INFO: task kworker/0:3:117 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:0 pid:117 tgid:117 ppid:2 flags:0x00000000 Workqueue: events nfc_urelease_event_work Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16005 r9:00000000 r8:827d5278 r7:00000002 r6:df9dde6c r5:83623c00 r4:83623c00 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:83623c00 r4:827d5274 [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16005 r9:83623c00 r8:00000000 r7:dddd1280 r6:853a4fc0 r5:853a4fc0 r4:834ca780 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<817ad1d4>] (nfc_urelease_event_work+0x48/0x130 net/nfc/netlink.c:1843) [<817ad18c>] (nfc_urelease_event_work) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:dddd1280 r6:82c16000 r5:853a4fc0 r4:834ca780 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:83623c00 r8:dddd12a0 r7:82604d40 r6:dddd1280 r5:834ca7ac r4:834ca780 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df9c5e90 r8:834c5cc0 r7:834ca780 r6:8026736c r5:83623c00 r4:82eb7cc0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf9ddfb0 to 0xdf9ddff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:82eb7cc0 INFO: task kworker/u4:1:1049 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:1 state:D stack:0 pid:1049 tgid:1049 ppid:2 flags:0x00000000 Workqueue: nfc2_nci_rx_wq nci_rx_work Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:84dd4805 r9:00000000 r8:84f31060 r7:00000002 r6:e0bc1dac r5:83d53000 r4:83d53000 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:83d53000 r4:84f3105c [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:84dd4805 r9:83d53000 r8:00000001 r7:84f3105c r6:00000000 r5:846938fc r4:84f31000 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<817ab854>] (device_lock include/linux/device.h:990 [inline]) [<8185b120>] (mutex_lock) from [<817ab854>] (nfc_targets_found+0x5c/0x124 net/nfc/core.c:778) [<817ab7f8>] (nfc_targets_found) from [<817bbd3c>] (nci_rf_discover_ntf_packet net/nfc/nci/ntf.c:390 [inline]) [<817ab7f8>] (nfc_targets_found) from [<817bbd3c>] (nci_ntf_packet+0xa3c/0xe88 net/nfc/nci/ntf.c:798) r8:00000001 r7:00000000 r6:84693800 r5:8539f300 r4:00000103 [<817bb300>] (nci_ntf_packet) from [<817b89d0>] (nci_rx_work+0x64/0xe4 net/nfc/nci/core.c:1522) r10:84dd4805 r9:83d53000 r8:00000100 r7:846938a4 r6:84693870 r5:84693800 r4:8539f300 [<817b896c>] (nci_rx_work) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:82c0e600 r6:84dd4800 r5:84693870 r4:837a3480 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:83d53000 r8:82c0e620 r7:82604d40 r6:82c0e600 r5:837a34ac r4:837a3480 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df845e90 r8:83c81b80 r7:837a3480 r6:8026736c r5:83d53000 r4:83c810c0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xe0bc1fb0 to 0xe0bc1ff8) 1fa0: 00000000 00000000 00000000 00000000 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:83c810c0 INFO: task kworker/1:4:3673 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:4 state:D stack:0 pid:3673 tgid:3673 ppid:2 flags:0x00000000 Workqueue: events nfc_urelease_event_work Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:84f31214 r7:00000002 r6:dfdf5e6c r5:83e80000 r4:83e80000 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:83e80000 r4:84f31210 [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:83e80000 r8:00000080 r7:00000000 r6:85390d00 r5:84f31210 r4:84f31000 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<817ad238>] (nfc_urelease_event_work+0xac/0x130 net/nfc/netlink.c:1849) [<817ad18c>] (nfc_urelease_event_work) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:85390d00 r4:85002b00 