Warning: Permanently added '10.128.0.30' (ECDSA) to the list of known hosts. executing program [ 52.162723] audit: type=1400 audit(1576761396.951:36): avc: denied { map } for pid=7706 comm="syz-executor921" path="/root/syz-executor921592375" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 52.167570] BUG: unable to handle kernel NULL pointer dereference at 0000000000000002 [ 52.196931] PGD 928aa067 P4D 928aa067 PUD 8fa2f067 PMD 0 [ 52.202535] Oops: 0002 [#1] PREEMPT SMP KASAN [ 52.207038] CPU: 1 PID: 7706 Comm: syz-executor921 Not tainted 4.19.90-syzkaller #0 [ 52.214816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.224167] RIP: 0010:mem16_serial_out+0x6c/0x90 [ 52.228906] Code: b6 8d e1 00 00 00 49 8d 7d 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 5d 40 <66> 44 89 23 5b 41 5c 41 5d 5d c3 e8 54 55 f1 fd eb c2 e8 ad 55 f1 [ 52.247807] RSP: 0018:ffff8880957c7830 EFLAGS: 00010202 [ 52.253162] RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000000 [ 52.260530] RDX: 1ffffffff16da20a RSI: ffffffff83b18446 RDI: ffffffff8b6d1050 [ 52.267858] RBP: ffff8880957c7848 R08: ffff888095c740c0 R09: ffffed10148081d6 [ 52.275167] R10: ffffed10148081d5 R11: ffff8880a4040eab R12: 0000000000000001 [ 52.282427] R13: ffffffff8b6d1010 R14: ffffffff8b6d1160 R15: ffff8880a4040b00 [ 52.289688] FS: 000000000157e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 52.297918] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.303813] CR2: 0000000000000002 CR3: 000000009252f000 CR4: 00000000001406e0 [ 52.311083] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.318342] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.325599] Call Trace: [ 52.328195] serial8250_clear_fifos.part.0+0x3a/0xb0 [ 52.333283] serial8250_do_startup+0x440/0x1f90 [ 52.337950] ? lockdep_hardirqs_on+0x415/0x5d0 [ 52.342521] serial8250_startup+0x62/0x80 [ 52.346650] uart_startup.part.0+0x488/0x970 [ 52.351055] ? uart_put_char+0x530/0x530 [ 52.355113] ? serial8250_request_std_resource+0x159/0x3d0 [ 52.360824] ? serial8250_probe+0x680/0x680 [ 52.365152] ? serial8250_request_port+0x16/0x20 [ 52.369894] uart_ioctl+0x15ec/0x2a50 [ 52.373703] ? uart_port_activate+0x240/0x240 [ 52.378188] ? __might_fault+0x12b/0x1e0 [ 52.382256] ? uart_port_activate+0x240/0x240 [ 52.386763] tty_ioctl+0x7f3/0x1510 [ 52.390374] ? tty_vhangup+0x30/0x30 [ 52.394073] ? find_held_lock+0x35/0x130 [ 52.398121] ? debug_check_no_obj_freed+0x200/0x464 [ 52.403131] ? __might_sleep+0x95/0x190 [ 52.407087] ? trace_hardirqs_off+0x62/0x220 [ 52.411483] ? tty_vhangup+0x30/0x30 [ 52.415201] do_vfs_ioctl+0xd5f/0x1380 [ 52.419070] ? selinux_file_ioctl+0x46f/0x5e0 [ 52.423565] ? selinux_file_ioctl+0x125/0x5e0 [ 52.428057] ? ioctl_preallocate+0x210/0x210 [ 52.432982] ? selinux_file_mprotect+0x620/0x620 [ 52.437720] ? kmem_cache_free+0x222/0x260 [ 52.441943] ? do_sys_open+0x31d/0x550 [ 52.445815] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.451332] ? security_file_ioctl+0x8d/0xc0 [ 52.455726] ksys_ioctl+0xab/0xd0 [ 52.459166] __x64_sys_ioctl+0x73/0xb0 [ 52.463056] do_syscall_64+0xfd/0x620 [ 52.466843] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.472013] RIP: 0033:0x440219 [ 52.475189] 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 [ 52.494072] RSP: 002b:00007ffecd856228 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.501763] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 52.509030] RDX: 0000000020000240 RSI: 000000000000541f RDI: 0000000000000003 [ 52.516284] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 52.523533] R10: 0000000000401b30 R11: 0000000000000246 R12: 0000000000401aa0 [ 52.530784] R13: 0000000000401b30 R14: 0000000000000000 R15: 0000000000000000 [ 52.538038] Modules linked in: [ 52.541211] CR2: 0000000000000002 [ 52.545605] ---[ end trace 7be284f6278fc3bb ]--- [ 52.550403] RIP: 0010:mem16_serial_out+0x6c/0x90 [ 52.555450] Code: b6 8d e1 00 00 00 49 8d 7d 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 5d 40 <66> 44 89 23 5b 41 5c 41 5d 5d c3 e8 54 55 f1 fd eb c2 e8 ad 55 f1 [ 52.574439] RSP: 0018:ffff8880957c7830 EFLAGS: 00010202 [ 52.579810] RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000000 [ 52.587186] RDX: 1ffffffff16da20a RSI: ffffffff83b18446 RDI: ffffffff8b6d1050 [ 52.594539] RBP: ffff8880957c7848 R08: ffff888095c740c0 R09: ffffed10148081d6 [ 52.601855] R10: ffffed10148081d5 R11: ffff8880a4040eab R12: 0000000000000001 [ 52.609123] R13: ffffffff8b6d1010 R14: ffffffff8b6d1160 R15: ffff8880a4040b00 [ 52.616442] FS: 000000000157e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 52.624720] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.630590] CR2: 0000000000000002 CR3: 000000009252f000 CR4: 00000000001406e0 [ 52.637917] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.645394] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.652709] Kernel panic - not syncing: Fatal exception [ 52.659787] Kernel Offset: disabled [ 52.663437] Rebooting in 86400 seconds..