[ 23.607721] BUG: Bad rss-counter state mm:0000000016fee23b type:MM_FILEPAGES val:33 [ 23.608437] BUG: Bad rss-counter state mm:0000000016fee23b type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 23.971073] ================================================================== [ 23.971633] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.972216] Read of size 8 at addr ffff88801a24b058 by task sshd/219 [ 23.972684] [ 23.972818] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.973346] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.973939] Call Trace: [ 23.974136] [ 23.974310] dump_stack_lvl+0x91/0xf0 [ 23.974611] print_report+0xcc/0x620 [ 23.974908] ? __virt_addr_valid+0x102/0x340 [ 23.975243] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.975620] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.975996] kasan_report+0xbe/0xf0 [ 23.976299] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.976677] vma_interval_tree_remove+0xc75/0xec0 [ 23.977043] vma_prepare+0xc54/0x11a0 [ 23.977335] __split_vma+0x5af/0x950 [ 23.977626] ? __pfx___split_vma+0x10/0x10 [ 23.977951] ? find_held_lock+0x2c/0x110 [ 23.978269] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.978614] ? lock_is_held_type+0x9f/0x120 [ 23.978943] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.979312] ? mtree_range_walk+0x632/0x900 [ 23.979662] ? mas_walk+0x5c7/0x7c0 [ 23.979961] do_vmi_munmap+0x1f1/0x2b0 [ 23.980278] mmap_region+0x1f9/0x2660 [ 23.980572] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.980883] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.981318] ? __pfx_lock_acquire+0x10/0x10 [ 23.981642] ? __pfx_mmap_region+0x10/0x10 [ 23.981971] ? security_mmap_addr+0x7d/0xa0 [ 23.982298] ? get_unmapped_area+0x1f5/0x3f0 [ 23.982632] do_mmap+0x854/0xf00 [ 23.982897] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.983195] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.983533] ksys_mmap_pgoff+0x3af/0x500 [ 23.983841] do_syscall_64+0x3f/0x90 [ 23.984141] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.984537] RIP: 0033:0x7fec61072d82 [ 23.984551] 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 [ 23.984568] RSP: 002b:00007ffcc8b5da48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.984585] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fec61072d82 [ 23.984597] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fec604ac000 [ 23.984609] RBP: 00007fec604ac000 R08: 0000000000000009 R09: 0000000000001000 [ 23.984620] R10: 0000000000000812 R11: 0000000000000206 R12: 00005574ee24cf70 [ 23.984631] R13: 00007ffcc8b5da60 R14: 00007ffcc8b5da90 R15: 00007ffcc8b5ddf0 [ 23.984649] [ 23.984654] [ 23.984656] Allocated by task 206: [ 23.984663] kasan_save_stack+0x22/0x50 [ 23.984688] kasan_set_track+0x25/0x30 [ 23.984712] __kasan_slab_alloc+0x59/0x70 [ 23.984737] kmem_cache_alloc+0x16b/0x370 [ 23.984758] vm_area_dup+0x20/0x160 [ 23.984775] __split_vma+0x170/0x950 [ 23.984793] split_vma+0xc6/0x110 [ 23.984811] mprotect_fixup+0x8d2/0xb30 [ 23.984834] do_mprotect_pkey+0x87e/0xd40 [ 23.984858] __x64_sys_mprotect+0x78/0xc0 [ 23.984882] do_syscall_64+0x3f/0x90 [ 23.984905] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.984933] [ 23.984935] Freed by task 203: [ 23.984942] kasan_save_stack+0x22/0x50 [ 23.984966] kasan_set_track+0x25/0x30 [ 23.984989] kasan_save_free_info+0x2b/0x50 [ 23.985009] __kasan_slab_free+0x10a/0x190 [ 23.985034] kmem_cache_free+0x10d/0x4d0 [ 23.985055] rcu_core+0x8c8/0x2860 [ 23.985071] __do_softirq+0x1b7/0x7d4 [ 23.985091] [ 23.985093] Last potentially related work creation: [ 23.985098] kasan_save_stack+0x22/0x50 [ 23.985122] __kasan_record_aux_stack+0x8e/0xa0 [ 23.985140] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.985167] remove_vma+0x139/0x170 [ 23.985181] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.985201] do_vmi_munmap+0x1f1/0x2b0 [ 23.985220] __vm_munmap+0x138/0x3a0 [ 23.985238] __x64_sys_munmap+0x59/0x80 [ 23.985258] do_syscall_64+0x3f/0x90 [ 23.985281] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.985309] [ 23.985311] The buggy address belongs to the object at ffff88801a24b000 [ 23.985311] which belongs to the cache vm_area_struct of size 168 [ 23.985325] The buggy address is located 88 bytes inside of [ 23.985325] freed 168-byte region [ffff88801a24b000, ffff88801a24b0a8) [ 23.985342] [ 23.985344] The buggy address belongs to the physical page: [ 23.985349] page:0000000017bb11dd refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a24b [ 23.985368] memcg:ffff88801a1d4e01 [ 23.985373] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.985387] page_type: 0xffffffff() [ 23.985402] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 23.985418] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a1d4e01 [ 23.985427] page dumped because: kasan: bad access detected [ 23.985433] [ 23.985435] Memory state around the buggy address: [ 23.985443] ffff88801a24af00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 23.985454] ffff88801a24af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.985465] >ffff88801a24b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.985474] ^ [ 23.985482] ffff88801a24b080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 23.985493] ffff88801a24b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.985502] ================================================================== [ 23.985596] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 25.854250] BUG: Bad rss-counter state mm:0000000075ff6f27 type:MM_FILEPAGES val:33 [ 25.855148] BUG: Bad rss-counter state mm:0000000075ff6f27 type:MM_ANONPAGES val:22 [ 26.347258] BUG: Bad rss-counter state mm:000000007a72aee6 type:MM_FILEPAGES val:33 [ 26.348465] BUG: Bad rss-counter state mm:000000007a72aee6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:58045' (ECDSA) to the list of known hosts. [ 26.454876] general protection fault, probably for non-canonical address 0xe0d87c23e0000019: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 26.456203] KASAN: maybe wild-memory-access in range [0x06c4011f000000c8-0x06c4011f000000cf] [ 26.457142] CPU: 1 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230620 #1 [ 26.458104] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.459023] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 26.459647] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 26.461734] RSP: 0018:ffff88800da478a8 EFLAGS: 00010213 [ 26.462389] RAX: ffff8880199f4140 RBX: ffff88800d91a780 RCX: ffffffff844d49f9 [ 26.463231] RDX: 00d88023e0000019 RSI: 0000000000000008 RDI: ffff888018d7e588 [ 26.464088] RBP: ffff88800f66a500 R08: ffff888018d7e588 R09: 0000000000000000 [ 26.464933] R10: 0000000000000000 R11: 00000000000b6a61 R12: ffff888018d7e580 [ 26.465776] R13: dffffc0000000000 R14: 06c4011f000000ce R15: ffffffff816e6340 [ 26.466650] FS: 00007fce92a94900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 26.467621] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.468353] CR2: 00007fce92a45000 CR3: 000000000f142000 CR4: 0000000000350ee0 [ 26.469209] Call Trace: [ 26.469529] [ 26.469816] ? die_addr+0x3c/0xa0 [ 26.470268] ? exc_general_protection+0x125/0x220 [ 26.470905] ? asm_exc_general_protection+0x26/0x30 [ 26.471546] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 26.472299] ? __rb_insert_augmented+0x5e9/0x8b0 [ 26.472912] ? __rb_insert_augmented+0x9d/0x8b0 [ 26.473505] ? __rb_insert_augmented+0x5e9/0x8b0 [ 26.474099] vma_prepare+0xa1a/0x11a0 [ 26.474578] __split_vma+0x5af/0x950 [ 