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:83e80000 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:85002b2c r4:85002b00 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df875e90 r8:8504f100 r7:85002b00 r6:8026736c r5:83e80000 r4:8504f0c0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdfdf5fb0 to 0xdfdf5ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:8504f0c0 INFO: task kworker/1:0:17574 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:0 pid:17574 tgid:17574 ppid:2 flags:0x00000000 Workqueue: events nfc_urelease_event_work Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:827d5278 r7:00000002 r6:ecc05e6c r5:836f1800 r4:836f1800 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:836f1800 r4:827d5274 [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:836f1800 r8:00000080 r7:ddde4280 r6:854c3340 r5:854c3340 r4:8525ea00 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<817ad1d4>] (nfc_urelease_event_work+0x48/0x130 net/nfc/netlink.c:1843) [<817ad18c>] (nfc_urelease_event_work) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:854c3340 r4:8525ea00 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:836f1800 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:8525ea2c r4:8525ea00 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:dfdf5e90 r8:85390300 r7:8525ea00 r6:8026736c r5:836f1800 r4:85089740 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xecc05fb0 to 0xecc05ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:85089740 INFO: task syz-executor.1:18327 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:18327 tgid:18327 ppid:2991 flags:0x00000005 Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:ee77deac r9:00000002 r8:ee77de54 r7:82e6ec00 r6:ee77dea4 r5:00000000 r4:82e6ec00 [<81857970>] (schedule) from [<8185ef44>] (schedule_timeout+0xe4/0x114 kernel/time/timer.c:2159) r5:00000000 r4:7fffffff [<8185ee60>] (schedule_timeout) from [<818585dc>] (do_wait_for_common kernel/sched/completion.c:95 [inline]) [<8185ee60>] (schedule_timeout) from [<818585dc>] (__wait_for_common kernel/sched/completion.c:116 [inline]) [<8185ee60>] (schedule_timeout) from [<818585dc>] (wait_for_common kernel/sched/completion.c:127 [inline]) [<8185ee60>] (schedule_timeout) from [<818585dc>] (wait_for_completion+0x6c/0x144 kernel/sched/completion.c:148) r7:82e6ec00 r6:ee77dea4 r5:ee77dea8 r4:7fffffff [<81858570>] (wait_for_completion) from [<80263784>] (__flush_workqueue+0x118/0x5d0 kernel/workqueue.c:3198) r10:00000006 r9:85025410 r8:8502543c r7:84693830 r6:85025400 r5:ee77de98 r4:00000001 [<8026366c>] (__flush_workqueue) from [<817b8380>] (nci_close_device+0x8c/0x130 net/nfc/nci/core.c:579) r10:00000006 r9:82e6ec00 r8:842b5b50 r7:84693830 r6:84693818 r5:846938c4 r4:84693800 [<817b82f4>] (nci_close_device) from [<817b8b28>] (nci_unregister_device+0x24/0x98 net/nfc/nci/core.c:1297) r7:84693800 r6:830e5870 r5:000e001b r4:853d3280 [<817b8b04>] (nci_unregister_device) from [<80a85378>] (virtual_ncidev_close+0x18/0x30 drivers/nfc/virtual_ncidev.c:168) r9:82e6ec00 r8:842b5b50 r7:83a1dac0 r6:830e5870 r5:000e001b r4:853d3280 [<80a85360>] (virtual_ncidev_close) from [<804eb124>] (__fput+0x84/0x2d4 fs/file_table.c:376) r5:000e001b r4:85394cc0 [<804eb0a0>] (__fput) from [<804eb430>] (__fput_sync+0x3c/0x40 fs/file_table.c:461) r9:82e6ec00 r8:80200288 r7:00000006 r6:00000000 r5:85394cc0 r4:00000000 [<804eb3f4>] (__fput_sync) from [<804e6af8>] (__do_sys_close fs/open.c:1554 [inline]) [<804eb3f4>] (__fput_sync) from [<804e6af8>] (sys_close+0x30/0x64 fs/open.c:1539) [<804e6ac8>] (sys_close) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xee77dfa8 to 0xee77dff0) dfa0: 00000003 