vivid-012: V4L2 transmitter device registered as radio25 vivid-012: V4L2 metadata capture device registered as video53 vivid-012: V4L2 metadata output device registered as video54 vivid-012: V4L2 touch capture device registered as v4l-touch12 vivid-013: using multiplanar format API vivid-013: CEC adapter cec26 registered for HDMI input 0 vivid-013: V4L2 capture device registered as video55 vivid-013: CEC adapter cec27 registered for HDMI output 0 vivid-013: V4L2 output device registered as video56 vivid-013: V4L2 capture device registered as vbi26, supports raw and sliced VBI vivid-013: V4L2 output device registered as vbi27, supports raw and sliced VBI vivid-013: V4L2 capture device registered as swradio13 vivid-013: V4L2 receiver device registered as radio26 vivid-013: V4L2 transmitter device registered as radio27 vivid-013: V4L2 metadata capture device registered as video57 vivid-013: V4L2 metadata output device registered as video58 vivid-013: V4L2 touch capture device registered as v4l-touch13 vivid-014: using single planar format API vivid-014: CEC adapter cec28 registered for HDMI input 0 vivid-014: V4L2 capture device registered as video59 vivid-014: CEC adapter cec29 registered for HDMI output 0 vivid-014: V4L2 output device registered as video60 vivid-014: V4L2 capture device registered as vbi28, supports raw and sliced VBI vivid-014: V4L2 output device registered as vbi29, supports raw and sliced VBI vivid-014: V4L2 capture device registered as swradio14 vivid-014: V4L2 receiver device registered as radio28 vivid-014: V4L2 transmitter device registered as radio29 vivid-014: V4L2 metadata capture device registered as video61 vivid-014: V4L2 metadata output device registered as video62 vivid-014: V4L2 touch capture device registered as v4l-touch14 vivid-015: using multiplanar format API vivid-015: CEC adapter cec30 registered for HDMI input 0 vivid-015: V4L2 capture device registered as video63 vivid-015: CEC adapter cec31 registered for HDMI output 0 vivid-015: V4L2 output device registered as video64 vivid-015: V4L2 capture device registered as vbi30, supports raw and sliced VBI vivid-015: V4L2 output device registered as vbi31, supports raw and sliced VBI vivid-015: V4L2 capture device registered as swradio15 vivid-015: V4L2 receiver device registered as radio30 vivid-015: V4L2 transmitter device registered as radio31 vivid-015: V4L2 metadata capture device registered as video65 vivid-015: V4L2 metadata output device registered as video66 vivid-015: V4L2 touch capture device registered as v4l-touch15 vim2m vim2m.0: Device registered as /dev/video0 vicodec vicodec.0: Device 'stateful-encoder' registered as /dev/video68 vicodec vicodec.0: Device 'stateful-decoder' registered as /dev/video69 vicodec vicodec.0: Device 'stateless-decoder' registered as /dev/video70 dvbdev: DVB: registering new adapter (dvb_vidtv_bridge) i2c i2c-0: DVB: registering adapter 0 frontend 0 (Dummy demod for DVB-T/T2/C/S/S2)... dvbdev: dvb_create_media_entity: media entity 'Dummy demod for DVB-T/T2/C/S/S2' registered. BUG: sleeping function called from invalid context at mm/page_alloc.c:5179 in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 1, name: swapper/0 2 locks held by swapper/0/1: #0: ffffffff8d4acda8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffffffff8d4acda8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1001 [inline] #0: ffffffff8d4acda8 (&dev->mutex){....