[ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 52.477905][ T6752] sshd (6752) used greatest stack depth: 22016 bytes left [ 55.358113][ T6733] sshd (6733) used greatest stack depth: 21984 bytes left Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. executing program [ 61.804192][ T6795] IPVS: ftp: loaded support on port[0] = 21 [ 61.950534][ T6795] infiniband syz0: set active [ 61.955925][ T6795] infiniband syz0: added syz_tun [ 62.000815][ T6795] general protection fault, probably for non-canonical address 0xdffffc000000008e: 0000 [#1] PREEMPT SMP KASAN [ 62.012565][ T6795] KASAN: null-ptr-deref in range [0x0000000000000470-0x0000000000000477] [ 62.020987][ T6795] CPU: 0 PID: 6795 Comm: syz-executor748 Not tainted 5.7.0-rc7-next-20200529-syzkaller #0 [ 62.030875][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.040993][ T6795] RIP: 0010:rds_ib_add_one+0xab/0xcb0 [ 62.046345][ T6795] Code: 80 3c 02 00 0f 85 75 0b 00 00 49 8b 9c 24 f0 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 70 04 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f1 [ 62.065995][ T6795] RSP: 0018:ffffc90001276ff8 EFLAGS: 00010206 [ 62.072155][ T6795] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff875e5e3a [ 62.080181][ T6795] RDX: 000000000000008e RSI: ffffffff875e5e48 RDI: 0000000000000470 [ 62.088334][ T6795] RBP: ffff88809e03c000 R08: ffff88808e3d4100 R09: ffffed1013c0789f [ 62.096303][ T6795] R10: ffff88809e03c4f7 R11: ffffed1013c0789e R12: ffff88809e03c000 [ 62.104344][ T6795] R13: ffff88809e03c580 R14: ffff88809e03c4e8 R15: ffffffff875e5de0 [ 62.112306][ T6795] FS: 0000000001bf6880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 62.121236][ T6795] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.127803][ T6795] CR2: 00007ffdcd771030 CR3: 000000009a1f4000 CR4: 00000000001406f0 [ 62.135772][ T6795] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.143913][ T6795] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.151861][ T6795] Call Trace: [ 62.155141][ T6795] ? rds_ib_remove_one+0x270/0x270 [ 62.160249][ T6795] add_client_context+0x400/0x5e0 [ 62.165254][ T6795] ? ib_device_get_by_netdev+0x500/0x500 [ 62.170867][ T6795] ? rxe_enable_driver+0x63/0x90 [ 62.175809][ T6795] enable_device_and_get+0x1cd/0x3b0 [ 62.181105][ T6795] ? add_one_compat_dev+0x800/0x800 [ 62.186310][ T6795] ? rxe_ib_alloc_hw_stats+0xf9/0x130 [ 62.191666][ T6795] ib_register_device+0xa12/0xda0 [ 62.196686][ T6795] ? enable_device_and_get+0x3b0/0x3b0 [ 62.202123][ T6795] ? crypto_create_tfm+0x118/0x2e0 [ 62.207230][ T6795] ? crypto_alloc_tfm+0x124/0x340 [ 62.212228][ T6795] ? ib_device_set_netdev+0x499/0x680 [ 62.217593][ T6795] rxe_register_device+0x50a/0x634 [ 62.222696][ T6795] rxe_add+0x1374/0x180a [ 62.226914][ T6795] rxe_net_add+0x8c/0xe0 [ 62.231138][ T6795] rxe_newlink+0x34/0x90 [ 62.235356][ T6795] nldev_newlink+0x29e/0x420 [ 62.239922][ T6795] ? nldev_set_doit+0x410/0x410 [ 62.244746][ T6795] ? save_trace+0x63f/0xaf0 [ 62.249260][ T6795] ? lock_release+0x800/0x800 [ 62.253925][ T6795] ? apparmor_capable+0x533/0x860 [ 62.258932][ T6795] ? apparmor_capable+0x533/0x860 [ 62.263945][ T6795] ? apparmor_cred_prepare+0x760/0x760 [ 62.269379][ T6795] ? apparmor_cred_prepare+0x760/0x760 [ 62.274817][ T6795] ? cap_capable+0x1eb/0x250 [ 62.279390][ T6795] ? ns_capable_common+0xe2/0x100 [ 62.284512][ T6795] ? nldev_set_doit+0x410/0x410 [ 62.289349][ T6795] rdma_nl_rcv+0x591/0x900 [ 62.293746][ T6795] ? rdma_nl_multicast+0x310/0x310 [ 62.298837][ T6795] ? netlink_deliver_tap+0x227/0xb80 [ 62.304242][ T6795] ? check_preemption_disabled+0x38/0x220 [ 62.309977][ T6795] netlink_unicast+0x537/0x740 [ 62.314759][ T6795] ? netlink_attachskb+0x810/0x810 [ 62.319863][ T6795] ? _copy_from_iter_full+0x25c/0x870 [ 62.325229][ T6795] ? __phys_addr_symbol+0x2c/0x70 [ 62.330258][ T6795] ? __check_object_size+0x171/0x437 [ 62.335544][ T6795] netlink_sendmsg+0x882/0xe10 [ 62.340296][ T6795] ? aa_af_perm+0x260/0x260 [ 62.344784][ T6795] ? netlink_unicast+0x740/0x740 [ 62.349702][ T6795] ? netlink_unicast+0x740/0x740 [ 62.354620][ T6795] sock_sendmsg+0xcf/0x120 [ 62.359018][ T6795] ____sys_sendmsg+0x6e6/0x810 [ 62.363761][ T6795] ? kernel_sendmsg+0x50/0x50 [ 62.368419][ T6795] ? release_pages+0x656/0x19a0 [ 62.373252][ T6795] ___sys_sendmsg+0x100/0x170 [ 62.377937][ T6795] ? do_huge_pmd_anonymous_page+0xce3/0x1c80 [ 62.383895][ T6795] ? sendmsg_copy_msghdr+0x70/0x70 [ 62.389002][ T6795] ? lock_downgrade+0x840/0x840 [ 62.393832][ T6795] ? do_huge_pmd_anonymous_page+0x15fb/0x1c80 [ 62.400937][ T6795] ? check_preemption_disabled+0x38/0x220 [ 62.406639][ T6795] ? find_held_lock+0x2d/0x110 [ 62.411388][ T6795] ? exc_page_fault+0x5f2/0x14a0 [ 62.416309][ T6795] ? lock_downgrade+0x840/0x840 [ 62.421140][ T6795] ? handle_mm_fault+0xbec/0x3c70 [ 62.426144][ T6795] ? __fget_light+0x1a3/0x280 [ 62.430801][ T6795] ? sockfd_lookup_light+0xc6/0x170 [ 62.436109][ T6795] __sys_sendmsg+0xe5/0x1b0 [ 62.440751][ T6795] ? __sys_sendmsg_sock+0xb0/0xb0 [ 62.445758][ T6795] ? check_preemption_disabled+0x38/0x220 [ 62.451500][ T6795] ? do_syscall_64+0x1c/0xe0 [ 62.456083][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.462058][ T6795] do_syscall_64+0x60/0xe0 [ 62.466462][ T6795] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.472333][ T6795] RIP: 0033:0x4413d9 [ 62.476227][ T6795] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 6b 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.495812][ T6795] RSP: 002b:00007fffc8c7d4c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 62.504205][ T6795] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004413d9 [ 62.512176][ T6795] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 [ 62.520139][ T6795] RBP: 00007fffc8c7d4e0 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 62.528091][ T6795] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 62.536086][ T6795] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 62.544099][ T6795] Modules linked in: [ 62.549070][ T6795] ---[ end trace b18465f6c8e9b146 ]--- [ 62.554555][ T6795] RIP: 0010:rds_ib_add_one+0xab/0xcb0 [ 62.560234][ T6795] Code: 80 3c 02 00 0f 85 75 0b 00 00 49 8b 9c 24 f0 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 70 04 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f1 [ 62.579984][ T6795] RSP: 0018:ffffc90001276ff8 EFLAGS: 00010206 [ 62.586157][ T6795] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff875e5e3a [ 62.594171][ T6795] RDX: 000000000000008e RSI: ffffffff875e5e48 RDI: 0000000000000470 [ 62.602204][ T6795] RBP: ffff88809e03c000 R08: ffff88808e3d4100 R09: ffffed1013c0789f [ 62.610237][ T6795] R10: ffff88809e03c4f7 R11: ffffed1013c0789e R12: ffff88809e03c000 [ 62.618268][ T6795] R13: ffff88809e03c580 R14: ffff88809e03c4e8 R15: ffffffff875e5de0 [ 62.626253][ T6795] FS: 0000000001bf6880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 62.635215][ T6795] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.641842][ T6795] CR2: 00007ffdcd771030 CR3: 000000009a1f4000 CR4: 00000000001406f0 [ 62.649876][ T6795] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.657894][ T6795] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.665872][ T6795] Kernel panic - not syncing: Fatal exception [ 62.673289][ T6795] Kernel Offset: disabled [ 62.677611][ T6795] Rebooting in 86400 seconds..