00000000 00000003 00000002 00000000 00000000 dfc0: 00000003 00000000 00000000 00000006 0014d490 00140000 00140000 0014d490 dfe0: 2e960000 7e8643d8 00091164 0004f5dc r5:00000000 r4:00000003 INFO: task syz-executor.1:18328 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:18328 tgid:18327 ppid:2991 flags:0x00000005 Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:00000000 r9:00000000 r8:827c4670 r7:00000002 r6:ee729b2c r5:82e6d400 r4:82e6d400 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:82e6d400 r4:827c466c [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:00000000 r9:ee729c4c r8:00000000 r7:0000002c r6:8539f240 r5:84de2480 r4:821954c0 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<81464b24>] (genl_lock net/netlink/genetlink.c:33 [inline]) [<8185b120>] (mutex_lock) from [<81464b24>] (genl_op_lock net/netlink/genetlink.c:58 [inline]) [<8185b120>] (mutex_lock) from [<81464b24>] (genl_op_lock net/netlink/genetlink.c:55 [inline]) [<8185b120>] (mutex_lock) from [<81464b24>] (genl_rcv_msg+0x308/0x3d4 net/netlink/genetlink.c:1207) [<8146481c>] (genl_rcv_msg) from [<814630d8>] (netlink_rcv_skb+0xc0/0x120 net/netlink/af_netlink.c:2543) r10:00000000 r9:84f3157c r8:828f61c0 r7:0000002c r6:84de2480 r5:8146481c r4:8539f240 [<81463018>] (netlink_rcv_skb) from [<81464200>] (genl_rcv+0x2c/0x3c net/netlink/genetlink.c:1217) r7:8539f240 r6:82f23500 r5:827c4680 r4:8539f240 [<814641d4>] (genl_rcv) from [<81462610>] (netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]) [<814641d4>] (genl_rcv) from [<81462610>] (netlink_unicast+0x194/0x290 net/netlink/af_netlink.c:1367) r5:0000002c r4:82e08400 [<8146247c>] (netlink_unicast) from [<814628e8>] (netlink_sendmsg+0x1dc/0x434 net/netlink/af_netlink.c:1908) r9:00000000 r8:00000000 r7:84f31400 r6:0000002c r5:8539f240 r4:ee729f38 [<8146270c>] (netlink_sendmsg) from [<8134bcc0>] (sock_sendmsg_nosec net/socket.c:730 [inline]) [<8146270c>] (netlink_sendmsg) from [<8134bcc0>] (__sock_sendmsg+0x44/0x78 net/socket.c:745) r10:00000000 r9:ee729dd4 r8:ee729dd4 r7:00000000 r6:84964c80 r5:ee729f38 r4:00000000 [<8134bc7c>] (__sock_sendmsg) from [<8134cb6c>] (____sys_sendmsg+0x22c/0x2a8 net/socket.c:2584) r7:00000000 r6:00000000 r5:84964c80 r4:ee729f38 [<8134c940>] (____sys_sendmsg) from [<8134e8c8>] (___sys_sendmsg+0x9c/0xd0 net/socket.c:2638) r10:ee729e34 r9:20000780 r8:00000000 r7:00000000 r6:84964c80 r5:ee729f38 r4:00000000 [<8134e82c>] (___sys_sendmsg) from [<8134edc4>] (__sys_sendmsg net/socket.c:2667 [inline]) [<8134e82c>] (___sys_sendmsg) from [<8134edc4>] (__do_sys_sendmsg net/socket.c:2676 [inline]) [<8134e82c>] (___sys_sendmsg) from [<8134edc4>] (sys_sendmsg+0x78/0xbc net/socket.c:2674) r10:00000128 r9:82e6d400 r8:80200288 r7:00000000 r6:20000780 r5:84964c80 r4:00000000 [<8134ed4c>] (sys_sendmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xee729fa8 to 0xee729ff0) 9fa0: 00000000 00000000 00000005 20000780 00000000 00000000 9fc0: 00000000 00000000 0014c2c8 00000128 7e864326 7e864327 003d0f00 76bdb0fc 9fe0: 76bdaf08 76bdaef8 000167e8 00050bd0 r7:00000128 r6:0014c2c8 r5:00000000 r4:00000000 INFO: task syz-executor.1:18338 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:18338 tgid:18327 ppid:2991 flags:0x00000005 Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:846938c4 r9:00000000 r8:846938c8 r7:00000002 r6:ee765a8c r5:84081800 r4:84081800 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:84081800 r4:846938c4 [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:846938c4 r9:00000001 r8:846938c4 r7:00000000 r6:84693800 r5:000000a0 r4:84693800 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<817ba098>] (nci_request