syzkaller login: [ 29.583109] BUG: Bad rss-counter state mm:000000003fa5a0b3 type:MM_FILEPAGES val:33 [ 29.584275] BUG: Bad rss-counter state mm:000000003fa5a0b3 type:MM_ANONPAGES val:22 [ 29.624185] ================================================================== [ 29.624900] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.625618] Read of size 8 at addr ffff88800c5c1df0 by task sshd/221 [ 29.626209] [ 29.626380] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 29.627049] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.627797] Call Trace: [ 29.628140] [ 29.628361] dump_stack_lvl+0x91/0xf0 [ 29.628742] print_report+0xcc/0x620 [ 29.629111] ? __virt_addr_valid+0x102/0x340 [ 29.629544] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.630018] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.630518] kasan_report+0xbe/0xf0 [ 29.630890] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.631387] vma_interval_tree_remove+0xc75/0xec0 [ 29.631856] vma_prepare+0xc54/0x11a0 [ 29.632228] __split_vma+0x5af/0x950 [ 29.632589] ? __pfx___split_vma+0x10/0x10 [ 29.632997] ? find_held_lock+0x2c/0x110 [ 29.633392] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.633824] ? lock_is_held_type+0x9f/0x120 [ 29.634232] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.634686] ? mtree_range_walk+0x632/0x900 [ 29.635118] ? mas_walk+0x5c7/0x7c0 [ 29.635482] do_vmi_munmap+0x1f1/0x2b0 [ 29.635856] mmap_region+0x1f9/0x2660 [ 29.636223] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.636614] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.637153] ? __pfx_lock_acquire+0x10/0x10 [ 29.637562] ? __pfx_mmap_region+0x10/0x10 [ 29.637966] ? security_mmap_addr+0x7d/0xa0 [ 29.638369] ? get_unmapped_area+0x1f5/0x3f0 [ 29.638788] do_mmap+0x854/0xf00 [ 29.639127] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.639505] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.639936] ksys_mmap_pgoff+0x3af/0x500 [ 29.640321] do_syscall_64+0x3f/0x90 [ 29.640683] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.641179] RIP: 0033:0x7f7c7df96d82 [ 29.641549] 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 [ 29.643214] RSP: 002b:00007fff9f987c78 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.643918] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7c7df96d82 [ 29.644568] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7c7d3d0000 [ 29.645217] RBP: 00007f7c7d3d0000 R08: 0000000000000009 R09: 0000000000001000 [ 29.645872] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558fd313af70 [ 29.646524] R13: 00007fff9f987c90 R14: 00007fff9f987cc0 R15: 00007fff9f988020 [ 29.647193] [ 29.647419] [ 29.647584] Allocated by task 214: [ 29.647918] kasan_save_stack+0x22/0x50 [ 29.648303] kasan_set_track+0x25/0x30 [ 29.648684] __kasan_slab_alloc+0x59/0x70 [ 29.649087] kmem_cache_alloc+0x16b/0x370 [ 29.649487] vm_area_dup+0x20/0x160 [ 29.649828] __split_vma+0x170/0x950 [ 29.650184] split_vma+0xc6/0x110 [ 29.650523] mprotect_fixup+0x8d2/0xb30 [ 29.650910] do_mprotect_pkey+0x87e/0xd40 [ 29.651317] __x64_sys_mprotect+0x78/0xc0 [ 29.651718] do_syscall_64+0x3f/0x90 [ 29.652084] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.652576] [ 29.652740] Freed by task 13: [ 29.653038] kasan_save_stack+0x22/0x50 [ 29.653430] kasan_set_track+0x25/0x30 [ 29.653812] kasan_save_free_info+0x2b/0x50 [ 29.654220] __kasan_slab_free+0x10a/0x190 [ 29.654625] kmem_cache_free+0x10d/0x4d0 [ 29.655031] rcu_core+0x8c8/0x2860 [ 29.655377] __do_softirq+0x1b7/0x7d4 [ 29.655743] [ 29.655908] Last potentially related work creation: [ 29.656358] kasan_save_stack+0x22/0x50 [ 29.656740] __kasan_record_aux_stack+0x8e/0xa0 [ 29.657180] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.657672] remove_vma+0x139/0x170 [ 29.658024] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.658460] do_vmi_munmap+0x1f1/0x2b0 [ 