program:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./debug\x00', &(0x7f0000000300)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/task-filter\x00', 0x1, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000000)='./debug/failslab/probability\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='N', 0x1)
write(r1, &(0x7f0000000100)='10', 0x2)
mount$overlay(0x0, &(0x7f0000000040)='./debug/failslab/probability\x00', &(0x7f0000000080), 0xad008, &(0x7f0000000140)={[{@userxattr}, {@xino_off}, {@redirect_dir_off}, {@xino_on}, {@upperdir={'upperdir', 0x3d, './debug'}}], [{@smackfsroot={'smackfsroot', 0x3d, '-+/\'[+&:'}}]})
[ 103.314790][ T5277] Bluetooth: hci0: command tx timeout
[ 103.380027][ T5314] FAULT_INJECTION: forcing a failure.
[ 103.380027][ T5314] name failslab, interval 1, probability 10, space 0, times 1
[ 103.397084][ T12] FAULT_INJECTION: forcing a failure.
[ 103.397084][ T12] name failslab, interval 1, probability 10, space 0, times 1
[ 103.403608][ T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted syzkaller #0 PREEMPT(full)
[ 103.403628][ T12] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 103.403637][ T12] Workqueue: ipv6_addrconf addrconf_dad_work
[ 103.403748][ T12] Call Trace:
[ 103.403755][ T12]
[ 103.403761][ T12] dump_stack_lvl+0xe8/0x150
[ 103.403781][ T12] should_fail_ex+0x40c/0x560
[ 103.403836][ T12] should_failslab+0xa8/0x100
[ 103.403853][ T12] kmem_cache_alloc_noprof+0xa6/0x5f0
[ 103.403872][ T12] ? kmem_cache_alloc_noprof+0x150/0x5f0
[ 103.403888][ T12] ? fib6_add_1+0x9fe/0x13e0
[ 103.403904][ T12] ? fib6_add_1+0x9fe/0x13e0
[ 103.403923][ T12] fib6_add_1+0x9fe/0x13e0
[ 103.403949][ T12] fib6_add+0x211/0x1a20
[ 103.403974][ T12] ? __pfx_fib6_add+0x10/0x10
[ 103.403991][ T12] ? consume_skb+0x89/0xb0
[ 103.404011][ T12] ? ip6_ins_rt+0xc0/0x140
[ 103.404028][ T12] ip6_ins_rt+0xd6/0x140
[ 103.404043][ T12] ? __pfx_ip6_ins_rt+0x10/0x10
[ 103.404062][ T12] ? nlmsg_notify+0xe3/0x1a0
[ 103.404072][ T12] ? nlmsg_notify+0x142/0x1a0
[ 103.404085][ T12] __ipv6_ifa_notify+0x4e8/0xc60
[ 103.404109][ T12] ? __pfx___ipv6_ifa_notify+0x10/0x10
[ 103.404128][ T12] ? __cancel_work+0x17f/0x230
[ 103.404144][ T12] ? lockdep_hardirqs_on+0x7a/0x110
[ 103.404165][ T12] addrconf_dad_completed+0x1a1/0xe60
[ 103.404185][ T12] ? __pfx_addrconf_dad_completed+0x10/0x10
[ 103.404200][ T12] ? addrconf_dad_work+0xe57/0x15c0
[ 103.404217][ T12] ? __local_bh_enable_ip+0xd0/0x130
[ 103.404233][ T12] addrconf_dad_work+0xcf8/0x15c0
[ 103.404255][ T12] ? __pfx_addrconf_dad_work+0x10/0x10
[ 103.404271][ T12] ? process_scheduled_works+0xa20/0x14e0
[ 103.404287][ T12] ? rcu_is_watching+0x15/0xb0
[ 103.404306][ T12] ? process_scheduled_works+0xa20/0x14e0
[ 103.404318][ T12] process_scheduled_works+0xa8e/0x14e0
[ 103.404348][ T12] ? __pfx_process_scheduled_works+0x10/0x10
[ 103.404365][ T12] ? assign_work+0x3cf/0x5d0
