bisecting cause commit starting from 9dcd936c5312f870955f108e8a1bfebf3eb6f688 building syzkaller on ba6ddb4336e8a17ba03cb9fe9e7ed5c76e115d43 testing commit 9dcd936c5312f870955f108e8a1bfebf3eb6f688 with gcc (GCC) 8.1.0 run #0: OK run #1: crashed: INFO: task hung in evdev_flush run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 all runs: OK # git bisect start 9dcd936c5312f870955f108e8a1bfebf3eb6f688 v4.18 Bisecting: 7495 revisions left to test after this (roughly 13 steps) [c1c2ad82c772966d3cdb9a4852329fa2cf71853a] Merge tag 'edac_for_4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp testing commit c1c2ad82c772966d3cdb9a4852329fa2cf71853a with gcc (GCC) 8.1.0 run #0: crashed: INFO: task hung in evdev_flush run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad c1c2ad82c772966d3cdb9a4852329fa2cf71853a Bisecting: 4309 revisions left to test after this (roughly 12 steps) [0a957467c5fd46142bc9c52758ffc552d4c5e2f7] x86: i8259: Add missing include file testing commit 0a957467c5fd46142bc9c52758ffc552d4c5e2f7 with gcc (GCC) 8.1.0 run #0: crashed: INFO: task hung in evdev_release run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 0a957467c5fd46142bc9c52758ffc552d4c5e2f7 Bisecting: 1595 revisions left to test after this (roughly 11 steps) [958f338e96f874a0d29442396d6adf9c1e17aa2d] Merge branch 'l1tf-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 958f338e96f874a0d29442396d6adf9c1e17aa2d with gcc (GCC) 8.1.0 all runs: OK # git bisect good 958f338e96f874a0d29442396d6adf9c1e17aa2d Bisecting: 854 revisions left to test after this (roughly 10 steps) [2c20443ec221dcb76484b30933593e8ecd836bbd] Merge tag 'acpi-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm testing commit 2c20443ec221dcb76484b30933593e8ecd836bbd with gcc (GCC) 8.1.0 all runs: OK # git bisect good 2c20443ec221dcb76484b30933593e8ecd836bbd Bisecting: 499 revisions left to test after this (roughly 9 steps) [4aa5db22d35588e1a5d2ee88472348ea73d9fb23] Merge branch 'asoc-4.19' into asoc-next testing commit 4aa5db22d35588e1a5d2ee88472348ea73d9fb23 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: OK run #4: crashed: INFO: task hung in evdev_flush run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 4aa5db22d35588e1a5d2ee88472348ea73d9fb23 Bisecting: 177 revisions left to test after this (roughly 8 steps) [caed9d636e857997e923dfe473b9310de645d916] ASoC: Intel: bytcr_rt5651: Reporting button presses testing commit caed9d636e857997e923dfe473b9310de645d916 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good caed9d636e857997e923dfe473b9310de645d916 Bisecting: 89 revisions left to test after this (roughly 7 steps) [c8cb5f775c8dacb605e628a320ded42be3bd9453] ASoC: wcd9335: add CLASS-H Controller support testing commit c8cb5f775c8dacb605e628a320ded42be3bd9453 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: basic kernel testing failed: timed out run #4: basic kernel testing failed: timed out run #5: basic kernel testing failed: timed out run #6: basic kernel testing failed: timed out run #7: OK run #8: OK run #9: OK # git bisect skip c8cb5f775c8dacb605e628a320ded42be3bd9453 Bisecting: 89 revisions left to test after this (roughly 7 steps) [110743189c863e96dc08a581d56c50b965870a3f] ASoC: qdsp6: q6afe-dai: do not close port if its not opened testing commit 110743189c863e96dc08a581d56c50b965870a3f with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 110743189c863e96dc08a581d56c50b965870a3f Bisecting: 86 revisions left to test after this (roughly 7 steps) [fe65324e3f5205072a2d55ac9c63ec77155fa528] ASoC: Intel: Skylake: fix widget handling testing commit fe65324e3f5205072a2d55ac9c63ec77155fa528 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: basic kernel testing failed: timed out run #4: basic kernel testing failed: timed out run #5: OK run #6: crashed: INFO: task hung in evdev_flush run #7: OK run #8: OK run #9: OK # git bisect bad fe65324e3f5205072a2d55ac9c63ec77155fa528 Bisecting: 28 revisions left to test after this (roughly 5 steps) [a0d1d867c262f4ad5d8e4925e2212711ebdbf2b7] ASoC: Intel: bytcr_rt5651: Add mono speaker quirk testing commit a0d1d867c262f4ad5d8e4925e2212711ebdbf2b7 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: basic kernel testing failed: timed out run #4: crashed: INFO: task hung in evdev_release run #5: crashed: INFO: task hung in evdev_flush run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad a0d1d867c262f4ad5d8e4925e2212711ebdbf2b7 Bisecting: 13 revisions left to test after this (roughly 4 steps) [6dc4fa179fb86d2c986b2bc8a8377fe4d8c0428d] ASoC: meson: add axg fifo base driver testing commit 6dc4fa179fb86d2c986b2bc8a8377fe4d8c0428d