29.658830] __vm_munmap+0x138/0x3a0 [ 29.659198] __x64_sys_munmap+0x59/0x80 [ 29.659580] do_syscall_64+0x3f/0x90 [ 29.659948] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.660445] [ 29.660607] The buggy address belongs to the object at ffff88800c5c1d98 [ 29.660607] which belongs to the cache vm_area_struct of size 168 [ 29.661737] The buggy address is located 88 bytes inside of [ 29.661737] freed 168-byte region [ffff88800c5c1d98, ffff88800c5c1e40) [ 29.662805] [ 29.662975] The buggy address belongs to the physical page: [ 29.663500] page:00000000ecb660b7 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800c5c1ae0 pfn:0xc5c1 [ 29.664454] memcg:ffff88800c58e001 [ 29.664779] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.665276] page_type: 0xffffffff() [ 29.665619] raw: 0100000000000200 ffff8880087a0c80 ffffea0000388fd0 ffffea00003205d0 [ 29.666339] raw: ffff88800c5c1ae0 000000000011000d 00000001ffffffff ffff88800c58e001 [ 29.667050] page dumped because: kasan: bad access detected [ 29.667558] [ 29.667724] Memory state around the buggy address: [ 29.668166] ffff88800c5c1c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 29.668816] ffff88800c5c1d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 29.669476] >ffff88800c5c1d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 29.670128] ^ [ 29.670756] ffff88800c5c1e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 29.671441] ffff88800c5c1e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.672090] ================================================================== [ 29.672810] Disabling lock debugging due to kernel taint [ 31.439103] BUG: Bad rss-counter state mm:00000000069de4b8 type:MM_FILEPAGES val:33 [ 31.440188] BUG: Bad rss-counter state mm:00000000069de4b8 type:MM_ANONPAGES val:22 [ 32.000548] BUG: Bad rss-counter state mm:00000000249e01e5 type:MM_FILEPAGES val:33 [ 32.001709] BUG: Bad rss-counter state mm:00000000249e01e5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:52354' (ECDSA) to the list of known hosts. 2023/06/20 18:53:30 fuzzer started 2023/06/20 18:53:31 dialing manager at localhost:36067 2023/06/20 18:53:31 checking machine... 2023/06/20 18:53:31 checking revisions... [ 32.634857] kmemleak: Automatic memory scanning thread ended 2023/06/20 18:53:31 testing simple program... [ 32.688101] cgroup: Unknown subsys name 'net' [ 32.725286] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:53:30 Registers: info registers vcpu 0 RAX=ffff88800c4cf7c8 RBX=00000000001fffff RCX=0000000000000000 RDX=0000000000000014 RSI=ffff88800dda034c RDI=ffff88800c4cf7c8 RBP=0000000000000001 RSP=ffff88800c4cf740 R8 =00000000001fffff R9 =0000000000000001 R10=0000000000000001 R11=0000000000000001 R12=0000000000080000 R13=0000000000000019 R14=0000000000000001 R15=ffff88800c4cf7c8 RIP=ffffffff8451312f 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 00007fafcaaa4900 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=00007fafc9ea0c10 CR3=0000000009a38000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=5f35144015458d9a00000000000ae988 XMM05=e2066a0c9a371f3b0000000000132c18 XMM06=c291bd5c70af25b90000000000131a08 XMM07=fb795ef6d65770560000000000121c90 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000076 RCX=ffffffff83723e1a RDX=ffff888019b951c0 RSI=0000000000000076 RDI=000000000000000a RBP=0000000000000077 RSP=ffff88801464f7b8 R8 =0000000000000005 R9 =0000000000000082 R10=0000000000000076 R11=00000000000b6a61 R12=000000000000000a R13=ffffffff87f99e90 R14=0000000000000000 R15=0000000000000006 RIP=ffffffff814c0348 RFL=00000293 [--S-A-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 00007f913d3bb900 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=00007f913d972618 CR3=000000000e02a000 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=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