#1135780 nouveau: driver caused graphical session to become unresponsive

Package:
src:linux
Source:
src:linux
Submitter:
Anand Kumria
Date:
2026-06-30 04:33:02 UTC
Severity:
normal
Tags:
#1135780#5
Date:
2026-05-05 20:19:23 UTC
From:
To:
Dear Maintainer,

While in an ordinary graphical session, it suddenly became unresponsive.

After rebooting, the following messages were in the kernel log.
#1135780#10
Date:
2026-05-05 20:27:32 UTC
From:
To:
Hi

As 6.19.y is end of life now, can you please update to the 7.0.3-1
kernel in unstable and report back if you can reproduce the issue?

Regards,
Salvatore
#1135780#17
Date:
2026-06-30 03:40:14 UTC
From:
To:
Hi,

The same lock-up has occurred with a new kernel version:

Jun 07 14:31:39 pushan kernel: Linux version 7.0.9+deb14-amd64 (
debian-kernel@lists.debian.org) (x86_64-linux-gnu-gcc-15 (Debian 15.2.0-17)>
...
Jun 29 14:19:47 pushan kernel: BUG: kernel NULL pointer dereference,
address: 0000000000000040
Jun 29 14:19:48 pushan kernel: #PF: supervisor read access in kernel mode
Jun 29 14:19:48 pushan kernel: #PF: error_code(0x0000) - not-present page
Jun 29 14:19:48 pushan kernel: PGD 0 P4D 0
Jun 29 14:19:48 pushan kernel: Oops: Oops: 0000 [#1] SMP PTI
Jun 29 14:19:48 pushan kernel: CPU: 6 UID: 1000 PID: 1532627 Comm: chrome
Not tainted 7.0.9+deb14-amd64 #1 PREEMPT(lazy)  Debian 7.0.9-1
Jun 29 14:19:48 pushan kernel: Hardware name: Acer Veriton S680G
 /Veriton M680G, BIOS P01-A4         05/27/2010
Jun 29 14:19:48 pushan kernel: RIP: 0010:nouveau_fence_sync+0x12c/0x1b0
[nouveau]
Jun 29 14:19:48 pushan kernel: Code: 74 08 48 3d 20 dd d2 c0 75 aa e8 bf 47
b1 c6 49 8b 76 50 48 85 f6 74 97 48 8b 85 f0 00 00 00 48 8b 96 f0 00 00 00
48 8b 40 40 <48> 39 42 40 0f 85 7b ff ff ff 48 39 f5 74 17 49 8b 47 30 48 8>
Jun 29 14:19:48 pushan kernel: RSP: 0018:ffffcf83a06cf540 EFLAGS: 00010286
Jun 29 14:19:48 pushan kernel: RAX: ffff8a62909f4000 RBX: ffffcf83a06cf558
RCX: ffff8a635f0050c0
Jun 29 14:19:48 pushan kernel: RDX: 0000000000000000 RSI: ffff8a62d6520c00
RDI: ffffcf83a06cf558
Jun 29 14:19:48 pushan kernel: RBP: ffff8a6304899400 R08: 0000000000000000
R09: 0000820000000000
Jun 29 14:19:48 pushan kernel: R10: ffff8a62909f41c0 R11: 00007e0000000000
R12: 0000000000000000
Jun 29 14:19:48 pushan kernel: R13: 0000000000000000 R14: ffff8a65acbc5d20
R15: ffff8a6280f94500
Jun 29 14:19:48 pushan kernel: FS:  00007f92404ce700(0000)
GS:ffff8a6625efc000(0000) knlGS:0000000000000000
Jun 29 14:19:48 pushan kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jun 29 14:19:48 pushan kernel: CR2: 0000000000000040 CR3: 0000000385f52000
CR4: 00000000000026f0
Jun 29 14:19:48 pushan kernel: Call Trace:
Jun 29 14:19:48 pushan kernel:  <TASK>
Jun 29 14:19:48 pushan kernel:  nouveau_bo_move+0x1de/0x8d0 [nouveau]
Jun 29 14:19:48 pushan kernel:  ? ttm_pool_alloc+0x7d/0xb0 [ttm]
