 30.843583] do_syscall_64+0x3f/0x90 [ 30.844091] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.844944] [ 30.845182] Freed by task 213: [ 30.845621] kasan_save_stack+0x22/0x50 [ 30.846177] kasan_set_track+0x25/0x30 [ 30.846741] kasan_save_free_info+0x2b/0x50 [ 30.847342] __kasan_slab_free+0x10a/0x190 [ 30.848020] kmem_cache_free+0x10d/0x4d0 [ 30.848604] rcu_core+0x8c8/0x2860 [ 30.849089] __do_softirq+0x1b7/0x7d4 [ 30.849624] [ 30.849858] Last potentially related work creation: [ 30.850523] kasan_save_stack+0x22/0x50 [ 30.851087] __kasan_record_aux_stack+0x8e/0xa0 [ 30.851730] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.852454] remove_vma+0x139/0x170 [ 30.852947] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.853556] do_vmi_munmap+0x1f1/0x2b0 [ 30.854089] __vm_munmap+0x138/0x3a0 [ 30.854611] __x64_sys_munmap+0x59/0x80 [ 30.855154] do_syscall_64+0x3f/0x90 [ 30.855676] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.856406] [ 30.856644] The buggy address belongs to the object at ffff88800c9d7000 [ 30.856644] which belongs to the cache vm_area_struct of size 168 [ 30.858277] The buggy address is located 88 bytes inside of [ 30.858277] freed 168-byte region [ffff88800c9d7000, ffff88800c9d70a8) [ 30.859819] [ 30.860051] The buggy address belongs to the physical page: [ 30.860801] page:000000007b95ab65 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc9d7 [ 30.862000] memcg:ffff88800d3a8d01 [ 30.862457] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.863178] page_type: 0xffffffff() [ 30.863674] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.864704] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d3a8d01 [ 30.865707] page dumped because: kasan: bad access detected [ 30.866454] [ 30.866688] Memory state around the buggy address: [ 30.867336] ffff88800c9d6f00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 30.868280] ffff88800c9d6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.869209] >ffff88800c9d7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.870125] ^ [ 30.870924] ffff88800c9d7080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.871856] ffff88800c9d7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.872770] ================================================================== [ 30.873759] Disabling lock debugging due to kernel taint [ 32.806216] BUG: Bad rss-counter state mm:00000000c78d849c type:MM_FILEPAGES val:33 [ 32.807707] BUG: Bad rss-counter state mm:00000000c78d849c type:MM_ANONPAGES val:22 [ 33.295353] BUG: Bad rss-counter state mm:0000000031edb6fa type:MM_FILEPAGES val:33 [ 33.296355] BUG: Bad rss-counter state mm:0000000031edb6fa type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:44850' (ECDSA) to the list of known hosts. 2023/06/21 04:29:07 fuzzer started 2023/06/21 04:29:08 dialing manager at localhost:36067 2023/06/21 04:29:08 checking machine... 2023/06/21 04:29:08 checking revisions... [ 33.995186] kmemleak: Automatic memory scanning thread ended 2023/06/21 04:29:08 testing simple program... [ 34.044791] cgroup: Unknown subsys name 'net' [ 34.102765] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:29:07 Registers: info registers vcpu 0 RAX=ffff88806c400000 RBX=00000000630e1d7c RCX=ffff88806cb0ebe0 RDX=000000000000000d RSI=0000000000000002 RDI=000000008e7d43b8 RBP=ffff88800ca4b890 RSP=ffff88800d55f7c8 R8 =00000000be80a764 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000001 R13=0000000000000000 R14=ffff88800d55f830 R15=000000000000000d RIP=ffffffff822704ed RFL=00000246 [---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 00007f6c9e910900 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=00007ffdf0bca000 CR3=000000001beae000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 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=0000000000000001 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=00007f6b860721f0 CR3=000000000df1c000 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=9e043393fbdefa9e7f4eb86dc89e3ab9 XMM02=0000000000119948eff9b2d0a8fce9cb XMM03=0000000000119a182c67c8bc2e329bc3 XMM04=332099e82caae1ff00000000000ae988 XMM05=19e9129bd510f2350000000000131108 XMM06=4fda316b135da52b0000000000130f90 XMM07=e042d86d42eb936e00000000001214a8 XMM08=2c794c8a772526180000000000119a18 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000