Hello, syzbot found the following issue on: HEAD commit: 4a9350597aff Merge tag 'sound-fix-6.0-rc1' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=169a15dd080000 kernel config: https://syzkaller.appspot.com/x/.config?x=4757943c2b26daff dashboard link: https://syzkaller.appspot.com/bug?extid=0bd8bc660debfdbd190d compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0bd8bc660debfdbd190d@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xffff0000000001a0: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xfff8200000000d00-0xfff8200000000d07] CPU: 1 PID: 46 Comm: kworker/u4:3 Not tainted 5.19.0-syzkaller-14090-g4a9350597aff #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: events_unbound call_usermodehelper_exec_work RIP: 0010:slab_alloc mm/slub.c:3251 [inline] RIP: 0010:__kmem_cache_alloc_lru mm/slub.c:3258 [inline] RIP: 0010:kmem_cache_alloc+0x12d/0x310 mm/slub.c:3268 Code: 84 1c 01 00 00 48 83 78 10 00 0f 84 11 01 00 00 49 8b 3f 40 f6 c7 0f 0f 85 e3 01 00 00 45 84 c0 0f 84 dc 01 00 00 41 8b 47 28 <49> 8b 5c 05 00 48 8d 4a 08 4c 89 e8 65 48 0f c7 0f 0f 94 c0 a8 01 RSP: 0000:ffffc90000b775c8 EFLAGS: 00010202 RAX: 00000000000001a0 RBX: 0000000000000cc0 RCX: 0000000000000000 RDX: 0000000000000b51 RSI: 0000000000000cc0 RDI: 0000000000040a00 RBP: ffffffff81f3d035 R08: dffffc0000000001 R09: fffffbfff1c4ad5e R10: fffffbfff1c4ad5e R11: 1ffffffff1c4ad5d R12: ffffc90000b77720 R13: ffff000000000000 R14: ffffffff81f3d035 R15: ffff888140006640 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000ca8e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> dup_fd+0x75/0xb90 fs/file.c:324 copy_files+0xe6/0x200 kernel/fork.c:1623 copy_process+0x18b6/0x4010 kernel/fork.c:2244 kernel_clone+0x22f/0x7a0 kernel/fork.c:2673 user_mode_thread+0x12d/0x190 kernel/fork.c:2742 call_usermodehelper_exec_work+0x57/0x220 kernel/umh.c:174 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 </TASK> Modules linked in: ---------------- Code disassembly (best guess): 0: 84 1c 01 test %bl,(%rcx,%rax,1) 3: 00 00 add %al,(%rax) 5: 48 83 78 10 00 cmpq $0x0,0x10(%rax) a: 0f 84 11 01 00 00 je 0x121 10: 49 8b 3f mov (%r15),%rdi 13: 40 f6 c7 0f test $0xf,%dil 17: 0f 85 e3 01 00 00 jne 0x200 1d: 45 84 c0 test %r8b,%r8b 20: 0f 84 dc 01 00 00 je 0x202 26: 41 8b 47 28 mov 0x28(%r15),%eax * 2a: 49 8b 5c 05 00 mov 0x0(%r13,%rax,1),%rbx <-- trapping instruction 2f: 48 8d 4a 08 lea 0x8(%rdx),%rcx 33: 4c 89 e8 mov %r13,%rax 36: 65 48 0f c7 0f cmpxchg16b %gs:(%rdi) 3b: 0f 94 c0 sete %al 3e: a8 01 test $0x1,%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.