Jun 29 14:19:48 pushan kernel:  ? ttm_tt_populate+0xa1/0x140 [ttm]
Jun 29 14:19:48 pushan kernel:  ttm_bo_handle_move_mem+0xd0/0x1a0 [ttm]
Jun 29 14:19:48 pushan kernel:  ttm_bo_evict+0x115/0x170 [ttm]
Jun 29 14:19:48 pushan kernel:  ? __ttm_bo_lru_cursor_next+0xff/0x300 [ttm]
Jun 29 14:19:48 pushan kernel:  ttm_bo_evict_cb+0x77/0xd0 [ttm]
Jun 29 14:19:48 pushan kernel:  ttm_lru_walk_for_evict+0xad/0x1d0 [ttm]
Jun 29 14:19:48 pushan kernel:  ttm_bo_alloc_resource+0x186/0x4c0 [ttm]
Jun 29 14:19:48 pushan kernel:  ttm_bo_validate+0x9e/0x180 [ttm]
Jun 29 14:19:48 pushan kernel:  ttm_bo_init_reserved+0x16d/0x1f0 [ttm]
Jun 29 14:19:48 pushan kernel:  nouveau_bo_init+0x95/0x110 [nouveau]
Jun 29 14:19:48 pushan kernel:  ? __pfx_nouveau_bo_del_ttm+0x10/0x10
[nouveau]
Jun 29 14:19:48 pushan kernel:  nouveau_gem_new+0x163/0x200 [nouveau]
Jun 29 14:19:48 pushan kernel:  nouveau_gem_ioctl_new+0x8c/0x170 [nouveau]
Jun 29 14:19:48 pushan kernel:  ? __pfx_nouveau_gem_ioctl_new+0x10/0x10
[nouveau]
Jun 29 14:19:48 pushan kernel:  drm_ioctl_kernel+0xae/0x100 [drm]
Jun 29 14:19:48 pushan kernel:  drm_ioctl+0x2a8/0x550 [drm]
Jun 29 14:19:48 pushan kernel:  ? __pfx_nouveau_gem_ioctl_new+0x10/0x10
[nouveau]
Jun 29 14:19:48 pushan kernel:  nouveau_drm_ioctl+0x58/0xc0 [nouveau]
Jun 29 14:19:48 pushan kernel:  __x64_sys_ioctl+0x97/0xe0
Jun 29 14:19:48 pushan kernel:  do_syscall_64+0xcd/0x15f0
Jun 29 14:19:48 pushan kernel:  ? __alloc_frozen_pages_noprof+0x17e/0x340
Jun 29 14:19:48 pushan kernel:  ? mod_memcg_lruvec_state+0xe7/0x2e0
Jun 29 14:19:48 pushan kernel:  ? lruvec_stat_mod_folio+0x85/0xd0
Jun 29 14:19:48 pushan kernel:  ? __folio_mod_stat+0x2d/0x90
Jun 29 14:19:48 pushan kernel:  ? set_ptes.isra.0+0x36/0x80
Jun 29 14:19:48 pushan kernel:  ? do_anonymous_page+0x103/0x900
Jun 29 14:19:48 pushan kernel:  ? __pte_offset_map+0x1b/0x100
Jun 29 14:19:48 pushan kernel:  ? __handle_mm_fault+0xb12/0xf50
Jun 29 14:19:48 pushan kernel:  ? __free_frozen_pages+0x242/0x7c0
Jun 29 14:19:48 pushan kernel:  ? count_memcg_events+0xeb/0x220
Jun 29 14:19:48 pushan kernel:  ? handle_mm_fault+0x1d6/0x2d0
Jun 29 14:19:48 pushan kernel:  ? do_user_addr_fault+0x2b4/0x7b0
Jun 29 14:19:48 pushan kernel:  ? irqentry_exit+0x6e/0x570
Jun 29 14:19:48 pushan kernel:  ? exc_page_fault+0x82/0x1d0
Jun 29 14:19:48 pushan kernel:  ? __irq_exit_rcu+0x3d/0xe0
Jun 29 14:19:48 pushan kernel:  entry_SYSCALL_64_after_hwframe+0x76/0x7e
Jun 29 14:19:48 pushan kernel: RIP: 0033:0x7f92416d7d3b
Jun 29 14:19:48 pushan kernel: Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60
c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00
00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 0>
Jun 29 14:19:48 pushan kernel: RSP: 002b:00007ffc0acf89f0 EFLAGS: 00000246
ORIG_RAX: 0000000000000010
