syzbot


usb-testing boot error: general protection fault in kvmalloc_node

Status: upstream: reported on 2022/09/05 14:35
Reported-by: syzbot+24e8438a720679b9b878@syzkaller.appspotmail.com
First crash: 93d, last: 93d

Sample crash report:
general protection fault, probably for non-canonical address 0xffff0fff00000800: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0xfff89ff800004000-0xfff89ff800004007]
CPU: 1 PID: 1149 Comm: mkdir Not tainted 6.0.0-rc1-syzkaller-00047-g10174220f55a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:freelist_dereference mm/slub.c:347 [inline]
RIP: 0010:get_freepointer mm/slub.c:354 [inline]
RIP: 0010:get_freepointer_safe mm/slub.c:368 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:3211 [inline]
RIP: 0010:__kmalloc_node+0x1dd/0x360 mm/slub.c:4468
Code: 48 83 c4 18 44 89 e1 4c 89 ea 5b 4c 89 fe 48 89 ef 5d 41 5c 41 5d 41 5e 41 5f e9 6e 55 00 00 48 8b 7d 00 8b 4d 28 40 f6 c7 0f <48> 8b 1c 08 0f 85 3d 01 00 00 48 8d 4a 08 65 48 0f c7 0f 0f 94 c0
RSP: 0018:ffffc900004e7c20 EFLAGS: 00010246
RAX: ffff0fff00000000 RBX: 0000000000400cc0 RCX: 0000000000000800
RDX: 0000000000000041 RSI: 0000000000400cc0 RDI: 000000000003b880
RBP: ffff88810004c280 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000400cc0
R13: 0000000000001000 R14: 0000000000000000 R15: ffffffff81632b1e
FS:  00007fd7fef3f800(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7ff039410 CR3: 000000010f2f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kmalloc_node include/linux/slab.h:623 [inline]
 kvmalloc_node+0x3e/0x190 mm/util.c:613
 kvmalloc include/linux/slab.h:750 [inline]
 seq_buf_alloc fs/seq_file.c:38 [inline]
 seq_read_iter+0x7f7/0x1280 fs/seq_file.c:210
 proc_reg_read_iter+0x1fb/0x2d0 fs/proc/inode.c:305
 call_read_iter include/linux/fs.h:2181 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x67d/0x930 fs/read_write.c:470
 ksys_read+0x127/0x250 fs/read_write.c:607
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd7ff0cb8fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007fff62d03468 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055cc8ec572a0 RCX: 00007fd7ff0cb8fe
RDX: 0000000000000400 RSI: 000055cc8ec57500 RDI: 0000000000000003
RBP: 00007fd7ff198380 R08: 0000000000000003 R09: 00007fd7ff19ba60
R10: 000000000000005d R11: 0000000000000246 R12: 00007fff62d03530
R13: 0000000000000d68 R14: 00007fd7ff197780 R15: 0000000000000d68
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:freelist_dereference mm/slub.c:347 [inline]
RIP: 0010:get_freepointer mm/slub.c:354 [inline]
RIP: 0010:get_freepointer_safe mm/slub.c:368 [inline]
RIP: 0010:slab_alloc_node mm/slub.c:3211 [inline]
RIP: 0010:__kmalloc_node+0x1dd/0x360 mm/slub.c:4468
Code: 48 83 c4 18 44 89 e1 4c 89 ea 5b 4c 89 fe 48 89 ef 5d 41 5c 41 5d 41 5e 41 5f e9 6e 55 00 00 48 8b 7d 00 8b 4d 28 40 f6 c7 0f <48> 8b 1c 08 0f 85 3d 01 00 00 48 8d 4a 08 65 48 0f c7 0f 0f 94 c0
RSP: 0018:ffffc900004e7c20 EFLAGS: 00010246
RAX: ffff0fff00000000 RBX: 0000000000400cc0 RCX: 0000000000000800
RDX: 0000000000000041 RSI: 0000000000400cc0 RDI: 000000000003b880
RBP: ffff88810004c280 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000400cc0
R13: 0000000000001000 R14: 0000000000000000 R15: ffffffff81632b1e
FS:  00007fd7fef3f800(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7ff039410 CR3: 000000010f2f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 83 c4 18          	add    $0x18,%rsp
   4:	44 89 e1             	mov    %r12d,%ecx
   7:	4c 89 ea             	mov    %r13,%rdx
   a:	5b                   	pop    %rbx
   b:	4c 89 fe             	mov    %r15,%rsi
   e:	48 89 ef             	mov    %rbp,%rdi
  11:	5d                   	pop    %rbp
  12:	41 5c                	pop    %r12
  14:	41 5d                	pop    %r13
  16:	41 5e                	pop    %r14
  18:	41 5f                	pop    %r15
  1a:	e9 6e 55 00 00       	jmpq   0x558d
  1f:	48 8b 7d 00          	mov    0x0(%rbp),%rdi
  23:	8b 4d 28             	mov    0x28(%rbp),%ecx
  26:	40 f6 c7 0f          	test   $0xf,%dil
* 2a:	48 8b 1c 08          	mov    (%rax,%rcx,1),%rbx <-- trapping instruction
  2e:	0f 85 3d 01 00 00    	jne    0x171
  34:	48 8d 4a 08          	lea    0x8(%rdx),%rcx
  38:	65 48 0f c7 0f       	cmpxchg16b %gs:(%rdi)
  3d:	0f 94 c0             	sete   %al

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-usb 2022/09/01 14:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 10174220f55a 86c46e46 .config log report usb-testing boot error: general protection fault in kvmalloc_node
* Struck through repros no longer work on HEAD.