[ 103.404381][ T12] worker_thread+0xa47/0xfb0
[ 103.404411][ T12] kthread+0x388/0x470
[ 103.404428][ T12] ? __pfx_worker_thread+0x10/0x10
[ 103.404439][ T12] ? __pfx_kthread+0x10/0x10
[ 103.404455][ T12] ret_from_fork+0x514/0xb70
[ 103.404473][ T12] ? __pfx_ret_from_fork+0x10/0x10
[ 103.404489][ T12] ? __switch_to+0xc89/0x1420
[ 103.404505][ T12] ? __pfx_kthread+0x10/0x10
[ 103.404521][ T12] ret_from_fork_asm+0x1a/0x30
[ 103.404549][ T12]
[ 103.404702][ T5314] CPU: 0 UID: 0 PID: 5314 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT(full)
[ 103.404716][ T5314] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 103.404728][ T5314] Workqueue: events drm_fb_helper_damage_work
[ 103.404746][ T5314] Call Trace:
[ 103.404751][ T5314]
[ 103.404755][ T5314] dump_stack_lvl+0xe8/0x150
[ 103.404771][ T5314] should_fail_ex+0x40c/0x560
[ 103.404792][ T5314] should_failslab+0xa8/0x100
[ 103.404808][ T5314] __kmalloc_cache_noprof+0xa8/0x660
[ 103.404821][ T5314] ? drm_atomic_commit_alloc+0xa9/0x100
[ 103.404838][ T5314] ? drm_atomic_commit_alloc+0xa9/0x100
[ 103.404860][ T5314] drm_atomic_commit_alloc+0xa9/0x100
[ 103.404879][ T5314] drm_atomic_helper_dirtyfb+0x129/0xfd0
[ 103.404898][ T5314] ? __lock_acquire+0x683/0x2cf0
[ 103.404917][ T5314] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10
[ 103.404942][ T5314] ? do_raw_spin_lock+0x12b/0x2f0
[ 103.404963][ T5314] drm_fbdev_shmem_helper_fb_dirty+0x160/0x310
[ 103.404982][ T5314] drm_fb_helper_damage_work+0x84c/0xf20
[ 103.405005][ T5314] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 103.405034][ T5314] ? process_scheduled_works+0xa20/0x14e0
[ 103.405050][ T5314] ? rcu_is_watching+0x15/0xb0
[ 103.405068][ T5314] ? process_scheduled_works+0xa20/0x14e0
[ 103.405080][ T5314] process_scheduled_works+0xa8e/0x14e0
[ 103.405111][ T5314] ? __pfx_process_scheduled_works+0x10/0x10
[ 103.405128][ T5314] ? assign_work+0x3cf/0x5d0
[ 103.405144][ T5314] worker_thread+0xa47/0xfb0
[ 103.405165][ T5314] ? __kthread_parkme+0x71/0x1f0
[ 103.405185][ T5314] kthread+0x388/0x470
[ 103.405201][ T5314] ? __pfx_worker_thread+0x10/0x10
[ 103.405213][ T5314] ? __pfx_kthread+0x10/0x10
[ 103.405228][ T5314] ret_from_fork+0x514/0xb70
[ 103.405268][ T5314] ? __pfx_ret_from_fork+0x10/0x10
[ 103.405313][ T5314] ? __switch_to+0xc89/0x1420
[ 103.405329][ T5314] ? __pfx_kthread+0x10/0x10
[ 103.405345][ T5314] ret_from_fork_asm+0x1a/0x30
[ 103.405372][ T5314]
[ 103.604619][ T5314] ------------[ cut here ]------------
[ 103.607464][ T5314] virtio-pci 0000:00:01.0: [drm] Dirty helper failed: ret=-12
[ 103.610939][ T5314] WARNING: drivers/gpu/drm/drm_fbdev_shmem.c:118 at drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310, CPU#0: kworker/0:5/5314
[ 103.616804][ T5314] Modules linked in:
[ 103.618701][ T5314] CPU: 0 UID: 0 PID: 5314 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT(full)