with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: crashed: INFO: task hung in evdev_release run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad 6dc4fa179fb86d2c986b2bc8a8377fe4d8c0428d Bisecting: 7 revisions left to test after this (roughly 3 steps) [19e023e3befb4cb64b4a81b47a92a0c687672661] ASoC: AMD: For capture have interrupts on I2S->ACP channel testing commit 19e023e3befb4cb64b4a81b47a92a0c687672661 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: basic kernel testing failed: timed out run #4: basic kernel testing failed: timed out run #5: basic kernel testing failed: timed out run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good 19e023e3befb4cb64b4a81b47a92a0c687672661 Bisecting: 3 revisions left to test after this (roughly 2 steps) [791940779d651c2219e97702d2245b5420b0c8ae] ASoC: qdsp6: q6routing: remove component framework related code testing commit 791940779d651c2219e97702d2245b5420b0c8ae with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: basic kernel testing failed: timed out run #4: basic kernel testing failed: timed out run #5: basic kernel testing failed: timed out run #6: basic kernel testing failed: timed out run #7: OK run #8: OK run #9: OK # git bisect skip 791940779d651c2219e97702d2245b5420b0c8ae Bisecting: 3 revisions left to test after this (roughly 2 steps) [bf270262b7b8bb7b48a846c613f74e800abba392] ASoC: hdac_hdmi: Add documentation for power management testing commit bf270262b7b8bb7b48a846c613f74e800abba392 with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: basic kernel testing failed: timed out run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect good bf270262b7b8bb7b48a846c613f74e800abba392 Bisecting: 0 revisions left to test after this (roughly 0 steps) [e32d99af6830c9a8f37b4f2637ef0cdc60fa79fb] ASoC: meson: add axg fifos DT binding documentation testing commit e32d99af6830c9a8f37b4f2637ef0cdc60fa79fb with gcc (GCC) 8.1.0 run #0: basic kernel testing failed: timed out run #1: basic kernel testing failed: timed out run #2: basic kernel testing failed: timed out run #3: basic kernel testing failed: timed out run #4: OK run #5: crashed: INFO: task hung in evdev_release run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad e32d99af6830c9a8f37b4f2637ef0cdc60fa79fb e32d99af6830c9a8f37b4f2637ef0cdc60fa79fb is the first bad commit commit e32d99af6830c9a8f37b4f2637ef0cdc60fa79fb Author: Jerome Brunet Date: Tue Jul 17 17:42:50 2018 +0200 ASoC: meson: add axg fifos DT binding documentation Add the DT bindings documentation for axg's FIFOs: TODDR and FRDDR. Signed-off-by: Jerome Brunet Signed-off-by: Mark Brown :040000 040000 0d25a49b861f4a4278b3eb186977c2e0a914224e a9e2f6e11dd73456e2303045116a10a3a7e0348c M Documentation revisions tested: 17, total time: 4h55m19.804750865s (build: 1h37m18.979827732s, test: 3h11m20.333902084s) first bad commit: e32d99af6830c9a8f37b4f2637ef0cdc60fa79fb ASoC: meson: add axg fifos DT binding documentation cc: ["alsa-devel@alsa-project.org" "broonie@kernel.org" "devicetree@vger.kernel.org" "jbrunet@baylibre.com" "lgirdwood@gmail.com" "linux-kernel@vger.kernel.org" "mark.rutland@arm.com" "robh+dt@kernel.org"] crash: INFO: task hung in evdev_release team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves INFO: task syz-executor2:6879 blocked for more than 140 seconds. Not tainted 4.18.0-rc1+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D22728 6879 5243 0x80000002 Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x836/0x1f40 kernel/sched/core.c:3504 schedule+0xfe/0x460 kernel/sched/core.c:3548 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3606 __mutex_lock_common kernel/locking/mutex.c:834 [inline] __mutex_lock+0xe62/0x1890 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 evdev_close_device drivers/input/evdev.c:447 [inline] evdev_release+0xdd/0x1a0 drivers/input/evdev.c:488 __fput+0x2ec/0x990 fs/file_table.c:209 ____fput+0x9/0x10 fs/file_table.c:243 task_work_run+0x19f/0x240 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1767/0x23b0 kernel/exit.c:865 do_group_exit+0x13d/0x3c0 kernel/exit.c:968 get_signal+0x6c9/0x14b0 kernel/signal.c:2468 do_signal+0x9c/0x21e0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x1ce/0x300 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x587/0x700 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 Code: 0f 7f 28 f3 0f 7f 70 10 f3 0f 7f 78 20 f3 44 0f 7f 40 30 f3 44 0f 7f 48 40 f3 44 0f 7f 50 50 f3 44 0f 7f 58 60 f3 44 0f 7f 60 <70> c3 cc cc cc cc cc 48 8d 74 24 08 48 8b 3c 24 48 8d 05 10 00 00 RSP: 002b:00007f46ee6f8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffea RBX: 0000000000000003 RCX: 0000000000457669 