[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 23.209856] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.538625] random: sshd: uninitialized urandom read (32 bytes read) [ 26.766498] random: sshd: uninitialized urandom read (32 bytes read) [ 27.309106] random: sshd: uninitialized urandom read (32 bytes read) [ 46.158039] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.42' (ECDSA) to the list of known hosts. [ 51.726000] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.329663] kasan: CONFIG_KASAN_INLINE enabled [ 53.334479] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 53.341891] general protection fault: 0000 [#1] SMP KASAN [ 53.347416] CPU: 0 PID: 5582 Comm: kworker/0:113 Not tainted 4.18.0+ #191 [ 53.354322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.363756] Workqueue: events smc_tcp_listen_work [ 53.368588] RIP: 0010:inet_accept+0x106/0xa40 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.373064] Code: 09 80 fa 03 0f 8e c2 07 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 28 41 c7 86 40 ff ff ff ea ff ff ff 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 c0 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b [ 53.392026] RSP: 0018:ffff8801ce697470 EFLAGS: 00010206 [ 53.397377] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 [ 53.404632] RDX: dffffc0000000000 RSI: ffffffff85947634 RDI: 0000000000000028 [ 53.411889] RBP: ffff8801ce697598 R08: ffff8801ab0ca6c0 R09: ffffed0034fde4cf [ 53.419143] R10: ffffed0034fde4cf R11: ffff8801a7ef267b R12: ffff8801a7ef25c0 executing program executing program executing program executing program executing program executing program executing program executing program [ 53.426405] R13: ffff8801ce6974b0 R14: ffff8801ce697570 R15: 0000000000000000 [ 53.433760] FS: 0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 53.441970] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.447837] CR2: 0000000020000100 CR3: 00000001d834d000 CR4: 00000000001406f0 [ 53.455090] Call Trace: [ 53.457670] ? inet_recvmsg+0x6d0/0x6d0 [ 53.461632] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 53.466684] ? release_sock+0x1ec/0x2c0 [ 53.470649] ? trace_hardirqs_on+0xd/0x10 [ 53.474781] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.480300] ? get_next_ino+0x8b/0x110 [ 53.484177] ? security_socket_post_create+0x9f/0xd0 [ 53.489267] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.494791] ? sock_create_lite+0x4d/0x130 [ 53.499017] ? inet_recvmsg+0x6d0/0x6d0 [ 53.502977] kernel_accept+0x136/0x310 [ 53.506854] smc_tcp_listen_work+0x218/0x11c0 [ 53.511332] ? smc_ioctl+0x1270/0x1270 [ 53.515201] ? __lock_is_held+0xb5/0x140 [ 53.519244] process_one_work+0xc73/0x1ba0 [ 53.523507] ? trace_hardirqs_on+0x10/0x10 [ 53.527761] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 53.532427] ? __switch_to_asm+0x34/0x70 [ 53.536481] ? __switch_to_asm+0x40/0x70 [ 53.540523] ? __switch_to_asm+0x34/0x70 [ 53.544578] ? __switch_to_asm+0x40/0x70 [ 53.548628] ? __switch_to_asm+0x34/0x70 [ 53.552675] ? __switch_to_asm+0x40/0x70 [ 53.556719] ? __switch_to_asm+0x34/0x70 [ 53.560765] ? __switch_to_asm+0x40/0x70 [ 53.564811] ? __switch_to_asm+0x34/0x70 [ 53.569011] ? __sched_text_start+0x8/0x8 [ 53.573152] ? lock_downgrade+0x8f0/0x8f0 [ 53.577291] ? graph_lock+0x170/0x170 [ 53.581099] ? lock_acquire+0x1e4/0x540 [ 53.585076] ? worker_thread+0x3dc/0x13c0 [ 53.589208] ? lock_downgrade+0x8f0/0x8f0 [ 53.593348] ? lock_release+0xa30/0xa30 [ 53.597306] ? kasan_check_read+0x11/0x20 [ 53.601450] ? do_raw_spin_unlock+0xa7/0x2f0 [ 53.605845] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 53.610419] ? kasan_check_write+0x14/0x20 [ 53.614645] ? do_raw_spin_lock+0xc1/0x200 [ 53.618873] worker_thread+0x189/0x13c0 [ 53.622831] ? __switch_to_asm+0x34/0x70 [ 53.626953] ? __switch_to_asm+0x34/0x70 [ 53.631005] ? __switch_to_asm+0x40/0x70 [ 53.635105] ? process_one_work+0x1ba0/0x1ba0 [ 53.639612] ? graph_lock+0x170/0x170 [ 53.643396] ? __sched_text_start+0x8/0x8 [ 53.647528] ? graph_lock+0x170/0x170 [ 53.651323] ? find_held_lock+0x36/0x1c0 [ 53.655369] ? find_held_lock+0x36/0x1c0 [ 53.659425] ? lock_downgrade+0x8f0/0x8f0 [ 53.663566] ? kasan_check_read+0x11/0x20 [ 53.667706] ? do_raw_spin_unlock+0xa7/0x2f0 [ 53.672101] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 53.676672] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 53.681759] ? __kthread_parkme+0x58/0x1b0 [ 53.686054] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 53.691062] ? trace_hardirqs_on+0xd/0x10 [ 53.695195] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 53.700715] ? __kthread_parkme+0x106/0x1b0 [ 53.705022] kthread+0x35a/0x420 [ 53.708378] ? process_one_work+0x1ba0/0x1ba0 [ 53.712857] ? kthread_bind+0x40/0x40 [ 53.716649] ret_from_fork+0x3a/0x50 [ 53.720348] Modules linked in: [ 53.723527] Dumping ftrace buffer: [ 53.727056] (ftrace buffer empty) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.730826] ---[ end trace 7df3eb457dffbd86 ]--- [ 53.735606] RIP: 0010:inet_accept+0x106/0xa40 [ 53.740114] Code: 09 80 fa 03 0f 8e c2 07 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 28 41 c7 86 40 ff ff ff ea ff ff ff 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 c0 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b [ 53.759047] RSP: 0018:ffff8801ce697470 EFLAGS: 00010206 [ 53.764458] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 [ 53.771766] RDX: dffffc0000000000 RSI: ffffffff85947634 RDI: 0000000000000028 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.779084] RBP: ffff8801ce697598 R08: ffff8801ab0ca6c0 R09: ffffed0034fde4cf [ 53.786398] R10: ffffed0034fde4cf R11: ffff8801a7ef267b R12: ffff8801a7ef25c0 [ 53.793712] R13: ffff8801ce6974b0 R14: ffff8801ce697570 R15: 0000000000000000 [ 53.801021] FS: 0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 53.809294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.815195] CR2: 0000000020000100 CR3: 00000001d834d000 CR4: 00000000001406f0 [ 53.822497] Kernel panic - not syncing: Fatal exception [ 53.828148] Dumping ftrace buffer: [ 53.831677] (ftrace buffer empty) [ 53.835366] Kernel Offset: disabled [ 53.839179] Rebooting in 86400 seconds..