RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f7e2f9e0fc9 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 RBP: 00007ffecbd015f0 R08: 0000000000000001 R09: 00007f7e2fa2b11e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 365 Comm: syz-executor859 Not tainted 5.10.83-syzkaller-00311-g6e6898e23cab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:klist_iter_exit+0x2b/0x100 lib/klist.c:313 Code: 48 89 e5 41 57 41 56 41 55 41 54 53 50 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 d0 7b fa fe 49 83 c7 08 4d 89 fd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 4c 89 ff e8 45 50 34 ff 4d 8b 37 4d 85 f6 RSP: 0018:ffffc90000bf71f8 EFLAGS: 00010202 RAX: ffffffff82726000 RBX: 0000000000000000 RCX: ffff8881073a4f00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffffc90000bf7228 R08: dffffc0000000000 R09: fffff5200017ee3d R10: fffff5200017ee3d R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: ffff888101b89398 R15: 0000000000000008 FS: 00005555572e63c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000100 CR3: 000000011ccb8000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: class_dev_iter_exit+0x15/0x20 drivers/base/class.c:330 nfc_device_iter_exit net/nfc/nfc.h:121 [inline] nfc_genl_dump_devices_done+0x3b/0x50 net/nfc/netlink.c:639 genl_lock_done+0x84/0xd0 net/netlink/genetlink.c:636 netlink_dump+0x90a/0xc30 net/netlink/af_netlink.c:2311 __netlink_dump_start+0x5ba/0x7d0 net/netlink/af_netlink.c:2381 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:686 [inline] genl_family_rcv_msg net/netlink/genetlink.c:780 [inline] genl_rcv_msg+0xbe1/0x1480 net/netlink/genetlink.c:800 netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2502 genl_rcv+0x28/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x814/0x9f0 net/netlink/af_netlink.c:1337 netlink_sendmsg+0xa20/0xe00 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x5b9/0x910 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmsg+0x384/0x470 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2437 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f7e2f9e0fc9 Code: 28 c3 e8 7a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c4 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffecbd015d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f7e2f9e0fc9 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 RBP: 00007ffecbd015f0 R08: 0000000000000001 R09: 00007f7e2fa2b11e R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 Modules linked in: ---[ end trace 776c3cf45fec02bc ]--- RIP: 0010:klist_iter_exit+0x2b/0x100 lib/klist.c:313 Code: 48 89 e5 41 57 41 56 41 55 41 54 53 50 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 d0 7b fa fe 49 83 c7 08 4d 89 fd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 4c 89 ff e8 45 50 34 ff 4d 8b 37 4d 85 f6 RSP: 0018:ffffc90000bf71f8 EFLAGS: 00010202 RAX: ffffffff82726000 RBX: 0000000000000000 RCX: ffff8881073a4f00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffffc90000bf7228 R08: dffffc0000000000 R09: fffff5200017ee3d R10: fffff5200017ee3d R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: ffff888101b89398 R15: 0000000000000008 FS: 00005555572e63c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000100 CR3: 000000011ccb8000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 e5 mov %rsp,%rbp 3: 41 57 push %r15 5: 41 56 push %r14 7: 41 55 push %r13 9: 41 54 push %r12 b: 53 push %rbx c: 50 push %rax d: 49 89 ff mov %rdi,%r15 10: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 17: fc ff df 1a: e8 d0 7b fa fe callq 0xfefa7bef 1f: 49 83 c7 08 add $0x8,%r15 23: 4d 89 fd mov %r15,%r13 26: 49 c1 ed 03 shr $0x3,%r13 * 2a: 43 80 7c 25 00 00 cmpb $0x0,0x0(%r13,%r12,1) <-- trapping instruction 30: 74 08 je 0x3a 32: 4c 89 ff mov %r15,%rdi 35: e8 45 50 34 ff callq 0xff34507f 3a: 4d 8b 37 mov (%r15),%r14 3d: 4d 85 f6 test %r14,%r14