syzkaller login: [ 30.581580] BUG: Bad rss-counter state mm:0000000083f79d53 type:MM_FILEPAGES val:33 [ 30.582886] BUG: Bad rss-counter state mm:0000000083f79d53 type:MM_ANONPAGES val:22 [ 30.745330] ================================================================== [ 30.746394] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.747350] Read of size 8 at addr ffff88800e444058 by task sshd/221 [ 30.748293] [ 30.748512] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.749401] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.750420] Call Trace: [ 30.750752] [ 30.751044] dump_stack_lvl+0x91/0xf0 [ 30.751543] print_report+0xcc/0x620 [ 30.752061] ? __virt_addr_valid+0x102/0x340 [ 30.752614] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.753264] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.753888] kasan_report+0xbe/0xf0 [ 30.754384] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.755024] vma_interval_tree_remove+0xc75/0xec0 [ 30.755644] vma_prepare+0xc54/0x11a0 [ 30.756129] __split_vma+0x5af/0x950 [ 30.756602] ? __pfx___split_vma+0x10/0x10 [ 30.757136] ? find_held_lock+0x2c/0x110 [ 30.757672] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.758237] ? lock_is_held_type+0x9f/0x120 [ 30.758778] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.759391] ? mtree_range_walk+0x632/0x900 [ 30.759944] ? mas_walk+0x5c7/0x7c0 [ 30.760422] do_vmi_munmap+0x1f1/0x2b0 [ 30.760918] mmap_region+0x1f9/0x2660 [ 30.761416] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.761931] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.762650] ? __pfx_lock_acquire+0x10/0x10 [ 30.763187] ? __pfx_mmap_region+0x10/0x10 [ 30.763718] ? security_mmap_addr+0x7d/0xa0 [ 30.764254] ? get_unmapped_area+0x1f5/0x3f0 [ 30.764809] do_mmap+0x854/0xf00 [ 30.765265] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.765766] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.766340] ksys_mmap_pgoff+0x3af/0x500 [ 30.766854] do_syscall_64+0x3f/0x90 [ 30.767331] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.767978] RIP: 0033:0x7f2163bb7d82 [ 30.768437] 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 [ 30.770574] RSP: 002b:00007fff7c135d88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.771499] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2163bb7d82 [ 30.772362] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f2162ff1000 [ 30.773229] RBP: 00007f2162ff1000 R08: 0000000000000009 R09: 0000000000001000 [ 30.774084] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c26110aec0 [ 30.774951] R13: 00007fff7c135da0 R14: 00007fff7c135dd0 R15: 00007fff7c136130 [ 30.775821] [ 30.776122] [ 30.776343] Allocated by task 214: [ 30.776781] kasan_save_stack+0x22/0x50 [ 30.777301] kasan_set_track+0x25/0x30 [ 30.777795] __kasan_slab_alloc+0x59/0x70 [ 30.778320] kmem_cache_alloc+0x16b/0x370 [ 30.778841] vm_area_dup+0x20/0x160 [ 30.779307] __split_vma+0x170/0x950 [ 30.779775] split_vma+0xc6/0x110 [ 30.780219] mprotect_fixup+0x8d2/0xb30 [ 30.780721] do_mprotect_pkey+0x87e/0xd40 [ 30.781251] __x64_sys_mprotect+0x78/0xc0 [ 30.781780] do_syscall_64+0x3f/0x90 [ 30.782252] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.782897] [ 30.783113] Freed by task 214: [ 30.783506] kasan_save_stack+0x22/0x50 [ 30.784016] kasan_set_track+0x25/0x30 [ 30.784515] kasan_save_free_info+0x2b/0x50 [ 30.785057] __kasan_slab_free+0x10a/0x190 [ 30.785603] kmem_cache_free+0x10d/0x4d0 [ 30.786118] rcu_core+0x8c8/0x2860 [ 30.786572] __do_softirq+0x1b7/0x7d4 [ 30.787061] [ 30.787277] Last potentially related work creation: [ 30.787871] kasan_save_stack+0x22/0x50 [ 30.788378] __kasan_record_aux_stack+0x8e/0xa0 [ 30.788963] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.789620] remove_vma+0x139/0x170 [ 30.790072] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.790637] do_vmi_munmap+0x1f1/0x2b0 [ 30.791131] __vm_munmap+0x138/0x3a0 [ 30.791598] __x64_sys_munmap+0x59/0x80 [ 30.792099] do_syscall_64+0x3f/0x90 [ 30.792579] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.793230] [ 30.793449] The buggy address belongs to the object at ffff88800e444000 [ 30.793449] which belongs to the cache vm_area_struct of size 168 [ 30.794933] The buggy address is located 88 bytes inside of [ 30.794933] freed 168-byte region [ffff88800e444000, ffff88800e4440a8) [ 30.796345] [ 30.796563] The buggy address belongs to the physical page: [ 30.797240] page:000000005f208ecc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe444 [ 30.798326] memcg:ffff88800e086501 [ 30.798759] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.799405] page_type: 0xffffffff() [ 30.799859] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.800782] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e086501 [ 30.801712] page dumped because: kasan: bad access detected [ 30.802379] [ 30.802599] Memory state around the buggy address: [ 30.803187] ffff88800e443f00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 30.804055] ffff88800e443f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.804926] >ffff88800e444000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.805791] ^ [ 30.806534] ffff88800e444080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.807389] ffff88800e444100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.808241] ================================================================== [ 30.809416] Disabling lock debugging due to kernel taint [ 33.477565] BUG: Bad rss-counter state mm:0000000027d9cea6 type:MM_FILEPAGES val:33 [ 33.478470] BUG: Bad rss-counter state mm:0000000027d9cea6 type:MM_ANONPAGES val:22 [ 34.004290] BUG: Bad rss-counter state mm:00000000afba381a type:MM_FILEPAGES val:33 [ 34.005491] BUG: Bad rss-counter state mm:00000000afba381a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:17525' (ECDSA) to the list of known hosts. 2023/06/19 12:24:07 fuzzer started 2023/06/19 12:24:07 dialing manager at localhost:44161 2023/06/19 12:24:07 checking machine... 2023/06/19 12:24:07 checking revisions... [ 34.641896] kmemleak: Automatic memory scanning thread ended 2023/06/19 12:24:07 testing simple program... [ 34.682892] cgroup: Unknown subsys name 'net' [ 34.719212] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:24:06 Registers: info registers vcpu 0 RAX=ffffffff813ad658 RBX=ffffffff85dbc1f0 RCX=ffffffff813ad6cf RDX=0000000000000000 RSI=ffffffff860d68c0 RDI=ffffffff85dbc1cc RBP=ffffffff85dbc1e8 RSP=ffff88801465f3b0 R8 =ffffffff860d68c0 R9 =ffff88801465f4a8 R10=0000000000038001 R11=0000000000010b7e R12=ffffffff85dbc1fc R13=ffffffff85dbc1cc R14=ffffffff85dbc1e4 R15=dffffc0000000000 RIP=ffffffff8112fc99 RFL=00000206 [-----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 00007f313fe91900 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=00007f3140446650 CR3=000000001a0d4000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007ffeca64a6c8 CR3=000000000f150000 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=2036303a34323a3231203931206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036303a34323a3231203931 XMM08=00007ff67c0026b00000004f00000080 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000