On Thu 2024-09-26 00:53:21, Steven Rostedt wrote: > On Sat, 21 Sep 2024 23:39:17 -0700 > syzbot <syzbot+83a876aef81c9a485ae8@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: a940d9a43e62 Merge tag 'soc-arm-6.12' of git://git.kernel... > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=12d1c69f980000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=44d46e514184cd24 > > dashboard link: https://syzkaller.appspot.com/bug?extid=83a876aef81c9a485ae8 > > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11597677980000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13cd7500580000 > > > > Downloadable assets: > > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-a940d9a4.raw.xz > > vmlinux: https://storage.googleapis.com/syzbot-assets/e9929bfe422c/vmlinux-a940d9a4.xz > > kernel image: https://storage.googleapis.com/syzbot-assets/a6c74ee261ed/bzImage-a940d9a4.xz > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+83a876aef81c9a485ae8@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > FAULT_INJECTION: forcing a failure. > > name fail_usercopy, interval 1, probability 0, space 0, times 1 > > ====================================================== > > WARNING: possible circular locking dependency detected > > 6.11.0-syzkaller-03917-ga940d9a43e62 #0 Not tainted > > ------------------------------------------------------ > > syz-executor291/5332 is trying to acquire lock: > > ffffffff8dda88d8 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0x12/0x70 kernel/locking/semaphore.c:139 > > I'm assuming that lockdep splats like this will no longer be an issue come 6.12? I am afraid that it still would happen in 6.12. :-( The legacy loop (console_trylock()/unlock()) will still be called there when there is a boot or a legacy console registered. I actually guess that all console will be legacy in 6.12 because the conversion of the uart 8250 console driver still need some love, see the last version at https://lore.kernel.org/r/20240913140538.221708-1-john.ogness@xxxxxxxxxxxxx The only exception will be CONFIG_RT mode which would offload even the legacy loop to a dedicated kthread. Best Regards, Petr > > > > but task is already holding lock: > > ffff88806a92a858 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x6c1/0xdc0 kernel/time/timer.c:1164 > > > > which lock already depends on the new lock. > > > > > > the existing dependency chain (in reverse order) is: > > > > -> #3 (&base->lock){-.-.}-{2:2}: > > __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] > > _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 > > lock_timer_base+0x5d/0x220 kernel/time/timer.c:1051 > > __mod_timer+0x426/0xdc0 kernel/time/timer.c:1132 > > add_timer_global+0x8a/0xc0 kernel/time/timer.c:1330 > > __queue_delayed_work+0x1ba/0x2e0 kernel/workqueue.c:2525 > > queue_delayed_work_on+0x12a/0x150 kernel/workqueue.c:2554 > > psi_task_change+0x1b4/0x2e0 kernel/sched/psi.c:913 > > psi_enqueue kernel/sched/stats.h:143 [inline] > > enqueue_task+0x1a5/0x350 kernel/sched/core.c:1975 > > activate_task kernel/sched/core.c:2009 [inline] > > wake_up_new_task+0x5ba/0xd30 kernel/sched/core.c:4689 > > kernel_clone+0x236/0x960 kernel/fork.c:2812 > > user_mode_thread+0xb4/0xf0 kernel/fork.c:2859 > > rest_init+0x23/0x2b0 init/main.c:712 > > start_kernel+0x3e4/0x4d0 init/main.c:1105 > > x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507 > > x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488 > > common_startup_64+0x13e/0x148 > > > > -> #2 (&rq->__lock){-.-.