}-{3:3}, at: device_driver_attach+0xba/0x290 drivers/base/dd.c:1032 #1: ffff8880b9c31620 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 mm/page_alloc.c:5291 irq event stamp: 924846 hardirqs last enabled at (924845): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (924845): [] _raw_spin_unlock_irqrestore+0x50/0x70 kernel/locking/spinlock.c:191 hardirqs last disabled at (924846): [] __alloc_pages_bulk+0x1017/0x1870 mm/page_alloc.c:5291 softirqs last enabled at (924628): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (924628): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 softirqs last disabled at (924621): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (924621): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:96 ___might_sleep.cold+0x1f1/0x237 kernel/sched/core.c:9153 prepare_alloc_pages+0x3da/0x580 mm/page_alloc.c:5179 __alloc_pages+0x12f/0x500 mm/page_alloc.c:5375 alloc_page_interleave+0x1e/0x200 mm/mempolicy.c:2147 alloc_pages+0x238/0x2a0 mm/mempolicy.c:2270 stack_depot_save+0x39d/0x4e0 lib/stackdepot.c:303 save_stack+0x15e/0x1e0 mm/page_owner.c:120 __set_page_owner+0x50/0x290 mm/page_owner.c:181 prep_new_page mm/page_alloc.c:2445 [inline] __alloc_pages_bulk+0x8b9/0x1870 mm/page_alloc.c:5313 alloc_pages_bulk_array_node include/linux/gfp.h:557 [inline] vm_area_alloc_pages mm/vmalloc.c:2775 [inline] __vmalloc_area_node mm/vmalloc.c:2845 [inline] __vmalloc_node_range+0x39d/0x960 mm/vmalloc.c:2947 __vmalloc_node mm/vmalloc.c:2996 [inline] vmalloc+0x67/0x80 mm/vmalloc.c:3029 dvb_dmx_init+0x18f/0xb90 drivers/media/dvb-core/dvb_demux.c:1257 vidtv_bridge_dmx_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:328 [inline] vidtv_bridge_dvb_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:435 [inline] vidtv_bridge_probe+0x8c2/0xcb0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:508 platform_probe+0xfc/0x1f0 drivers/base/platform.c:1447 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 device_driver_attach+0x228/0x290 drivers/base/dd.c:1039 __driver_attach+0x190/0x340 drivers/base/dd.c:1117 bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:305 bus_add_driver+0x3a9/0x630 drivers/base/bus.c:622 driver_register+0x220/0x3a0 drivers/base/driver.c:171 vidtv_bridge_init+0x37/0x64 drivers/media/test-drivers/vidtv/vidtv_bridge.c:596 do_one_initcall+0x103/0x650 init/main.c:1246 do_initcall_level init/main.c:1319 [inline] do_initcalls init/main.c:1335 [inline] do_basic_setup init/main.c:1355 [inline] kernel_init_freeable+0x6b8/0x741 init/main.c:1557 kernel_init+0x1a/0x1d0 init/main.c:1449 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ============================================ WARNING: possible recursive locking detected 5.13.0-syzkaller #0 Tainted: G W -------------------------------------------- swapper/0/1 is trying to acquire lock: ffff8880b9c31620 (lock#2){-.-.}-{2:2}, at: rmqueue_pcplist mm/page_alloc.c:3675 [inline] ffff8880b9c31620 (lock#2){-.-.}-{2:2}, at: rmqueue mm/page_alloc.c:3713 [inline] ffff8880b9c31620 (lock#2){-.-.}-{2:2}, at: get_page_from_freelist+0x486/0x2f80 mm/page_alloc.c:4175 but task is already holding lock: ffff8880b9c31620 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 mm/page_alloc.c:5291 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#2); lock(lock#2); *** DEADLOCK *** May be due to missing lock nesting notation 2 locks held by swapper/0/1: #0: ffffffff8d4acda8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:742 [inline] #0: ffffffff8d4acda8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1001 [inline] #0: ffffffff8d4acda8 (&dev->mutex){....}-{3:3}, at: device_driver_attach+0xba/0x290 drivers/base/dd.c:1032 #1: ffff8880b9c31620 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 mm/page_alloc.c:5291 stack backtrace: CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:96 print_deadlock_bug kernel/locking/lockdep.c:2944 [inline] check_deadlock kernel/locking/lockdep.c:2987 [inline] validate_chain kernel/locking/lockdep.c:3776 [inline] __lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5015 lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 local_lock_acquire include/linux/local_lock_internal.h:42 [inline] rmqueue_pcplist mm/page_alloc.c:3675 [inline] rmqueue mm/page_alloc.c:3713 [inline] get_page_from_freelist+0x4aa/0x2f80 mm/page_alloc.c:4175 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5386 alloc_page_interleave+0x1e/0x200 mm/mempolicy.c:2147 alloc_pages+0x238/0x2a0 mm/mempolicy.c:2270 stack_depot_save+0x39d/0x4e0 lib/stackdepot.c:303 save_stack+0x15e/0x1e0 mm/page_owner.c:120 __set_page_owner+0x50/0x290 mm/page_owner.c:181 