Hello, syzbot found the following issue on: HEAD commit: 10174220f55a usb: reduce kernel log spam on driver registr.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=131ee98b080000 kernel config: https://syzkaller.appspot.com/x/.config?x=3cb39b084894e9a5 dashboard link: https://syzkaller.appspot.com/bug?extid=24e8438a720679b9b878 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/cc623f81ac2e/disk-10174220.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d582f7185db2/vmlinux-10174220.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+24e8438a720679b9b878@xxxxxxxxxxxxxxxxxxxxxxxxx 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 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