26.475048] ? __pfx___split_vma+0x10/0x10 [ 26.475578] ? lock_acquire+0x434/0x4c0 [ 26.476105] do_vmi_align_munmap+0x361/0x11f0 [ 26.476680] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.477277] ? mtree_range_walk+0x632/0x900 [ 26.477830] ? mas_walk+0x5c7/0x7c0 [ 26.478301] do_vmi_munmap+0x1f1/0x2b0 [ 26.478792] mmap_region+0x1f9/0x2660 [ 26.479271] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.479975] ? __pfx_lock_acquire+0x10/0x10 [ 26.480513] ? __pfx_mmap_region+0x10/0x10 [ 26.481063] ? security_mmap_addr+0x7d/0xa0 [ 26.481616] ? get_unmapped_area+0x1f5/0x3f0 [ 26.482186] do_mmap+0x854/0xf00 [ 26.482643] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.483154] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.483739] ksys_mmap_pgoff+0x3af/0x500 [ 26.484288] do_syscall_64+0x3f/0x90 [ 26.484785] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.485465] RIP: 0033:0x7fce93626d82 [ 26.485941] 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 [ 26.488174] RSP: 002b:00007ffe1c19cbc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.489127] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fce93626d82 [ 26.490011] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fce92a40000 [ 26.490899] RBP: 00007fce92a40000 R08: 0000000000000008 R09: 0000000000001000 [ 26.491775] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c7eb21c630 [ 26.492685] R13: 00007ffe1c19cbe0 R14: 00007ffe1c19cc10 R15: 00007ffe1c19cf70 [ 26.493578] [ 26.493882] Modules linked in: [ 26.494574] ---[ end trace 0000000000000000 ]--- [ 26.495218] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 26.495906] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 26.498493] RSP: 0018:ffff88800da478a8 EFLAGS: 00010213 [ 26.499381] RAX: ffff8880199f4140 RBX: ffff88800d91a780 RCX: ffffffff844d49f9 [ 26.500517] RDX: 00d88023e0000019 RSI: 0000000000000008 RDI: ffff888018d7e588 [ 26.501610] RBP: ffff88800f66a500 R08: ffff888018d7e588 R09: 0000000000000000 [ 26.502635] R10: 0000000000000000 R11: 00000000000b6a61 R12: ffff888018d7e580 [ 26.503722] R13: dffffc0000000000 R14: 06c4011f000000ce R15: ffffffff816e6340 [ 26.504721] FS: 00007fce92a94900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 26.505753] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.506518] CR2: 00007fce92a45000 CR3: 000000000f142000 CR4: 0000000000350ee0 VM DIAGNOSIS: 04:14:23 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff11003394fbd RCX=1ffff11003394ff9 RDX=00007fffba453174 RSI=00007fffba453178 RDI=0000000000000009 RBP=0000000000000009 RSP=ffff888019ca7de0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3d357 R11=0000000000000000 R12=ffff888019ca7f58 R13=00007fffba453178 R14=00007fffba453174 R15=dffffc0000000000 RIP=ffffffff814c0864 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 00007f285e6be900 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=00007f285ec75618 CR3=0000000018c0c000 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=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 info registers vcpu 1 RAX=ffffffff8180ef51 RBX=ffffffff85dfe518 RCX=ffffffff8180effd RDX=0000000000000000 RSI=ffffffff861395f4 RDI=ffffffff85dfe50c RBP=ffffffff85dfe51c RSP=ffff88800fb47468 R8 =ffffffff861395f4 R9 =ffff88800fb47560 R10=0000000000038001 R11=0000000000020ed2 R12=ffffffff85dfe528 R13=ffffffff85dfe50c R14=ffffffff85dfe518 R15=dffffc0000000000 RIP=ffffffff8112fc55 RFL=00000216 [----AP-] 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 00007f179ac41700 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=00007f9f5f35e2e0 CR3=000000000c6f6000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732033323a3431 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383335 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000