9pnet_fd: Insufficient options for proto=fd stack segment: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 9077 Comm: syz-executor.5 Tainted: G B 5.17.0-rc5-next-20220225 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:kmem_cache_free_bulk+0x83/0xb60 Code: da 0f 82 c1 0a 00 00 48 c7 c5 00 00 00 80 48 2b 2d c2 a4 7b 03 48 01 d5 48 8b 3d a8 a4 7b 03 48 c1 ed 0c 48 c1 e5 06 48 01 fd <48> 8b 55 08 f6 c2 01 0f 85 34 05 00 00 0f 1f 44 00 00 48 8b 55 00 RSP: 0018:ffff88801d2bf960 EFLAGS: 00010203 RAX: d840022000002375 RBX: 0000000080000000 RCX: 0000000000000000 RDX: d840022080002375 RSI: ffff88800faf4a18 RDI: ffffea0000000000 RBP: 0360ebe680000080 R08: 0000000000000000 R09: 0000000000000075 R10: ffffffff82122ac2 R11: 0000000000000000 R12: ffff88800faf4dc0 R13: ffff88800faf4b00 R14: dffffc0000000000 R15: 0000000000000075 FS: 0000555556cce400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562e87738b48 CR3: 000000001f746000 CR4: 0000000000350ef0 Call Trace: mas_destroy+0x380/0x8d0 mas_store_gfp+0xed/0x1f0 vma_store+0x145/0x360 __vma_adjust+0x580/0x1510 __split_vma+0x452/0x540 split_vma+0x9f/0xe0 mprotect_fixup+0x637/0x8d0 do_mprotect_pkey+0x5d6/0xa10 __x64_sys_mprotect+0x74/0xb0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5f2d849c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd6eb099c8 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 0000000000021000 RCX: 00007f5f2d849c27 RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f5f2ad1c000 RBP: 00007ffd6eb09aa0 R08: 00000000ffffffff R09: 00007f5f2ad3b700 R10: 0000000000020022 R11: 0000000000000206 R12: 00007ffd6eb09bb0 R13: 00007f5f2ad3b700 R14: 0000000000000000 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kmem_cache_free_bulk+0x83/0xb60 Code: da 0f 82 c1 0a 00 00 48 c7 c5 00 00 00 80 48 2b 2d c2 a4 7b 03 48 01 d5 48 8b 3d a8 a4 7b 03 48 c1 ed 0c 48 c1 e5 06 48 01 fd <48> 8b 55 08 f6 c2 01 0f 85 34 05 00 00 0f 1f 44 00 00 48 8b 55 00 RSP: 0018:ffff88801d2bf960 EFLAGS: 00010203 RAX: d840022000002375 RBX: 0000000080000000 RCX: 0000000000000000 RDX: d840022080002375 RSI: ffff88800faf4a18 RDI: ffffea0000000000 RBP: 0360ebe680000080 R08: 0000000000000000 R09: 0000000000000075 R10: ffffffff82122ac2 R11: 0000000000000000 R12: ffff88800faf4dc0 R13: ffff88800faf4b00 R14: dffffc0000000000 R15: 0000000000000075 FS: 0000555556cce400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562e87738b48 CR3: 000000001f746000 CR4: 0000000000350ef0 audit: type=1326 audit(1646014330.249:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=9140 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7a2b94ab19 code=0x0 audit: type=1326 audit(1646014331.102:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=9140 comm="syz-executor.1" exe="/syz-executor.1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f7a2b94ab19 code=0x0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 0f 82 c1 0a 00 00 jb 0xac7 6: 48 c7 c5 00 00 00 80 mov $0xffffffff80000000,%rbp d: 48 2b 2d c2 a4 7b 03 sub 0x37ba4c2(%rip),%rbp # 0x37ba4d6 14: 48 01 d5 add %rdx,%rbp 17: 48 8b 3d a8 a4 7b 03 mov 0x37ba4a8(%rip),%rdi # 0x37ba4c6 1e: 48 c1 ed 0c shr $0xc,%rbp 22: 48 c1 e5 06 shl $0x6,%rbp 26: 48 01 fd add %rdi,%rbp * 29: 48 8b 55 08 mov 0x8(%rbp),%rdx <-- trapping instruction 2d: f6 c2 01 test $0x1,%dl 30: 0f 85 34 05 00 00 jne 0x56a 36: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3b: 48 8b 55 00 mov 0x0(%rbp),%rdx