Hello, syzbot found the following issue on: HEAD commit: 568035b01cfb Linux 6.0-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17b23aa5080000 kernel config: https://syzkaller.appspot.com/x/.config?x=3b9175e0879a7749 dashboard link: https://syzkaller.appspot.com/bug?extid=9ada839c852179f13999 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, 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+9ada839c852179f13999@xxxxxxxxxxxxxxxxxxxxxxxxx scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6 general protection fault, probably for non-canonical address 0xffff000000000800: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xfff8200000004000-0xfff8200000004007] CPU: 1 PID: 56 Comm: kworker/u4:4 Not tainted 6.0.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: events_unbound async_run_entry_fn 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:slab_alloc mm/slub.c:3251 [inline] RIP: 0010:__kmalloc+0x113/0x340 mm/slub.c:4420 Code: 8b 51 08 48 8b 01 48 83 79 10 00 48 89 44 24 08 0f 84 18 02 00 00 48 85 c0 0f 84 0f 02 00 00 48 8b 7d 00 8b 4d 28 40 f6 c7 0f <48> 8b 1c 08 0f 85 1b 02 00 00 48 8d 4a 08 65 48 0f c7 0f 0f 94 c0 RSP: 0018:ffffc900015777f8 EFLAGS: 00010246 RAX: ffff000000000000 RBX: ffff88801bd64000 RCX: 0000000000000800 RDX: 0000000000005d09 RSI: 0000000000000dc0 RDI: 000000000003dce0 RBP: ffff888011842140 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000dc0 R13: 0000000000000000 R14: 0000000000000cb8 R15: 0000000000000dc0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000bc8e000 CR4: 0000000000350ee0 Call Trace: <TASK> kmalloc include/linux/slab.h:605 [inline] kzalloc include/linux/slab.h:733 [inline] scsi_alloc_sdev+0x109/0xcc0 drivers/scsi/scsi_scan.c:287 scsi_probe_and_add_lun+0x22be/0x3660 drivers/scsi/scsi_scan.c:1191 __scsi_scan_target+0x21f/0xdb0 drivers/scsi/scsi_scan.c:1673 scsi_scan_channel drivers/scsi/scsi_scan.c:1761 [inline] scsi_scan_channel+0x148/0x1e0 drivers/scsi/scsi_scan.c:1737 scsi_scan_host_selected+0x2df/0x3b0 drivers/scsi/scsi_scan.c:1790 do_scsi_scan_host+0x1e8/0x260 drivers/scsi/scsi_scan.c:1929 do_scan_async+0x3e/0x500 drivers/scsi/scsi_scan.c:1939 async_run_entry_fn+0x98/0x530 kernel/async.c:127 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> Modules linked in: ---------------- Code disassembly (best guess): 0: 8b 51 08 mov 0x8(%rcx),%edx 3: 48 8b 01 mov (%rcx),%rax 6: 48 83 79 10 00 cmpq $0x0,0x10(%rcx) b: 48 89 44 24 08 mov %rax,0x8(%rsp) 10: 0f 84 18 02 00 00 je 0x22e 16: 48 85 c0 test %rax,%rax 19: 0f 84 0f 02 00 00 je 0x22e 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 1b 02 00 00 jne 0x24f 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.