}-{2:2}: > > _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 > > raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:560 > > raw_spin_rq_lock kernel/sched/sched.h:1415 [inline] > > rq_lock kernel/sched/sched.h:1714 [inline] > > task_fork_fair+0x73/0x250 kernel/sched/fair.c:12710 > > sched_cgroup_fork+0x3cf/0x510 kernel/sched/core.c:4633 > > copy_process+0x439b/0x8dd0 kernel/fork.c:2483 > > kernel_clone+0xfd/0x960 kernel/fork.c:2781 > > user_mode_thread+0xb4/0xf0 kernel/fork.c:2859 > > rest_init+0x23/0x2b0 init/main.c:712 > > start_kernel+0x3e4/0x4d0 init/main.c:1105 > > x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507 > > x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488 > > common_startup_64+0x13e/0x148 > > > > -> #1 (&p->pi_lock){-.-.}-{2:2}: > > __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] > > _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 > > class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline] > > try_to_wake_up+0x9a/0x13e0 kernel/sched/core.c:4051 > > up+0x79/0xb0 kernel/locking/semaphore.c:191 > > __up_console_sem+0x85/0xe0 kernel/printk/printk.c:343 > > __console_unlock kernel/printk/printk.c:2844 [inline] > > __console_flush_and_unlock kernel/printk/printk.c:3241 [inline] > > console_unlock+0x1dc/0x210 kernel/printk/printk.c:3279 > > vga_remove_vgacon drivers/pci/vgaarb.c:186 [inline] > > vga_remove_vgacon+0x90/0xd0 drivers/pci/vgaarb.c:167 > > __aperture_remove_legacy_vga_devices drivers/video/aperture.c:331 [inline] > > aperture_remove_conflicting_pci_devices+0x16a/0x1e0 drivers/video/aperture.c:369 > > virtio_gpu_pci_quirk drivers/gpu/drm/virtio/virtgpu_drv.c:61 [inline] > > virtio_gpu_probe+0x408/0x4e0 drivers/gpu/drm/virtio/virtgpu_drv.c:92 > > virtio_dev_probe+0x586/0x8a0 drivers/virtio/virtio.c:341 > > call_driver_probe drivers/base/dd.c:578 [inline] > > really_probe+0x23e/0xa90 drivers/base/dd.c:657 > > __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 > > driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 > > __driver_attach+0x283/0x580 drivers/base/dd.c:1215 > > bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368 > > bus_add_driver+0x2e9/0x690 drivers/base/bus.c:673 > > driver_register+0x15c/0x4b0 drivers/base/driver.c:246 > > do_one_initcall+0x128/0x700 init/main.c:1269 > > do_initcall_level init/main.c:1331 [inline] > > do_initcalls init/main.c:1347 [inline] > > do_basic_setup init/main.c:1366 [inline] > > kernel_init_freeable+0x69d/0xca0 init/main.c:1580 > > kernel_init+0x1c/0x2b0 init/main.c:1469 > > ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 > > ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 > > > > -> #0 ((console_sem).lock){-...}-{2:2}: > > check_prev_add kernel/locking/lockdep.c:3158 [inline] > > check_prevs_add kernel/locking/lockdep.c:3277 [inline] > > validate_chain kernel/locking/lockdep.c:3901 [inline] > > __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5199 > > lock_acquire kernel/locking/lockdep.c:5822 [inline] > > lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5787 > > __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] > > _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 > > down_trylock+0x12/0x70 kernel/locking/semaphore.c:139 > > __down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:326 > > console_trylock kernel/printk/printk.c:2827 [inline] > > console_trylock_spinning kernel/printk/printk.c:1990 [inline] > > vprintk_emit+0x3ec/0x6f0 kernel/printk/printk.c:2406 > > vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68 > > _printk+0xc8/0x100 kernel/printk/printk.c:2432 > > fail_dump lib/fault-inject.c:45 [inline] > > should_fail_ex+0x46c/0x5b0 lib/fault-inject.c:153 > > strncpy_from_user+0x38/0x320 lib/strncpy_from_user.c:118 > > strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:186 > > bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline] > > ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:311 [inline] > > bpf_probe_read_compat_str+0xf1/0x170 kernel/trace/bpf_trace.c:307 > > bpf_prog_d0e9ac47b081aec3+0x48/0x4a > > bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline] > > __bpf_prog_run include/linux/filter.h:691 [inline] > > bpf_prog_run include/linux/filter.h:698 [inline] > > __bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline] > > bpf_trace_run2+0x231/0x590 kernel/trace/bpf_trace.c:2447 > > __bpf_trace_timer_start+0xc7/0x100 include/trace/events/timer.h:52 > > trace_timer_start include/trace/events/timer.h:52 [inline] > > enqueue_timer+0x2b4/0x550 kernel/time/timer.c:663 > > internal_add_timer kernel/time/timer.c:688 [inline] > > __mod_timer+0x8d7/0xdc0 kernel/time/timer.c:1183 > > add_timer_global+0x8a/0xc0 kernel/time/timer.c:1330 > > __queue_delayed_work+0x1ba/0x2e0 kernel/workqueue.c:2525 > > queue_delayed_work_on+0x12a/0x150 kernel/workqueue.c:2554 > > queue_delayed_work include/linux/workqueue.h:636 [inline] > > fbcon_add_cursor_work drivers/video/fbdev/core/fbcon.c:392 [inline] > > fbcon_cursor+0x4a0/0x520 drivers/video/fbdev/core/fbcon.c:1316 > > hide_cursor+0x84/0x220 drivers/tty/vt/vt.c:846 > > do_con_write+0x21e6/0x7bb0 drivers/tty/vt/vt.c:3068 > > con_write+0x23/0xb0 drivers/tty/vt/vt.c:3434 > > process_output_block drivers/tty/n_tty.c:574 [inline] > > n_tty_write+0x419/0x1140 drivers/tty/n_tty.c:2389 > > iterate_tty_write drivers/tty/tty_io.c:1021 [inline] > > file_tty_write.constprop.0+0x506/0x9a0 drivers/tty/tty_io.c:1096 > > new_sync_write fs/read_write.c:590 [inline] > > vfs_write+0x6b5/0x1140 fs/read_write.c:683 > > ksys_write+0x12f/0x260 fs/read_write.c:736 > > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > > do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 > > entry_SYSCALL_64_after_hwframe+0x77/0x7f > > > > other info that might help us debug this: > > > > Chain exists of: > > (console_sem).lock --> &rq->__lock --> &base->lock > > > > Possible unsafe locking scenario: > > > > CPU0 CPU1 > > ---- ---- > > lock(&base->lock); > > lock(&rq->__lock); > > lock(&base->lock); > > lock((console_sem).lock); > > > > *** DEADLOCK *** > > > > 7 locks held by syz-executor291/5332: > > #0: ffff8880353610a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 > > #1: ffff888035361130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: tty_write_lock drivers/tty/tty_io.c:954 [inline] > > #1: ffff888035361130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: iterate_tty_write drivers/tty/tty_io.c:973 [inline] > > #1: ffff888035361130 (&tty->atomic_write_lock){+.+.}-{3:3}, at: file_tty_write.constprop.0+0x281/0x9a0 drivers/tty/tty_io.c:1096 > > #2: ffff8880353612e8 (&tty->termios_rwsem){++++}-{3:3}, at: n_tty_write+0x1bd/0x1140 drivers/tty/n_tty.c:2372 > > #3: ffffc9000324e380 (&ldata->output_lock){+.+.}-{3:3}, at: process_output_block drivers/tty/n_tty.c:529 [inline] > > #3: ffffc9000324e380 (&ldata->output_lock){+.+.}-{3:3}, at: n_tty_write+0x533/0x1140 drivers/tty/n_tty.c:2389 > > #4: ffffffff8dda8460 (console_lock){+.+.}-{0:0}, at: do_con_write+0x154/0x7bb0 drivers/tty/vt/vt.c:3056 > > #5: ffff88806a92a858 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x6c1/0xdc0 kernel/time/timer.c:1164 > > #6: ffffffff8ddbaea0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] > > #6: ffffffff8ddbaea0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] > > #6: ffffffff8ddbaea0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2405 [inline] > > #6: ffffffff8ddbaea0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1c2/0x590 kernel/trace/bpf_trace.c:2447 > > > > stack backtrace: > > CPU: 3 UID: 0 PID: 5332 Comm: syz-executor291 Not tainted 6.11.0-syzkaller-03917-ga940d9a43e62 #0 > > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > > Call Trace: > > <TASK> > > __dump_stack lib/dump_stack.c:93 [inline] > > dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119 > > print_circular_bug+0x419/0x5d0 kernel/locking/lockdep.c:2074 > > check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2203 > > check_prev_add kernel/locking/lockdep.c:3158 [inline] > > check_prevs_add kernel/locking/lockdep.c:3277 [inline] > > validate_chain kernel/locking/lockdep.c:3901 [inline] > > __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5199 > > lock_acquire kernel/locking/lockdep.c:5822 [inline] > > lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5787 > > __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] > > _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 > > down_trylock+0x12/0x70 kernel/locking/semaphore.c:139 > > __down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:326 > > console_trylock kernel/printk/printk.c:2827 [inline] > > console_trylock_spinning kernel/printk/printk.c:1990 [inline] > > vprintk_emit+0x3ec/0x6f0 kernel/printk/printk.c:2406 > > vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68 > > _printk+0xc8/0x100 kernel/printk/printk.c:2432 > > fail_dump lib/fault-inject.c:45 [inline] > > should_fail_ex+0x46c/0x5b0 lib/fault-inject.c:153 > > strncpy_from_user+0x38/0x320 lib/strncpy_from_user.c:118 > > strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:186 > > bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline] > > ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:311 [inline] > > bpf_probe_read_compat_str+0xf1/0x170 kernel/trace/bpf_trace.c:307 > > bpf_prog_d0e9ac47b081aec3+0x48/0x4a > > bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline] > > __bpf_prog_run include/linux/filter.h:691 [inline] > > bpf_prog_run include/linux/filter.h:698 [inline] > > __bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline] > > bpf_trace_run2+0x231/0x590 kernel/trace/bpf_trace.c:2447 > > __bpf_trace_timer_start+0xc7/0x100 include/trace/events/timer.h:52 > > trace_timer_start include/trace/events/timer.h:52 [inline] > > enqueue_timer+0x2b4/0x550 kernel/time/timer.c:663 > > internal_add_timer kernel/time/timer.c:688 [inline] > > __mod_timer+0x8d7/0xdc0 kernel/time/timer.c:1183 > > add_timer_global+0x8a/0xc0 kernel/time/timer.c:1330 > > __queue_delayed_work+0x1ba/0x2e0 kernel/workqueue.c:2525 > > queue_delayed_work_on+0x12a/0x150 kernel/workqueue.c:2554 > > queue_delayed_work include/linux/workqueue.h:636 [inline] > > fbcon_add_cursor_work drivers/video/fbdev/core/fbcon.c:392 [inline] > > fbcon_cursor+0x4a0/0x520 drivers/video/fbdev/core/fbcon.c:1316 > > hide_cursor+0x84/0x220 drivers/tty/vt/vt.c:846 > > do_con_write+0x21e6/0x7bb0 drivers/tty/vt/vt.c:3068 > > con_write+0x23/0xb0 drivers/tty/vt/vt.c:3434 > > process_output_block drivers/tty/n_tty.c:574 [inline] > > n_tty_write+0x419/0x1140 drivers/tty/n_tty.c:2389 > > iterate_tty_write drivers/tty/tty_io.c:1021 [inline] > > file_tty_write.constprop.0+0x506/0x9a0 drivers/tty/tty_io.c:1096 > > new_sync_write fs/read_write.c:590 [inline] > > vfs_write+0x6b5/0x1140 fs/read_write.c:683 > > ksys_write+0x12f/0x260 fs/read_write.c:736 > > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > > do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 > > entry_SYSCALL_64_after_hwframe+0x77/0x7f > > RIP: 0033:0x7f36b5809869 > > Code: 48 83 c4 28 c3 e8 17 1a 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 > > RSP: 002b:00007ffeb8b42888 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 > > RAX: ffffffffffffffda RBX: 00007ffeb8b42890 RCX: 00007f36b5809869 > > RDX: 0000000000001006 RSI: 0000000020001040 RDI: 0000000000000006 > > RBP: 0000000000000001 R08: 00007ffeb8b42627 R09: 00007f36b5870033 > > R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 > > R13: 00007ffeb8b42a68 R14: 0000000000000001 R15: 0000000000000001 > > </TASK> > > CPU: 3 UID: 0 PID: 5332 Comm: syz-executor291 Not tainted 6.11.0-syzkaller-03917-ga940d9a43e62 #0 > > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > > Call