Hello, syzbot found the following issue on: HEAD commit: 7ebfc85e2cd7 Merge tag 'net-6.0-rc1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10a0a03d080000 kernel config: https://syzkaller.appspot.com/x/.config?x=924833c12349a8c0 dashboard link: https://syzkaller.appspot.com/bug?extid=ab99dc4c6e961eed8b8e compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ab99dc4c6e961eed8b8e@xxxxxxxxxxxxxxxxxxxxxxxxx infiniband syz2: set active infiniband syz2: added batadv_slave_1 BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 70431067 P4D 70431067 PUD 1f748067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6103 Comm: syz-executor.5 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc90003e6eb40 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88807caf65c8 RCX: ffffc9000b042000 RDX: 0000000000040000 RSI: ffffffff86d4bfcb RDI: 0000000000000000 RBP: ffffed100f95ecc8 R08: 0000000000000001 R09: ffff88807caf669f R10: ffffed100f95ecd3 R11: 0000000000000000 R12: 0000000000000000 R13: ffffed100f95ecc9 R14: ffff88807caf6640 R15: ffff88807caf6648 FS: 00007fa5efd65700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000006ec84000 CR4: 0000000000350ef0 Call Trace: <TASK> __rxe_do_task+0x56/0xc0 drivers/infiniband/sw/rxe/rxe_task.c:18 rxe_qp_do_cleanup+0x102/0x770 drivers/infiniband/sw/rxe/rxe_qp.c:800 execute_in_process_context+0x37/0x150 kernel/workqueue.c:3359 __rxe_cleanup+0x21a/0x400 drivers/infiniband/sw/rxe/rxe_pool.c:276 rxe_create_qp+0x2be/0x340 drivers/infiniband/sw/rxe/rxe_verbs.c:441 create_qp+0x5ac/0x960 drivers/infiniband/core/verbs.c:1233 ib_create_qp_kernel+0x9d/0x310 drivers/infiniband/core/verbs.c:1344 ib_create_qp include/rdma/ib_verbs.h:3732 [inline] create_mad_qp+0x177/0x2d0 drivers/infiniband/core/mad.c:2910 ib_mad_port_open drivers/infiniband/core/mad.c:2991 [inline] ib_mad_init_device+0xd51/0x13f0 drivers/infiniband/core/mad.c:3082 add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:721 enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1332 ib_register_device drivers/infiniband/core/device.c:1420 [inline] ib_register_device+0x83e/0xb20 drivers/infiniband/core/device.c:1366 rxe_register_device+0x2fe/0x3b0 drivers/infiniband/sw/rxe/rxe_verbs.c:1138 rxe_net_add+0x8c/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:521 rxe_newlink drivers/infiniband/sw/rxe/rxe.c:195 [inline] rxe_newlink+0xa9/0xd0 drivers/infiniband/sw/rxe/rxe.c:176 nldev_newlink+0x32e/0x5c0 drivers/infiniband/core/nldev.c:1717 rdma_nl_rcv_msg+0x36d/0x690 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x2ee/0x430 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 ____sys_sendmsg+0x6eb/0x810 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565 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: 0033:0x7fa5eec89279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa5efd65168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa5eed9bf80 RCX: 00007fa5eec89279 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00007fa5eece3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcc2ee4ccf R14: 00007fa5efd65300 R15: 0000000000022000 </TASK> Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc90003e6eb40 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88807caf65c8 RCX: ffffc9000b042000 RDX: 0000000000040000 RSI: ffffffff86d4bfcb RDI: 0000000000000000 RBP: ffffed100f95ecc8 R08: 0000000000000001 R09: ffff88807caf669f R10: ffffed100f95ecd3 R11: 0000000000000000 R12: 0000000000000000 R13: ffffed100f95ecc9 R14: ffff88807caf6640 R15: ffff88807caf6648 FS: 00007fa5efd65700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000006ec84000 CR4: 0000000000350ef0 --- 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.
