syzbot


general protection fault in trace_hardirqs_on_thunk

Status: auto-closed as invalid on 2020/11/27 16:02
Reported-by: syzbot+170c3bfa7fd177e3a989@syzkaller.appspotmail.com
First crash: 694d, last: 694d

Sample crash report:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 23633 Comm: systemd-udevd Not tainted 4.14.190-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880639862c0 task.stack: ffff888027c80000
RIP: 0010:trace_hardirqs_on_thunk+0x1/0x1c
RSP: 0018:ffff888027c87aa8 EFLAGS: 00010087
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1100c730d69
RDX: 0000000000000000 RSI: 1ffff11004f90f48 RDI: ffff888063986900
RBP: 0000000000000000 R08: ffffffff8a0790e0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007ff88f98a8c0(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
kasan: CONFIG_KASAN_INLINE enabled
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kasan: GPF could be caused by NULL-ptr deref or user memory access
CR2: 0000558ee780f000 CR3: 000000006164e000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 retint_kernel+0x2d/0x2d
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff888027c87b60 EFLAGS: 00010206
RAX: ffffed1013ff3800 RBX: 0000000000001000 RCX: 0000000000000628
RDX: 0000000000001000 RSI: ffff88809ff9b9d8 RDI: 0000558ee780f000
RBP: 0000558ee780e628 R08: 0000000000000000 R09: ffffed1013ff37ff
R10: ffff88809ff9bfff R11: 0000000000000000 R12: ffff88809ff9b000
R13: 00007ffffffff000 R14: 0000558ee780f628 R15: ffff888027c87d40
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:112 [inline]
 copyout+0x99/0xc0 lib/iov_iter.c:137
 copy_page_to_iter_iovec lib/iov_iter.c:206 [inline]
 copy_page_to_iter+0x324/0xca0 lib/iov_iter.c:723
 generic_file_buffered_read mm/filemap.c:2096 [inline]
 generic_file_read_iter+0x94f/0x21c0 mm/filemap.c:2273
 blkdev_read_iter+0xfe/0x160 fs/block_dev.c:1936
 call_read_iter include/linux/fs.h:1772 [inline]
 new_sync_read fs/read_write.c:401 [inline]
 __vfs_read+0x449/0x620 fs/read_write.c:413
 vfs_read+0x139/0x340 fs/read_write.c:447
 SYSC_read fs/read_write.c:574 [inline]
 SyS_read+0xf2/0x210 fs/read_write.c:567
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7ff88ead1210
RSP: 002b:00007ffe230f2f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000558ee77e9600 RCX: 00007ff88ead1210
RDX: 0000000000040000 RSI: 0000558ee77e9628 RDI: 000000000000000f
RBP: 0000558ee76a5ea0 R08: 0000000000000003 R09: 0000000000040030
R10: 0000558ee77e9618 R11: 0000000000000246 R12: 00000000080c0000
R13: 0000000008100000 R14: 0000558ee76a5ef0 R15: 0000000000040000
Code: 60 3d a0 86 48 f7 f1 b9 88 13 00 00 49 89 d0 4c 89 e0 31 d2 48 f7 f1 4c 89 e1 48 89 c6 4c 89 c2 e8 4b fa 49 00 e9 a8 f3 ff ff 55 <00> 00 ff 57 56 52 51 50 41 50 41 51 41 52 41 53 48 8b 7d 08 e8 
RIP: trace_hardirqs_on_thunk+0x1/0x1c RSP: ffff888027c87aa8
---[ end trace 577d19c6e44e777e ]---
general protection fault: 0000 [#2] PREEMPT SMP KASAN

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/07/30 16:01 linux-4.14.y e5a54aa2d312 b0947553 .config log report