net/nfc/nci/core.c:149 [inline]) [<8185b120>] (mutex_lock) from [<817ba098>] (nci_start_poll+0x9c/0x394 net/nfc/nci/core.c:854) [<817b9ffc>] (nci_start_poll) from [<817ac790>] (nfc_start_poll+0x74/0xd8 net/nfc/core.c:225) r10:828f61c0 r9:ee765c4c r8:00000000 r7:84f3105c r6:000000a0 r5:00000000 r4:84f31000 [<817ac71c>] (nfc_start_poll) from [<817ada5c>] (nfc_genl_start_poll+0x70/0xfc net/nfc/netlink.c:828) r7:84f31210 r6:ee765bec r5:000000a0 r4:84f31000 [<817ad9ec>] (nfc_genl_start_poll) from [<81464a9c>] (genl_family_rcv_msg_doit net/netlink/genetlink.c:1113 [inline]) [<817ad9ec>] (nfc_genl_start_poll) from [<81464a9c>] (genl_family_rcv_msg net/netlink/genetlink.c:1193 [inline]) [<817ad9ec>] (nfc_genl_start_poll) from [<81464a9c>] (genl_rcv_msg+0x280/0x3d4 net/netlink/genetlink.c:1208) r9:ee765c4c r8:85221100 r7:00000000 r6:8539fe40 r5:84de2010 r4:821954c0 [<8146481c>] (genl_rcv_msg) from [<814630d8>] (netlink_rcv_skb+0xc0/0x120 net/netlink/af_netlink.c:2543) r10:00000000 r9:84f3157c r8:828f61c0 r7:00000024 r6:84de2000 r5:8146481c r4:8539fe40 [<81463018>] (netlink_rcv_skb) from [<81464200>] (genl_rcv+0x2c/0x3c net/netlink/genetlink.c:1217) r7:8539fe40 r6:82f23500 r5:827c4680 r4:8539fe40 [<814641d4>] (genl_rcv) from [<81462610>] (netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]) [<814641d4>] (genl_rcv) from [<81462610>] (netlink_unicast+0x194/0x290 net/netlink/af_netlink.c:1367) r5:00000024 r4:82e08400 [<8146247c>] (netlink_unicast) from [<814628e8>] (netlink_sendmsg+0x1dc/0x434 net/netlink/af_netlink.c:1908) r9:00000000 r8:00000000 r7:84f31400 r6:00000024 r5:8539fe40 r4:ee765f38 [<8146270c>] (netlink_sendmsg) from [<8134bcc0>] (sock_sendmsg_nosec net/socket.c:730 [inline]) [<8146270c>] (netlink_sendmsg) from [<8134bcc0>] (__sock_sendmsg+0x44/0x78 net/socket.c:745) r10:00000000 r9:ee765dd4 r8:ee765dd4 r7:00000000 r6:84964c80 r5:ee765f38 r4:00000000 [<8134bc7c>] (__sock_sendmsg) from [<8134cb6c>] (____sys_sendmsg+0x22c/0x2a8 net/socket.c:2584) r7:00000000 r6:00000000 r5:84964c80 r4:ee765f38 [<8134c940>] (____sys_sendmsg) from [<8134e8c8>] (___sys_sendmsg+0x9c/0xd0 net/socket.c:2638) r10:ee765e34 r9:20000440 r8:00000000 r7:00000000 r6:84964c80 r5:ee765f38 r4:00000000 [<8134e82c>] (___sys_sendmsg) from [<8134edc4>] (__sys_sendmsg net/socket.c:2667 [inline]) [<8134e82c>] (___sys_sendmsg) from [<8134edc4>] (__do_sys_sendmsg net/socket.c:2676 [inline]) [<8134e82c>] (___sys_sendmsg) from [<8134edc4>] (sys_sendmsg+0x78/0xbc net/socket.c:2674) r10:00000128 r9:84081800 r8:80200288 r7:00000000 r6:20000440 r5:84964c80 r4:00000000 [<8134ed4c>] (sys_sendmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xee765fa8 to 0xee765ff0) 5fa0: 00000000 00000000 00000005 20000440 00000000 00000000 5fc0: 00000000 00000000 0014c358 00000128 7e864326 7e864327 003d0f00 76bba0fc 5fe0: 76bb9f08 76bb9ef8 000167e8 00050bd0 r7:00000128 r6:0014c358 r5:00000000 r4:00000000 INFO: task kworker/1:1:18354 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:0 pid:18354 tgid:18354 ppid:2 flags:0x00000000 Workqueue: events nfc_urelease_event_work Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:827d5278 r7:00000002 r6:ee91de6c r5:84080000 r4:84080000 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:84080000 r4:827d5274 [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:84080000 r8:00000080 r7:ddde4280 r6:8520de00 r5:8520de00 r4:8533bd80 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<817ad1d4>] (nfc_urelease_event_work+0x48/0x130 net/nfc/netlink.c:1843) [<817ad18c>] (nfc_urelease_event_work) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:8520de00 r4:8533bd80 