[ 103.622811][ T5314] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 103.627378][ T5314] Workqueue: events drm_fb_helper_damage_work
[ 103.630899][ T5314] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 103.633810][ T5314] Code: 35 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 1a 5b a4 fc 4d 8b 27 48 89 df 4c 89 f6 4c 89 e2 8b 5c 24 04 89 d9 <67> 48 0f b9 3a 89 d8 e9 f7 fe ff ff 89 d9 80 e1 07 fe c1 38 c1 0f
[ 103.641981][ T5314] RSP: 0018:ffffc9000f49f8b8 EFLAGS: 00010246
[ 103.644619][ T5314] RAX: 1ffff11003a4d01a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 103.648159][ T5314] RDX: ffff88801fa3bdc0 RSI: ffffffff8c57c800 RDI: ffffffff90638ee0
[ 103.651531][ T5314] RBP: ffff888000892008 R08: 0000000000000dc0 R09: 00000000ffffffff
[ 103.654826][ T5314] R10: dffffc0000000000 R11: fffffbfff1d94963 R12: ffff88801fa3bdc0
[ 103.658395][ T5314] R13: dffffc0000000000 R14: ffffffff8c57c800 R15: ffff88801d2680d0
[ 103.661846][ T5314] FS: 0000000000000000(0000) GS:ffff88808c549000(0000) knlGS:0000000000000000
[ 103.665516][ T5314] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 103.668428][ T5314] CR2: 00007fc1bab869a0 CR3: 000000000e946000 CR4: 0000000000352ef0
[ 103.672012][ T5314] Call Trace:
[ 103.673501][ T5314]
[ 103.674828][ T5314] drm_fb_helper_damage_work+0x84c/0xf20
[ 103.679168][ T5314] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 103.681834][ T5314] ? process_scheduled_works+0xa20/0x14e0
[ 103.684309][ T5314] ? rcu_is_watching+0x15/0xb0
[ 103.687750][ T5314] ? process_scheduled_works+0xa20/0x14e0
[ 103.690241][ T5314] process_scheduled_works+0xa8e/0x14e0
[ 103.692633][ T5314] ? __pfx_process_scheduled_works+0x10/0x10
[ 103.695176][ T5314] ? assign_work+0x3cf/0x5d0
[ 103.697460][ T5314] worker_thread+0xa47/0xfb0
[ 103.699507][ T5314] ? __kthread_parkme+0x71/0x1f0
[ 103.701671][ T5314] kthread+0x388/0x470
[ 103.703487][ T5314] ? __pfx_worker_thread+0x10/0x10
[ 103.705779][ T5314] ? __pfx_kthread+0x10/0x10
[ 103.707909][ T5314] ret_from_fork+0x514/0xb70
[ 103.709935][ T5314] ? __pfx_ret_from_fork+0x10/0x10
[ 103.712127][ T5314] ? __switch_to+0xc89/0x1420
[ 103.714484][ T5314] ? __pfx_kthread+0x10/0x10
[ 103.716864][ T5314] ret_from_fork_asm+0x1a/0x30
[ 103.718899][ T5314]
[ 103.720220][ T5314] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 103.723280][ T5314] CPU: 0 UID: 0 PID: 5314 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT(full)
[ 103.727148][ T5314] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 103.731245][ T5314] Workqueue: events drm_fb_helper_damage_work
[ 103.733835][ T5314] Call Trace:
[ 103.735312][ T5314]
[ 103.736742][ T5314] vpanic+0x56c/0xa60
[ 103.738528][ T5314] ? __pfx__printk+0x10/0x10
[ 103.740552][ T5314] ? __pfx_vpanic+0x10/0x10
[ 103.742583][ T5314] ? is_bpf_text_address+0x292/0x2b0
[ 103.744885][ T5314] ? is_bpf_text_address+0x26/0x2b0
[ 103.747254][ T5314] panic+0xc5/0xd0
[ 103.748831][ T5314] ? __pfx_panic+0x10/0x10
