[syzbot] [net?] [nfs?] BUG: stack guard page was hit in nfsctl_transaction_write
syzbot <[email protected]>
| Newsgroups | org.kernel.vger.netdev,org.kernel.vger.linux-kernel,org.kernel.vger.linux-nfs |
|---|---|
| Message-ID | <[email protected]> |
Hello, syzbot found the following issue on: HEAD commit: d58772d8520c Merge tag 'regmap-fix-v7.2-rc7' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12aa7879580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8a233ed2ce9a8096 dashboard link: https://syzkaller.appspot.com/bug?extid=54cdc566f64abf51b7f1 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15c12a9e580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=133492c6580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-d58772d8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a4e864f7b043/vmlinux-d58772d8.xz kernel image: https://storage.googleapis.com/syzbot-assets/f485f29307dc/bzImage-d58772d8.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: [email protected] BUG: TASK stack guard page was hit at ffffc900037d7ff8 (stack is ffffc900037d8000..ffffc900037e0000) Oops: stack guard page: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5932 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:kasan_check_range+0x18/0x1e0 mm/kasan/generic.c:199 Code: 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 85 f6 0f 84 7a 01 00 00 48 89 f8 41 54 41 89 d0 48 01 f0 <55> 53 0f 82 e6 00 00 00 eb 0f cc cc cc 48 b8 00 00 00 00 00 00 00 RSP: 0018:ffffc900037d8000 EFLAGS: 00010286 RAX: ffffffff9121bad8 RBX: ffff88804d901980 RCX: ffffffff8acf82f0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9121bad0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000007 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888042ffb000 R13: ffff888050e43f98 R14: ffff888042ffb038 R15: ffff88804d901980 FS: 0000000000000000(0000) GS:ffff888096bf3000(0063) knlGS:00000000580e8480 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffc900037d7ff8 CR3: 000000005453c000 CR4: 0000000000352ef0 Call Trace: <TASK> instrument_atomic_read include/linux/instrumented.h:82 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] cpumask_test_cpu include/linux/cpumask.h:651 [inline] cpu_online include/linux/cpumask.h:1233 [inline] trace_svcsock_write_space include/trace/events/sunrpc.h:2317 [inline] svc_write_space+0x90/0x2b0 net/sunrpc/svcsock.c:429 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 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svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_sock_setbufsize+0x18d/0x220 net/sunrpc/svcsock.c:386 svc_udp_init net/sunrpc/svcsock.c:854 [inline] svc_setup_socket+0xb2f/0x1090 net/sunrpc/svcsock.c:1498 svc_addsock+0x2fd/0x760 net/sunrpc/svcsock.c:1547 __write_ports_addfd fs/nfsd/nfsctl.c:742 [inline] __write_ports fs/nfsd/nfsctl.c:805 [inline] write_ports+0xa5b/0xcc0 fs/nfsd/nfsctl.c:861 nfsctl_transaction_write+0x106/0x1a0 fs/nfsd/nfsctl.c:112 vfs_write+0x2aa/0x1050 fs/read_write.c:685 ksys_write+0x12a/0x250 fs/read_write.c:739 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe7/0x970 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f45fec Code: Unable to access opcode bytes at 0xf7f45fc2. RSP: 002b:00000000ff85078c EFLAGS: 00000296 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000080000240 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kasan_check_range+0x18/0x1e0 mm/kasan/generic.c:199 Code: 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 85 f6 0f 84 7a 01 00 00 48 89 f8 41 54 41 89 d0 48 01 f0 <55> 53 0f 82 e6 00 00 00 eb 0f cc cc cc 48 b8 00 00 00 00 00 00 00 RSP: 0018:ffffc900037d8000 EFLAGS: 00010286 RAX: ffffffff9121bad8 RBX: ffff88804d901980 RCX: ffffffff8acf82f0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9121bad0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000007 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888042ffb000 R13: ffff888050e43f98 R14: ffff888042ffb038 R15: ffff88804d901980 FS: 0000000000000000(0000) GS:ffff888096bf3000(0063) knlGS:00000000580e8480 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7f46000 CR3: 000000005453c000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 40 00 90 90 90 90 90 rex add %dl,-0x6f6f6f70(%rax) 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 0f 1f 40 d6 nopl -0x2a(%rax) 16: 48 85 f6 test %rsi,%rsi 19: 0f 84 7a 01 00 00 je 0x199 1f: 48 89 f8 mov %rdi,%rax 22: 41 54 push %r12 24: 41 89 d0 mov %edx,%r8d 27: 48 01 f0 add %rsi,%rax * 2a: 55 push %rbp <-- trapping instruction 2b: 53 push %rbx 2c: 0f 82 e6 00 00 00 jb 0x118 32: eb 0f jmp 0x43 34: cc int3 35: cc int3 36: cc int3 37: 48 rex.W 38: b8 00 00 00 00 mov $0x0,%eax 3d: 00 00 add %al,(%rax) --- This report is generated by a bot. 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