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:84080000 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:8533bdac r4:8533bd80 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:e01b5e90 r8:85277880 r7:8533bd80 r6:8026736c r5:84080000 r4:85277c40 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xee91dfb0 to 0xee91dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:85277c40 INFO: task kworker/1:5:18381 blocked for more than 430 seconds. Not tainted 6.8.0-rc1-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:5 state:D stack:0 pid:18381 tgid:18381 ppid:2 flags:0x00000000 Workqueue: events nfc_urelease_event_work Backtrace: [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:82c16205 r9:00000000 r8:827d5278 r7:00000002 r6:ee945e6c r5:82f0ec00 r4:82f0ec00 [<81857970>] (schedule) from [<81857f68>] (schedule_preempt_disabled+0x18/0x24 kernel/sched/core.c:6874) r5:82f0ec00 r4:827d5274 [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock_common kernel/locking/mutex.c:684 [inline]) [<81857f50>] (schedule_preempt_disabled) from [<8185a850>] (__mutex_lock.constprop.0+0x2e8/0xae0 kernel/locking/mutex.c:752) [<8185a568>] (__mutex_lock.constprop.0) from [<8185b11c>] (__mutex_lock_slowpath+0x14/0x18 kernel/locking/mutex.c:1040) r10:82c16205 r9:82f0ec00 r8:00000080 r7:ddde4280 r6:853d1d40 r5:853d1d40 r4:8533b380 [<8185b108>] (__mutex_lock_slowpath) from [<8185b15c>] (mutex_lock+0x3c/0x40 kernel/locking/mutex.c:286) [<8185b120>] (mutex_lock) from [<817ad1d4>] (nfc_urelease_event_work+0x48/0x130 net/nfc/netlink.c:1843) [<817ad18c>] (nfc_urelease_event_work) from [<80267064>] (process_one_work+0x19c/0x4a4 kernel/workqueue.c:2633) r7:ddde4280 r6:82c16200 r5:853d1d40 r4:8533b380 [<80266ec8>] (process_one_work) from [<802675ac>] (process_scheduled_works kernel/workqueue.c:2706 [inline]) [<80266ec8>] (process_one_work) from [<802675ac>] (worker_thread+0x240/0x48c kernel/workqueue.c:2787) r10:61c88647 r9:82f0ec00 r8:ddde42a0 r7:82604d40 r6:ddde4280 r5:8533b3ac r4:8533b380 [<8026736c>] (worker_thread) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:eb2c1e90 r8:8520d440 r7:8533b380 r6:8026736c r5:82f0ec00 r4:8520d680 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xee945fb0 to 0xee945ff8) 5fa0: 00000000 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:8520d680 NMI backtrace for cpu 1 CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<8183590c>] (dump_backtrace) from [<81835a08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:00000013 r5:60000093 r4:81fbd1a4 [<818359f0>] (show_stack) from [<81852efc>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818359f0>] (show_stack) from [<81852efc>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<81852eb4>] (dump_stack_lvl) from [<81852f20>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000001 r4:00000001 [<81852f08>] (dump_stack) from [<81822d38>] (nmi_cpu_backtrace+0x160/0x17c lib/nmi_backtrace.c:113) [<81822bd8>] (nmi_cpu_backtrace) from [<81822e84>] (nmi_trigger_cpumask_backtrace+0x130/0x1d8 lib/nmi_backtrace.c:62) r7:00000001 r6:8260c494 r5:8261a7d8 r4:ffffffff [<81822d54>] (nmi_trigger_cpumask_backtrace) from [<80210574>] (arch_trigger_cpumask_backtrace+0x18/0x1c arch/arm/kernel/smp.c:851) r9:00000001 r8:82894eb8 r7:8260c5ec r6:00007f28 r5:8261adc8 r4:83422c2c [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347cf4>] (trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347cf4>] (check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]) [<8021055c>] (arch_trigger_cpumask_backtrace) from [<80347cf4>] (watchdog+0x48c/0x59c kernel/hung_task.c:379) [<80347868>] (watchdog) from [<8026e888>] (kthread+0x104/0x134 kernel/kthread.c:388) r10:00000000 r9:df819e58 r8:82e67440 r7:00000000 r6:80347868 r5:82ee1800 r4:82f458c0 [<8026e784>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134) Exception stack(0xdf8d9fb0 to 0xdf8d9ff8) 9fa0: 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026e784 r4:82f458c0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2795 Comm: syslogd Not tainted 6.8.