Jun 29 14:19:48 pushan kernel: RAX: ffffffffffffffda RBX: 0000379c00221320
RCX: 00007f92416d7d3b
Jun 29 14:19:48 pushan kernel: RDX: 00007ffc0acf8aa0 RSI: 00000000c0306480
RDI: 0000000000000013
Jun 29 14:19:48 pushan kernel: RBP: 00007ffc0acf8aa0 R08: 00005600f4303bc8
R09: 0000379c03e07dc0
Jun 29 14:19:48 pushan kernel: R10: 0000379c03e07e8c R11: 0000000000000246
R12: 00000000c0306480
Jun 29 14:19:48 pushan kernel: R13: 0000000000000013 R14: 0000379c00088600
R15: 0000000000001000
Jun 29 14:19:48 pushan kernel:  </TASK>
Jun 29 14:19:48 pushan kernel: Modules linked in: nft_fib_ipv6 nft_ct
nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_fib_ipv4 nft_fib nf_tables
wireguard libcurve25519 libchacha20poly1305 libchacha libpoly1305
ip6_udp_tunnel u>
Jun 29 14:19:48 pushan kernel:  drm_exec i2c_algo_bit drm_display_helper
cec rc_core drm_client_lib drm_kms_helper sd_mod hid_generic usbhid uas
usb_storage hid ahci libahci ata_generic iTCO_wdt drm libata intel_pmc_bxt
ehci_p>
Jun 29 14:19:48 pushan kernel: CR2: 0000000000000040
Jun 29 14:19:48 pushan kernel: ---[ end trace 0000000000000000 ]---
Jun 29 14:19:48 pushan kernel: RIP: 0010:nouveau_fence_sync+0x12c/0x1b0
[nouveau]
Jun 29 14:19:48 pushan kernel: Code: 74 08 48 3d 20 dd d2 c0 75 aa e8 bf 47
b1 c6 49 8b 76 50 48 85 f6 74 97 48 8b 85 f0 00 00 00 48 8b 96 f0 00 00 00
48 8b 40 40 <48> 39 42 40 0f 85 7b ff ff ff 48 39 f5 74 17 49 8b 47 30 48 8>
Jun 29 14:19:48 pushan kernel: RSP: 0018:ffffcf83a06cf540 EFLAGS: 00010286
Jun 29 14:19:48 pushan kernel: RAX: ffff8a62909f4000 RBX: ffffcf83a06cf558
RCX: ffff8a635f0050c0
Jun 29 14:19:48 pushan kernel: RDX: 0000000000000000 RSI: ffff8a62d6520c00
RDI: ffffcf83a06cf558
Jun 29 14:19:48 pushan kernel: RBP: ffff8a6304899400 R08: 0000000000000000
R09: 0000820000000000
Jun 29 14:19:48 pushan kernel: R10: ffff8a62909f41c0 R11: 00007e0000000000
R12: 0000000000000000
Jun 29 14:19:48 pushan kernel: R13: 0000000000000000 R14: ffff8a65acbc5d20
R15: ffff8a6280f94500
Jun 29 14:19:48 pushan kernel: FS:  00007f92404ce700(0000)
GS:ffff8a6625efc000(0000) knlGS:0000000000000000
Jun 29 14:19:48 pushan kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jun 29 14:19:48 pushan kernel: CR2: 0000000000000040 CR3: 0000000385f52000
CR4: 00000000000026f0
Jun 29 14:19:52 pushan kernel: audit: type=1400
audit(1782706792.259:350272): apparmor="DENIED" operation="ptrace"
class="ptrace" profile="/usr/bin/papers//sanitized_helper" pid=368943
comm="FSBroker855023" requested_mask="rea>
Jun 29 14:20:05 pushan kernel: BUG: unable to handle page fault for
address: ffffcf83a06cf7a8
Jun 29 14:20:05 pushan kernel: #PF: supervisor read access in kernel mode
Jun 29 14:20:05 pushan kernel: #PF: error_code(0x0000) - not-present page
Jun 29 14:20:05 pushan kernel: PGD 100000067 P4D 100000067 PUD 100259067
PMD 3d15b1067 PTE 0

Thanks,
Anand