Warning: Permanently added '10.128.0.102' (ECDSA) to the list of known hosts. executing program [ 54.095496] audit: type=1400 audit(1575967712.165:36): avc: denied { map } for pid=7704 comm="syz-executor514" path="/root/syz-executor514321103" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 54.100486] BUG: unable to handle kernel NULL pointer dereference at 0000000000000003 [ 54.130059] PGD 9e67c067 P4D 9e67c067 PUD 95f89067 PMD 0 [ 54.135599] Oops: 0002 [#1] PREEMPT SMP KASAN [ 54.140084] CPU: 1 PID: 7704 Comm: syz-executor514 Not tainted 4.19.88-syzkaller #0 [ 54.147946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.157295] RIP: 0010:mem_serial_out+0x70/0x90 [ 54.161868] Code: e1 00 00 00 49 8d 7c 24 40 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 19 48 63 db 49 03 5c 24 40 <44> 88 2b 5b 41 5c 41 5d 5d c3 e8 b1 6c f1 fd eb c0 e8 0a 6d f1 fd [ 54.180765] RSP: 0018:ffff8880817b7850 EFLAGS: 00010206 [ 54.186113] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 54.193379] RDX: 1ffffffff16da3f7 RSI: ffffffff83b16516 RDI: ffffffff8b6d1fb8 [ 54.200730] RBP: ffff8880817b7868 R08: ffff88808f8124c0 R09: ffffed104327c1d6 [ 54.208387] R10: ffffed104327c1d5 R11: ffff8882193e0eab R12: ffffffff8b6d1f78 [ 54.215673] R13: 00000000000000bf R14: 000000000000000a R15: ffffffff8b6d1fc8 [ 54.222932] FS: 0000000001c47880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 54.231158] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.237047] CR2: 0000000000000003 CR3: 0000000098d60000 CR4: 00000000001406e0 [ 54.244680] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.251982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.259236] Call Trace: [ 54.261818] serial8250_do_startup+0x1366/0x1fe0 [ 54.266588] ? lockdep_hardirqs_on+0x415/0x5d0 [ 54.271162] ? trace_hardirqs_on+0x67/0x220 [ 54.275685] serial8250_startup+0x62/0x80 [ 54.280007] uart_startup.part.0+0x491/0x980 [ 54.284432] ? uart_put_char+0x530/0x530 [ 54.288488] ? serial8250_request_std_resource+0x159/0x3d0 [ 54.294361] ? serial8250_probe+0x690/0x690 [ 54.299751] ? serial8250_request_port+0x16/0x20 [ 54.304500] uart_ioctl+0x15ec/0x2a60 [ 54.308309] ? uart_port_activate+0x230/0x230 [ 54.312955] ? __might_fault+0x12b/0x1e0 [ 54.317013] ? uart_port_activate+0x230/0x230 [ 54.321538] tty_ioctl+0x7f3/0x1510 [ 54.325263] ? tty_vhangup+0x30/0x30 [ 54.329064] ? find_held_lock+0x35/0x130 [ 54.333212] ? debug_check_no_obj_freed+0x200/0x464 [ 54.338327] ? __might_sleep+0x95/0x190 [ 54.342331] ? trace_hardirqs_off+0x62/0x220 [ 54.346742] ? tty_vhangup+0x30/0x30 [ 54.350441] do_vfs_ioctl+0xd5f/0x1380 [ 54.355197] ? selinux_file_ioctl+0x46f/0x5e0 [ 54.361864] ? selinux_file_ioctl+0x125/0x5e0 [ 54.366474] ? ioctl_preallocate+0x210/0x210 [ 54.370959] ? selinux_file_mprotect+0x620/0x620 [ 54.375706] ? kmem_cache_free+0x222/0x260 [ 54.379969] ? do_sys_open+0x31d/0x550 [ 54.383941] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.389616] ? security_file_ioctl+0x8d/0xc0 [ 54.394031] ksys_ioctl+0xab/0xd0 [ 54.397481] __x64_sys_ioctl+0x73/0xb0 [ 54.401444] do_syscall_64+0xfd/0x620 [ 54.405232] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.410426] RIP: 0033:0x440219 [ 54.413658] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 54.432851] RSP: 002b:00007ffccb079d08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.440986] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 54.448243] RDX: 0000000020000080 RSI: 000000000000541f RDI: 0000000000000003 [ 54.455700] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 54.462966] R10: 0000000000401b30 R11: 0000000000000246 R12: 0000000000401aa0 [ 54.470232] R13: 0000000000401b30 R14: 0000000000000000 R15: 0000000000000000 [ 54.477494] Modules linked in: [ 54.480685] CR2: 0000000000000003 [ 54.484835] ---[ end trace 9f5b4c5cacb51795 ]--- [ 54.489691] RIP: 0010:mem_serial_out+0x70/0x90 [ 54.494628] Code: e1 00 00 00 49 8d 7c 24 40 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 19 48 63 db 49 03 5c 24 40 <44> 88 2b 5b 41 5c 41 5d 5d c3 e8 b1 6c f1 fd eb c0 e8 0a 6d f1 fd [ 54.514287] RSP: 0018:ffff8880817b7850 EFLAGS: 00010206 [ 54.519666] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 54.527164] RDX: 1ffffffff16da3f7 RSI: ffffffff83b16516 RDI: ffffffff8b6d1fb8 [ 54.534481] RBP: ffff8880817b7868 R08: ffff88808f8124c0 R09: ffffed104327c1d6 [ 54.541805] R10: ffffed104327c1d5 R11: ffff8882193e0eab R12: ffffffff8b6d1f78 [ 54.549403] R13: 00000000000000bf R14: 000000000000000a R15: ffffffff8b6d1fc8 [ 54.556778] FS: 0000000001c47880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 54.565274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.571164] CR2: 0000000000000003 CR3: 0000000098d60000 CR4: 00000000001406e0 [ 54.578663] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.586367] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.593833] Kernel panic - not syncing: Fatal exception [ 54.600505] Kernel Offset: disabled [ 54.604142] Rebooting in 86400 seconds..