syzbot


INFO: task hung in copy_process (2)

Status: auto-closed as invalid on 2020/03/02 19:22
Reported-by: syzbot+358f54d729a6fa6a0d54@syzkaller.appspotmail.com
First crash: 1686d, last: 1686d
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in copy_process 1 1507d 1507d 0/1 auto-closed as invalid on 2020/08/29 04:01
upstream INFO: task hung in copy_process (2) kernel 1 1873d 1873d 0/27 closed as invalid on 2019/05/08 13:05
upstream INFO: task hung in copy_process kernel 2 1963d 2108d 0/27 closed as dup on 2018/09/08 14:03
linux-4.19 INFO: task hung in copy_process (2) 1 928d 928d 0/1 auto-closed as invalid on 2022/03/30 21:31
linux-4.19 INFO: task hung in copy_process (3) 1 519d 519d 0/1 upstream: reported on 2023/01/14 12:40
android-49 INFO: task hung in copy_process 1 1901d 1894d 0/3 auto-closed as invalid on 2019/09/30 05:31
android-414 INFO: task hung in copy_process 2 1816d 1894d 0/1 auto-closed as invalid on 2019/10/25 13:42
linux-4.14 INFO: task hung in copy_process 4 1870d 1874d 0/1 auto-closed as invalid on 2019/10/25 08:48

Sample crash report:
INFO: task syz-executor.4:3101 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4  D25312  3101   3100 0x00000000
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline]
 rwsem_down_write_failed+0x3ee/0x7c0 kernel/locking/rwsem-xadd.c:617
 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105
 __down_write arch/x86/include/asm/rwsem.h:126 [inline]
 down_write+0x4f/0x90 kernel/locking/rwsem.c:56
 i_mmap_lock_write include/linux/fs.h:475 [inline]
 dup_mmap kernel/fork.c:686 [inline]
 dup_mm kernel/fork.c:1213 [inline]
 copy_mm kernel/fork.c:1268 [inline]
 copy_process.part.0+0x246a/0x66c0 kernel/fork.c:1895
 copy_process kernel/fork.c:1679 [inline]
 _do_fork+0x197/0xce0 kernel/fork.c:2220
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45851a
RSP: 002b:00007ffce991f710 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffce991f710 RCX: 000000000045851a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffce991f750 R08: 0000000000000001 R09: 000000000262c940
R10: 000000000262cc10 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffce991f7a0
INFO: task syz-executor.3:22114 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D27792 22114   1859 0x80000002
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline]
 rwsem_down_write_failed+0x3ee/0x7c0 kernel/locking/rwsem-xadd.c:617
 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105
 __down_write arch/x86/include/asm/rwsem.h:126 [inline]
 down_write+0x4f/0x90 kernel/locking/rwsem.c:56
 i_mmap_lock_write include/linux/fs.h:475 [inline]
 unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
 free_pgtables+0xb3/0x1c0 mm/memory.c:644
 exit_mmap+0x222/0x440 mm/mmap.c:3078
 __mmput kernel/fork.c:940 [inline]
 mmput+0xeb/0x370 kernel/fork.c:961
 exit_mm kernel/exit.c:545 [inline]
 do_exit+0x905/0x2a20 kernel/exit.c:862
 do_group_exit+0x100/0x2e0 kernel/exit.c:978
 get_signal+0x39f/0x1cc0 kernel/signal.c:2422
 do_signal+0x96/0x15d0 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x11d/0x160 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x3a3/0x520 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459f49
RSP: 002b:00007f9a4faabc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 0000000000000001 RBX: 0000000000000004 RCX: 0000000000459f49
RDX: 0000000000000002 RSI: 000000002000c600 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a4faac6d4
R13: 00000000004c7ca9 R14: 00000000004de0c8 R15: 00000000ffffffff
INFO: task syz-executor.3:22130 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D27840 22130   1859 0x80000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline]
 rwsem_down_write_failed+0x3ee/0x7c0 kernel/locking/rwsem-xadd.c:617
 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105
 __down_write arch/x86/include/asm/rwsem.h:126 [inline]
 down_write+0x4f/0x90 kernel/locking/rwsem.c:56
 i_mmap_lock_write include/linux/fs.h:475 [inline]
 unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
 free_pgtables+0xb3/0x1c0 mm/memory.c:644
 exit_mmap+0x222/0x440 mm/mmap.c:3078
 __mmput kernel/fork.c:940 [inline]
 mmput+0xeb/0x370 kernel/fork.c:961
 exit_mm kernel/exit.c:545 [inline]
 do_exit+0x905/0x2a20 kernel/exit.c:862
 do_group_exit+0x100/0x2e0 kernel/exit.c:978
 get_signal+0x39f/0x1cc0 kernel/signal.c:2422
 do_signal+0x96/0x15d0 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x11d/0x160 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x3a3/0x520 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459f49
RSP: 002b:00007f9a4faabcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000075bf28 RCX: 0000000000459f49
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c
R13: 00007ffdbb1945ff R14: 00007f9a4faac9c0 R15: 000000000075bf2c
INFO: task syz-executor.3:22147 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D28912 22147   1859 0x80000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline]
 rwsem_down_write_failed+0x3ee/0x7c0 kernel/locking/rwsem-xadd.c:617
 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105
 __down_write arch/x86/include/asm/rwsem.h:126 [inline]
 down_write+0x4f/0x90 kernel/locking/rwsem.c:56
 i_mmap_lock_write include/linux/fs.h:475 [inline]
 unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
 free_pgtables+0xb3/0x1c0 mm/memory.c:644
 exit_mmap+0x222/0x440 mm/mmap.c:3078
 __mmput kernel/fork.c:940 [inline]
 mmput+0xeb/0x370 kernel/fork.c:961
 exit_mm kernel/exit.c:545 [inline]
 do_exit+0x905/0x2a20 kernel/exit.c:862
 do_group_exit+0x100/0x2e0 kernel/exit.c:978
 get_signal+0x39f/0x1cc0 kernel/signal.c:2422
 do_signal+0x96/0x15d0 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x11d/0x160 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x3a3/0x520 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459f49
RSP: 002b:00007f9a4fa8acf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000075bfd0 RCX: 0000000000459f49
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bfd0
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bfd4
R13: 00007ffdbb1945ff R14: 00007f9a4fa8b9c0 R15: 000000000075bfd4
INFO: task syz-executor.2:22165 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D27760 22165   4822 0x80000000
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline]
 rwsem_down_write_failed+0x3ee/0x7c0 kernel/locking/rwsem-xadd.c:617
 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105
 __down_write arch/x86/include/asm/rwsem.h:126 [inline]
 down_write+0x4f/0x90 kernel/locking/rwsem.c:56
 i_mmap_lock_write include/linux/fs.h:475 [inline]
 unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
 free_pgtables+0xb3/0x1c0 mm/memory.c:644
 exit_mmap+0x222/0x440 mm/mmap.c:3078
 __mmput kernel/fork.c:940 [inline]
 mmput+0xeb/0x370 kernel/fork.c:961
 exit_mm kernel/exit.c:545 [inline]
 do_exit+0x905/0x2a20 kernel/exit.c:862
 do_group_exit+0x100/0x2e0 kernel/exit.c:978
 SYSC_exit_group kernel/exit.c:989 [inline]
 SyS_exit_group+0x19/0x20 kernel/exit.c:987
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459f49
RSP: 002b:00007f7941ae8408 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000000459f49
RDX: 0000000000413c01 RSI: 00007f7941ae8440 RDI: 000000000000000b
RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000b R11: 0000000000000246 R12: 00007f7941ae8a40
R13: 00000000004d1bb8 R14: 00000000004e1260 R15: 00000000ffffffff