[ 103.750796][ T5314] ? ret_from_fork_asm+0x1a/0x30
[ 103.752979][ T5314] __warn+0x315/0x4c0
[ 103.754714][ T5314] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 103.757543][ T5314] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 103.760245][ T5314] __report_bug+0x276/0x570
[ 103.762258][ T5314] ? drm_modeset_acquire_fini+0x27/0x180
[ 103.764654][ T5314] ? drm_fbdev_shmem_helper_fb_dirty+0x1e1/0x310
[ 103.767491][ T5314] ? __pfx___report_bug+0x10/0x10
[ 103.769494][ T5314] ? drm_atomic_helper_dirtyfb+0xf27/0xfd0
[ 103.771928][ T5314] ? __pfx_drm_atomic_helper_dirtyfb+0x10/0x10
[ 103.774560][ T5314] report_bug_entry+0x19a/0x290
[ 103.776764][ T5314] ? drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 103.779634][ T5314] ? drm_fbdev_shmem_helper_fb_dirty+0x28d/0x310
[ 103.782440][ T5314] handle_bug+0xce/0x200
[ 103.784261][ T5314] exc_invalid_op+0x1a/0x50
[ 103.786326][ T5314] asm_exc_invalid_op+0x1a/0x20
[ 103.788424][ T5314] RIP: 0010:drm_fbdev_shmem_helper_fb_dirty+0x288/0x310
[ 103.791334][ T5314] Code: 35 fc 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 1a 5b a4 fc 4d 8b 27 48 89 df 4c 89 f6 4c 89 e2 8b 5c 24 04 89 d9 <67> 48 0f b9 3a 89 d8 e9 f7 fe ff ff 89 d9 80 e1 07 fe c1 38 c1 0f
[ 103.799288][ T5314] RSP: 0018:ffffc9000f49f8b8 EFLAGS: 00010246
[ 103.801986][ T5314] RAX: 1ffff11003a4d01a RBX: 00000000fffffff4 RCX: 00000000fffffff4
[ 103.806169][ T5314] RDX: ffff88801fa3bdc0 RSI: ffffffff8c57c800 RDI: ffffffff90638ee0
[ 103.809946][ T5314] RBP: ffff888000892008 R08: 0000000000000dc0 R09: 00000000ffffffff
[ 103.813201][ T5314] R10: dffffc0000000000 R11: fffffbfff1d94963 R12: ffff88801fa3bdc0
[ 103.816641][ T5314] R13: dffffc0000000000 R14: ffffffff8c57c800 R15: ffff88801d2680d0
[ 103.820133][ T5314] ? drm_fbdev_shmem_helper_fb_dirty+0x260/0x310
[ 103.822904][ T5314] drm_fb_helper_damage_work+0x84c/0xf20
[ 103.825345][ T5314] ? __pfx_drm_fb_helper_damage_work+0x10/0x10
[ 103.828013][ T5314] ? process_scheduled_works+0xa20/0x14e0
[ 103.830385][ T5314] ? rcu_is_watching+0x15/0xb0
[ 103.832432][ T5314] ? process_scheduled_works+0xa20/0x14e0
[ 103.834803][ T5314] process_scheduled_works+0xa8e/0x14e0
[ 103.837200][ T5314] ? __pfx_process_scheduled_works+0x10/0x10
[ 103.839744][ T5314] ? assign_work+0x3cf/0x5d0
[ 103.841680][ T5314] worker_thread+0xa47/0xfb0
[ 103.843640][ T5314] ? __kthread_parkme+0x71/0x1f0
[ 103.845735][ T5314] kthread+0x388/0x470
[ 103.847509][ T5314] ? __pfx_worker_thread+0x10/0x10
[ 103.849650][ T5314] ? __pfx_kthread+0x10/0x10
[ 103.851582][ T5314] ret_from_fork+0x514/0xb70
[ 103.853586][ T5314] ? __pfx_ret_from_fork+0x10/0x10
[ 103.855748][ T5314] ? __switch_to+0xc89/0x1420
[ 103.857780][ T5314] ? __pfx_kthread+0x10/0x10
[ 103.859668][ T5314] ret_from_fork_asm+0x1a/0x30
[ 103.861720][ T5314]
[ 103.863420][ T5314] Kernel Offset: disabled
[ 103.865256][ T5314] Rebooting in 86400 seconds..