prep_new_page mm/page_alloc.c:2445 [inline] __alloc_pages_bulk+0x8b9/0x1870 mm/page_alloc.c:5313 alloc_pages_bulk_array_node include/linux/gfp.h:557 [inline] vm_area_alloc_pages mm/vmalloc.c:2775 [inline] __vmalloc_area_node mm/vmalloc.c:2845 [inline] __vmalloc_node_range+0x39d/0x960 mm/vmalloc.c:2947 __vmalloc_node mm/vmalloc.c:2996 [inline] vmalloc+0x67/0x80 mm/vmalloc.c:3029 dvb_dmx_init+0x18f/0xb90 drivers/media/dvb-core/dvb_demux.c:1257 vidtv_bridge_dmx_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:328 [inline] vidtv_bridge_dvb_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:435 [inline] vidtv_bridge_probe+0x8c2/0xcb0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:508 platform_probe+0xfc/0x1f0 drivers/base/platform.c:1447 really_probe+0x291/0xf60 drivers/base/dd.c:576 driver_probe_device+0x298/0x410 drivers/base/dd.c:763 device_driver_attach+0x228/0x290 drivers/base/dd.c:1039 __driver_attach+0x190/0x340 drivers/base/dd.c:1117 bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:305 bus_add_driver+0x3a9/0x630 drivers/base/bus.c:622 driver_register+0x220/0x3a0 drivers/base/driver.c:171 vidtv_bridge_init+0x37/0x64 drivers/media/test-drivers/vidtv/vidtv_bridge.c:596 do_one_initcall+0x103/0x650 init/main.c:1246 do_initcall_level init/main.c:1319 [inline] do_initcalls init/main.c:1335 [inline] do_basic_setup init/main.c:1355 [inline] kernel_init_freeable+0x6b8/0x741 init/main.c:1557 kernel_init+0x1a/0x1d0 init/main.c:1449 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. vidtv vidtv.0: Successfully initialized vidtv! usbcore: registered new interface driver radioshark usbcore: registered new interface driver radioshark2 usbcore: registered new interface driver dsbr100 usbcore: registered new interface driver radio-si470x usbcore: registered new interface driver radio-usb-si4713 usbcore: registered new interface driver radio-mr800 usbcore: registered new interface driver radio-keene usbcore: registered new interface driver radio-ma901 usbcore: registered new interface driver radio-raremono general protection fault, probably for non-canonical address 0xdffffc0000000097: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ptp_clock_register+0x5b1/0xce0 drivers/ptp/ptp_clock.c:239 Code: 0f 85 38 06 00 00 4d 89 a7 10 01 00 00 e8 f7 9c 51 fb 49 8d bd b8 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 06 00 00 4d 8b bd b8 04 00 00 4d 85 ff 74 51 RSP: 0000:ffffc90000c67cc8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 1ffff9200018cf9f RCX: 0000000000000000 RDX: 0000000000000097 RSI: ffffffff8623e789 RDI: 00000000000004b8 RBP: ffffffff90d082a8 R08: ffff8881475d4648 R09: 0000000000000000 R10: ffffed1028ebab29 R11: 0000000000000000 R12: ffff8881475d4000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff90d082a8 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000be8e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ptp_kvm_init+0xe5/0x11b drivers/ptp/ptp_kvm_common.c:148 do_one_initcall+0x103/0x650 init/main.c:1246 do_initcall_level init/main.c:1319 [inline] do_initcalls init/main.c:1335 [inline] do_basic_setup init/main.c:1355 [inline] kernel_init_freeable+0x6b8/0x741 init/main.c:1557 kernel_init+0x1a/0x1d0 init/main.c:1449 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 8cb38d1070153f11 ]--- RIP: 0010:ptp_clock_register+0x5b1/0xce0 drivers/ptp/ptp_clock.c:239 Code: 0f 85 38 06 00 00 4d 89 a7 10 01 00 00 e8 f7 9c 51 fb 49 8d bd b8 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 06 00 00 4d 8b bd b8 04 00 00 4d 85 ff 74 51 RSP: 0000:ffffc90000c67cc8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 1ffff9200018cf9f RCX: 0000000000000000 RDX: 0000000000000097 RSI: ffffffff8623e789 RDI: 00000000000004b8 RBP: ffffffff90d082a8 R08: ffff8881475d4648 R09: 0000000000000000 R10: ffffed1028ebab29 R11: 0000000000000000 R12: ffff8881475d4000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff90d082a8 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000be8e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400