RDX: 0000000020013000 RSI: 000000008040450a RDI: 0000000000000004 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f46ee6f96d4 R13: 00000000004bf430 R14: 00000000004cf230 R15: 00000000ffffffff INFO: task syz-executor4:6886 blocked for more than 140 seconds. Not tainted 4.18.0-rc1+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D22472 6886 5245 0x00000004 Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x836/0x1f40 kernel/sched/core.c:3504 schedule+0xfe/0x460 kernel/sched/core.c:3548 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3606 __mutex_lock_common kernel/locking/mutex.c:834 [inline] __mutex_lock+0xe62/0x1890 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 evdev_close_device drivers/input/evdev.c:447 [inline] evdev_release+0xdd/0x1a0 drivers/input/evdev.c:488 __fput+0x2ec/0x990 fs/file_table.c:209 ____fput+0x9/0x10 fs/file_table.c:243 task_work_run+0x19f/0x240 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:192 [inline] exit_to_usermode_loop+0x267/0x300 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x587/0x700 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x410ff1 Code: 30 48 89 4c 24 10 e8 8e 09 00 00 48 8b 44 24 28 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 36 5d 04 00 48 8b 6c 24 18 48 83 20 c3 cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff RSP: 002b:00007ffe2eae1f00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000410ff1 RDX: 0000000000000000 RSI: 0000000000730488 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffe2eae1e30 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000004 Showing all locks held in the system: 1 lock held by khungtaskd/983: #0: (____ptrval____) (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4461 2 locks held by rsyslogd/5000: #0: (____ptrval____) (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x170/0x1d0 fs/file.c:766 #1: (____ptrval____) (&rq->lock){-.-.}, at: finish_wait+0x119/0x430 kernel/sched/wait.c:364 2 locks held by getty/5090: #0: (____ptrval____) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (____ptrval____) (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2fd/0x1b60 drivers/tty/n_tty.c:2131 2 locks held by getty/5091: #0: (____ptrval____) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (____ptrval____) (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2fd/0x1b60 drivers/tty/n_tty.c:2131 2 locks held by getty/5092: #0: (____ptrval____) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (____ptrval____) (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2fd/0x1b60 drivers/tty/n_tty.c:2131 2 locks held by getty/5093: #0: (____ptrval____) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (____ptrval____) (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2fd/0x1b60 drivers/tty/n_tty.c:2131 2 locks held by getty/5094: #0: (____ptrval____) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (____ptrval____) (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2fd/0x1b60 drivers/tty/n_tty.c:2131 2 locks held by getty/5095: #0: (____ptrval____) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (____ptrval____) (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2fd/0x1b60 drivers/tty/n_tty.c:2131 2 locks held by getty/5096: #0: (____ptrval____) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:365 #1: (____ptrval____) (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x2fd/0x1b60 drivers/tty/n_tty.c:2131 1 lock held by syz-executor2/6879: #0: (____ptrval____) (&evdev->mutex){+.+.}, at: evdev_close_device drivers/input/evdev.c:447 [inline] #0: (____ptrval____) (&evdev->mutex){+.+.}, at: evdev_release+0xdd/0x1a0 drivers/input/evdev.c:488 1 lock held by syz-executor4/6886: #0: (____ptrval____) (&evdev->mutex){+.+.}, at: evdev_close_device drivers/input/evdev.c:447 [inline] #0: (____ptrval____) (&evdev->mutex){+.+.}, at: evdev_release+0xdd/0x1a0 drivers/input/evdev.c:488 1 lock held by syz-executor0/6916: #0: (____ptrval____) (&evdev->mutex){+.+.}, at: evdev_ioctl_handler+0x7b/0x140 drivers/input/evdev.c:1299 1 lock held by syz-executor0/6934: #0: (____ptrval____) (&evdev->mutex){+.+.}, at: evdev_ioctl_handler+0x7b/0x140 drivers/input/evdev.c:1299 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 983 Comm: khungtaskd Not tainted 4.18.0-rc1+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x16e/0x22a lib/dump_stack.c:113 nmi_cpu_backtrace.cold.5+0x13/0xb1 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0xf5/0x119 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x6e5/0xbe0 kernel/hung_task.c:252 kthread+0x319/0x3e0 kernel/kthread.c:240 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54