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express PC is at kmap_local_sched_in kernel/sched/core.c:5180 [inline] PC is at finish_task_switch+0x8c/0x294 kernel/sched/core.c:5282 LR is at __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline] LR is at _raw_spin_unlock+0x2c/0x50 kernel/locking/spinlock.c:186 pc : [<8027b490>] lr : [<8185fe78>] psr: 20000013 sp : ec911c48 ip : ec911c38 fp : ec911c8c r10: 00000001 r9 : 8408bc00 r8 : 83ef8c00 r7 : a3ec4f30 r6 : 81857168 r5 : dddd1600 r4 : 00000000 r3 : 8408bc00 r2 : 00000001 r1 : 81fbd1a4 r0 : 00000001 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 842b87c0 DAC: fffffffd Backtrace: [<8027b404>] (finish_task_switch) from [<81857168>] (context_switch kernel/sched/core.c:5403 [inline]) [<8027b404>] (finish_task_switch) from [<81857168>] (__schedule+0x404/0xc0c kernel/sched/core.c:6727) r10:00000000 r9:842dcc00 r8:b4424e1a r7:a3ec4f30 r6:8408bc00 r5:dddd1600 r4:83ef8c00 [<81856d64>] (__schedule) from [<8185799c>] (__schedule_loop kernel/sched/core.c:6802 [inline]) [<81856d64>] (__schedule) from [<8185799c>] (schedule+0x2c/0xb8 kernel/sched/core.c:6817) r10:00000000 r9:82fa2da8 r8:ec911dc8 r7:8408bc00 r6:8408bc00 r5:00000000 r4:8408bc00 [<81857970>] (schedule) from [<8185ef44>] (schedule_timeout+0xe4/0x114 kernel/time/timer.c:2159) r5:00000000 r4:7fffffff [<8185ee60>] (schedule_timeout) from [<81365dbc>] (__skb_wait_for_more_packets+0x128/0x178 net/core/datagram.c:121) r7:ec911dd0 r6:8408bc00 r5:82fa2da8 r4:82fa2d00 [<81365c94>] (__skb_wait_for_more_packets) from [<815f511c>] (__unix_dgram_recvmsg+0xc4/0x4d8 net/unix/af_unix.c:2396) r10:00000000 r9:82fa2da8 r8:ec911dd0 r7:00000000 r6:82fa2f34 r5:82fa2d00 r4:815f5530 [<815f5058>] (__unix_dgram_recvmsg) from [<815f5574>] (unix_dgram_recvmsg+0x44/0x4c net/unix/af_unix.c:2485) r10:00000001 r9:00000000 r8:008cd1d0 r7:00000000 r6:8314a780 r5:ec911e68 r4:815f5530 [<815f5530>] (unix_dgram_recvmsg) from [<8134b868>] (sock_recvmsg_nosec net/socket.c:1046 [inline]) [<815f5530>] (unix_dgram_recvmsg) from [<8134b868>] (sock_recvmsg+0x50/0x78 net/socket.c:1068) r4:815f5530 [<8134b818>] (sock_recvmsg) from [<8134b934>] (sock_read_iter+0xa4/0xfc net/socket.c:1138) r7:8314a780 r6:82eb1780 r5:ec911f08 r4:ec911ef0 [<8134b890>] (sock_read_iter) from [<804e912c>] (call_read_iter include/linux/fs.h:2079 [inline]) [<8134b890>] (sock_read_iter) from [<804e912c>] (new_sync_read fs/read_write.c:395 [inline]) [<8134b890>] (sock_read_iter) from [<804e912c>] (vfs_read+0x2e4/0x314 fs/read_write.c:476) r7:00000000 r6:8408bc00 r5:000000ff r4:82eb1780 [<804e8e48>] (vfs_read) from [<804e9ba4>] (ksys_read+0xc4/0xf8 fs/read_write.c:619) r10:00000003 r9:8408bc00 r8:80200288 r7:000000ff r6:008cd1d0 r5:82eb1780 r4:82eb1780 [<804e9ae0>] (ksys_read) from [<804e9be8>] (__do_sys_read fs/read_write.c:629 [inline]) [<804e9ae0>] (ksys_read) from [<804e9be8>] (sys_read+0x10/0x14 fs/read_write.c:627) r7:00000003 r6:008cd2d0 r5:76fd95a0 r4:fffffc00 [<804e9bd8>] (sys_read) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xec911fa8 to 0xec911ff0) 1fa0: fffffc00 76fd95a0 00000000 008cd1d0 000000ff 00000000 1fc0: fffffc00 76fd95a0 008cd2d0 00000003 00000000 008cd1c8 76fa854c 76fa8548 1fe0: 76fa79f8 7ea71c70 76f1d2ec 76e2b2fc