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 CPU: 1 PID: 19877 Comm: kworker/1:7 Not tainted 4.20.0-rc2+ #182 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events smc_tcp_listen_work RIP: 0010:kernel_accept+0x5a/0x310 net/socket.c:3245 Code: 48 c1 ea 03 80 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 20 48 8d bb 50 03 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 14 02 00 00 48 8d 7b 10 0f b6 RSP: 0018:ffff8881952ff5b0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11036ba55e9 RDX: 000000000000006a RSI: ffffffff861837af RDI: 0000000000000350 RBP: ffff8881952ff5e0 R08: ffff8881b5d2af48 R09: 0000000000000006 R10: 0000000000000000 R11: ffff8881b5d2a680 R12: ffff8881952ff690 R13: ffff888178d62500 R14: 0000000000000000 R15: ffff8881b2a892b8 FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f147781cdb8 CR3: 00000001b9278000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'loop4' (00000000475d2db3): kobject_uevent_env Call Trace: smc_clcsock_accept net/smc/af_smc.c:834 [inline] smc_tcp_listen_work+0x218/0x11c0 net/smc/af_smc.c:1302 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153 kobject: 'loop4' (00000000475d2db3): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000990ae825): kobject_uevent_env kobject: 'loop5' (00000000990ae825): fill_kobj_path: path = '/devices/virtual/block/loop5' worker_thread+0x17f/0x1390 kernel/workqueue.c:2296 kobject: 'loop5' (00000000990ae825): kobject_uevent_env kobject: 'loop5' (00000000990ae825): fill_kobj_path: path = '/devices/virtual/block/loop5' kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: kobject: 'loop0' (000000008bd595f1): kobject_uevent_env kobject: 'loop0' (000000008bd595f1): fill_kobj_path: path = '/devices/virtual/block/loop0' ---[ end trace 740fa93c23a0f470 ]--- RIP: 0010:kernel_accept+0x5a/0x310 net/socket.c:3245 Code: 48 c1 ea 03 80 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 20 48 8d bb 50 03 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 14 02 00 00 48 8d 7b 10 0f b6 RSP: 0018:ffff8881952ff5b0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11036ba55e9 RDX: 000000000000006a RSI: ffffffff861837af RDI: 0000000000000350 RBP: ffff8881952ff5e0 R08: ffff8881b5d2af48 R09: 0000000000000006 kobject: 'loop0' (000000008bd595f1): kobject_uevent_env R10: 0000000000000000 R11: ffff8881b5d2a680 R12: ffff8881952ff690 R13: ffff888178d62500 R14: 0000000000000000 R15: ffff8881b2a892b8 FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'loop0' (000000008bd595f1): fill_kobj_path: path = '/devices/virtual/block/loop0' CR2: 00007ffc18d3dfcc CR3: 00000001c1f76000 CR4: 00000000001406e0 kobject: 'loop5' (00000000990ae825): kobject_uevent_env DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop5' (00000000990ae825): fill_kobj_path: path = '/devices/virtual/block/loop5' DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400