dmesg output on focal:
[ 951.293174] LTP: starting pty03
[ 951.305037] SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256)
(6 bit encapsulation enabled).
[ 951.305038] CSLIP: code copyright 1989 Regents of the University of
California.
[ 951.305039] SLIP linefill/keepalive option.
[ 951.306823] BUG: kernel NULL pointer dereference, address: 0000000000000020
[ 951.309960] #PF: supervisor write access in kernel mode
[ 951.312130] #PF: error_code(0x0002) - not-present page
[ 951.314227] PGD 0 P4D 0
[ 951.315278] Oops: 0002 [#1] SMP PTI
[ 951.316705] CPU: 1 PID: 39102 Comm: pty03 Not tainted 5.4.0-12-generic
#15-Ubuntu
[ 951.319737] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.10.2-1ubuntu1 04/01/2014
[ 951.322713] RIP: 0010:queue_work_on+0x1b/0x50
[ 951.324175] Code: 75 01 01 e8 b2 05 fe ff 0f 0b e9 c3 fc ff ff 0f 1f 44 00
00 55 48 89 e5 53 9c 58 0f 1f 44 00 00 48 89 c3 fa 66 0f 1f 44 00 00 <f0> 48 0f
ba 2a 00 73 13 45 31 c0 48 89 df 57 9d 0f 1f 44 00 00 44
[ 951.329576] RSP: 0018:ffffab9380557cb8 EFLAGS: 00010002
[ 951.331197] RAX: 0000000000000202 RBX: 0000000000000202 RCX: 0000000000000000
[ 951.333358] RDX: 0000000000000020 RSI: ffff8c65fb00ae00 RDI: 0000000000002000
[ 951.335566] RBP: ffffab9380557cc0 R08: 0000000000000001 R09: 0000000000000006
[ 951.337743] R10: ffff8c65f8f4cb00 R11: 0000000000000000 R12: ffff8c65ea61f550
[ 951.339955] R13: 0000000000000000 R14: ffff8c65eda51400 R15: ffff8c65f9002a00
[ 951.342084] FS: 00007f808362a700(0000) GS:ffff8c65fbb00000(0000)
knlGS:0000000000000000
[ 951.344442] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 951.346163] CR2: 0000000000000020 CR3: 000000012a64c000 CR4: 00000000000006e0
[ 951.348264] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 951.350422] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 951.352494] Call Trace:
[ 951.353244] slip_write_wakeup+0x25/0x30 [slip]
[ 951.354600] tty_wakeup+0x5b/0x70
[ 951.355539] pty_unthrottle+0x19/0x30
[ 951.356560] tty_unthrottle+0x42/0x60
[ 951.357566] __tty_perform_flush+0x87/0x90
[ 951.358768] n_tty_ioctl_helper+0xcc/0x150
[ 951.359955] n_tty_ioctl+0x2d/0x100
[ 951.360930] tty_ioctl+0x3c0/0x8e0
[ 951.361882] ? __switch_to_asm+0x34/0x70
[ 951.363049] ? __switch_to_asm+0x40/0x70
[ 951.364191] ? __switch_to_asm+0x34/0x70
[ 951.365261] ? __switch_to_asm+0x40/0x70
[ 951.366382] ? __switch_to_asm+0x34/0x70
[ 951.367452] ? __switch_to_asm+0x40/0x70
[ 951.368523] ? __switch_to_asm+0x34/0x70
[ 951.369693] ? __switch_to_asm+0x40/0x70
[ 951.370829] ? __switch_to_asm+0x34/0x70
[ 951.371923] ? __switch_to_asm+0x40/0x70
[ 951.372998] ? __switch_to_asm+0x34/0x70
[ 951.374097] ? __switch_to_asm+0x40/0x70
[ 951.375183] ? __switch_to_asm+0x34/0x70
[ 951.376288] ? __switch_to_asm+0x40/0x70
[ 951.377390] ? __switch_to+0x110/0x470
[ 951.378863] do_vfs_ioctl+0x407/0x670
[ 951.380269] ? __schedule+0x2eb/0x740
[ 951.381761] ksys_ioctl+0x67/0x90
[ 951.383076] __x64_sys_ioctl+0x1a/0x20
[ 951.384510] do_syscall_64+0x57/0x190
[ 951.385896] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 951.387655] RIP: 0033:0x7f808374568b
[ 951.389147] Code: 0f 1e fa 48 8b 05 05 28 0d 00 64 c7 00 26 00 00 00 48 c7