Trace: > > <TASK> > > __dump_stack lib/dump_stack.c:93 [inline] > > dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119 > > fail_dump lib/fault-inject.c:52 [inline] > > should_fail_ex+0x497/0x5b0 lib/fault-inject.c:153 > > strncpy_from_user+0x38/0x320 lib/strncpy_from_user.c:118 > > strncpy_from_user_nofault+0x7f/0x180 mm/maccess.c:186 > > bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline] > > ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:311 [inline] > > bpf_probe_read_compat_str+0xf1/0x170 kernel/trace/bpf_trace.c:307 > > bpf_prog_d0e9ac47b081aec3+0x48/0x4a > > bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline] > > __bpf_prog_run include/linux/filter.h:691 [inline] > > bpf_prog_run include/linux/filter.h:698 [inline] > > __bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline] > > bpf_trace_run2+0x231/0x590 kernel/trace/bpf_trace.c:2447 > > __bpf_trace_timer_start+0xc7/0x100 include/trace/events/timer.h:52 > > trace_timer_start include/trace/events/timer.h:52 [inline] > > enqueue_timer+0x2b4/0x550 kernel/time/timer.c:663 > > internal_add_timer kernel/time/timer.c:688 [inline] > > __mod_timer+0x8d7/0xdc0 kernel/time/timer.c:1183 > > add_timer_global+0x8a/0xc0 kernel/time/timer.c:1330 > > __queue_delayed_work+0x1ba/0x2e0 kernel/workqueue.c:2525 > > queue_delayed_work_on+0x12a/0x150 kernel/workqueue.c:2554 > > queue_delayed_work include/linux/workqueue.h:636 [inline] > > fbcon_add_cursor_work drivers/video/fbdev/core/fbcon.c:392 [inline] > > fbcon_cursor+0x4a0/0x520 drivers/video/fbdev/core/fbcon.c:1316 > > hide_cursor+0x84/0x220 drivers/tty/vt/vt.c:846 > > do_con_write+0x21e6/0x7bb0 drivers/tty/vt/vt.c:3068 > > con_write+0x23/0xb0 drivers/tty/vt/vt.c:3434 > > process_output_block drivers/tty/n_tty.c:574 [inline] > > n_tty_write+0x419/0x1140 drivers/tty/n_tty.c:2389 > > iterate_tty_write drivers/tty/tty_io.c:1021 [inline] > > file_tty_write.constprop.0+0x506/0x9a0 drivers/tty/tty_io.c:1096 > > new_sync_write fs/read_write.c:590 [inline] > > vfs_write+0x6b5/0x1140 fs/read_write.c:683 > > ksys_write+0x12f/0x260 fs/read_write.c:736 > > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > > do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 > > entry_SYSCALL_64_after_hwframe+0x77/0x7f > > RIP: 0033:0x7f36b5809869 > > Code: 48 83 c4 28 c3 e8 17 1a 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 > > RSP: 002b:00007ffeb8b42888 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 > > RAX: ffffffffffffffda RBX: 00007ffeb8b42890 RCX: 00007f36b5809869 > > RDX: 0000000000001006 RSI: 0000000020001040 RDI: 0000000000000006 > > RBP: 0000000000000001 R08: 00007ffeb8b42627 R09: 00007f36b5870033 > > R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 > > R13: 00007ffeb8b42a68 R14: 0000000000000001 R15: 0000000000000001 > > </TASK> > > > > > > --- > > This report is generated by a bot. It may contain errors. > > See https://goo.gl/tpsmEJ for more information about syzbot. > > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > > > syzbot will keep track of this issue. See: > > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > > > If the report is already addressed, let syzbot know by replying with: > > #syz fix: exact-commit-title > > > > If you want syzbot to run the reproducer, reply with: > > #syz test: git://repo/address.git branch-or-commit-hash > > If you attach or paste a git patch, syzbot will apply it before testing. > > > > If you want to overwrite report's subsystems, reply with: > > #syz set subsystems: new-subsystem > > (See the list of subsystem names on the web dashboard) > > > > If the report is a duplicate of another one, reply with: > > #syz dup: exact-subject-of-another-report > > > > If you want to undo deduplication, reply with: > > #syz undup