c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 8b 0d d5 27 0d 00 f7 d8 64 89 01 48
[ 951.395021] RSP: 002b:00007f8083629ec8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[ 951.397467] RAX: ffffffffffffffda RBX: 000000000000000a RCX: 00007f808374568b
[ 951.399824] RDX: 0000000000000000 RSI: 000000000000540b RDI: 0000000000000006
[ 951.402105] RBP: 00005627b8f404c6 R08: 00007ffee1d0c1b0 R09: 00005627b8f4b320
[ 951.404415] R10: 00005627b8f4b318 R11: 0000000000000246 R12: 0000000000000000
[ 951.406754] R13: 00007ffee1c03cbf R14: 00007ffee1c03cc0 R15: 00007f8083629fc0
[ 951.409192] Modules linked in: slip serport dm_multipath scsi_dh_rdac
scsi_dh_emc scsi_dh_alua kvm_intel joydev kvm input_leds serio_raw mac_hid
qemu_fw_cfg sch_fq_codel ip_tables x_tables autofs4 btrfs zstd_compress raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq
libcrc32c raid1 raid0 multipath linear cirrus drm_kms_helper syscopyarea
sysfillrect sysimgblt fb_sys_fops drm virtio_net net_failover failover
virtio_blk psmouse i2c_piix4 pata_acpi floppy
[ 951.424165] CR2: 0000000000000020
[ 951.425788] ---[ end trace 41434fc402e37fd0 ]---
[ 951.427905] RIP: 0010:queue_work_on+0x1b/0x50
[ 951.429933] Code: 75 01 01 e8 b2 05 fe ff 0f 0b e9 c3 fc ff ff 0f 1f 44 00
00 55 48 89 e5 53 9c 58 0f 1f 44 00 00 48 89 c3 fa 66 0f 1f 44 00 00 <f0> 48 0f
ba 2a 00 73 13 45 31 c0 48 89 df 57 9d 0f 1f 44 00 00 44
[ 951.437519] RSP: 0018:ffffab9380557cb8 EFLAGS: 00010002
[ 951.439860] RAX: 0000000000000202 RBX: 0000000000000202 RCX: 0000000000000000
[ 951.442897] RDX: 0000000000000020 RSI: ffff8c65fb00ae00 RDI: 0000000000002000
[ 951.445937] RBP: ffffab9380557cc0 R08: 0000000000000001 R09: 0000000000000006
[ 951.449000] R10: ffff8c65f8f4cb00 R11: 0000000000000000 R12: ffff8c65ea61f550
[ 951.451758] R13: 0000000000000000 R14: ffff8c65eda51400 R15: ffff8c65f9002a00
[ 951.454521] FS: 00007f808362a700(0000) GS:ffff8c65fbb00000(0000)
knlGS:0000000000000000
[ 951.457385] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 951.459435] CR2: 0000000000000020 CR3: 000000012a64c000 CR4: 00000000000006e0
[ 951.461819] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 951.464248] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Changed in: linux (Ubuntu Bionic)
Status: New => Confirmed
** Changed in: ubuntu-kernel-tests
Status: New => Confirmed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1862114
Title:
pty03 from pty in ubuntu_ltp failed on Eoan
Status in ubuntu-kernel-tests:
Confirmed
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Bionic:
Confirmed
Status in linux source package in Eoan:
Confirmed
Bug description:
startup='Thu Feb 6 02:45:23 2020'
tst_test.c:1215: INFO: Timeout per run is 0h 05m 00s
pty03.c:101: INFO: Creating PTY with SLIP line discipline
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Test timeouted, sending SIGKILL!
Cannot kill test processes!
Congratulation, likely test hit a kernel bug.
Exitting uncleanly...
tag=pty03 stime=1580957123 dur=350 exit=exited stat=1 core=no cu=0 cs=0
This is a new test case, so it's not a regression.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1862114/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