Showing all locks held in the system:
1 lock held by khungtaskd/23:
 #0:  (tasklist_lock){.+.+}, at: [<00000000af53f495>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544
2 locks held by getty/1766:
 #0:  (&tty->ldisc_sem){++++}, at: [<000000007b98f398>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<0000000027fc6f20>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156
1 lock held by syz-executor.3/1846:
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
1 lock held by syz-executor.4/3100:
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
4 locks held by syz-executor.4/3101:
 #0:  (&dup_mmap_sem){.+.+}, at: [<00000000902f30b9>] dup_mmap kernel/fork.c:611 [inline]
 #0:  (&dup_mmap_sem){.+.+}, at: [<00000000902f30b9>] dup_mm kernel/fork.c:1213 [inline]
 #0:  (&dup_mmap_sem){.+.+}, at: [<00000000902f30b9>] copy_mm kernel/fork.c:1268 [inline]
 #0:  (&dup_mmap_sem){.+.+}, at: [<00000000902f30b9>] copy_process.part.0+0x1ff5/0x66c0 kernel/fork.c:1895
 #1:  (&mm->mmap_sem){++++}, at: [<000000002e5aad5c>] dup_mmap kernel/fork.c:612 [inline]
 #1:  (&mm->mmap_sem){++++}, at: [<000000002e5aad5c>] dup_mm kernel/fork.c:1213 [inline]
 #1:  (&mm->mmap_sem){++++}, at: [<000000002e5aad5c>] copy_mm kernel/fork.c:1268 [inline]
 #1:  (&mm->mmap_sem){++++}, at: [<000000002e5aad5c>] copy_process.part.0+0x2011/0x66c0 kernel/fork.c:1895
 #2:  (&mm->mmap_sem/1){+.+.}, at: [<000000008045f1cd>] dup_mmap kernel/fork.c:621 [inline]
 #2:  (&mm->mmap_sem/1){+.+.}, at: [<000000008045f1cd>] dup_mm kernel/fork.c:1213 [inline]
 #2:  (&mm->mmap_sem/1){+.+.}, at: [<000000008045f1cd>] copy_mm kernel/fork.c:1268 [inline]
 #2:  (&mm->mmap_sem/1){+.+.}, at: [<000000008045f1cd>] copy_process.part.0+0x204c/0x66c0 kernel/fork.c:1895
 #3:  (&mapping->i_mmap_rwsem){++++}, at: [<0000000092fde278>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #3:  (&mapping->i_mmap_rwsem){++++}, at: [<0000000092fde278>] dup_mmap kernel/fork.c:686 [inline]
 #3:  (&mapping->i_mmap_rwsem){++++}, at: [<0000000092fde278>] dup_mm kernel/fork.c:1213 [inline]
 #3:  (&mapping->i_mmap_rwsem){++++}, at: [<0000000092fde278>] copy_mm kernel/fork.c:1268 [inline]
 #3:  (&mapping->i_mmap_rwsem){++++}, at: [<0000000092fde278>] copy_process.part.0+0x246a/0x66c0 kernel/fork.c:1895
1 lock held by syz-executor.1/6372:
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
1 lock held by syz-executor.3/22114:
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
1 lock held by syz-executor.3/22130:
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
1 lock held by syz-executor.3/22147:
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158
1 lock held by syz-executor.2/22165:
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] i_mmap_lock_write include/linux/fs.h:475 [inline]
 #0:  (&mapping->i_mmap_rwsem){++++}, at: [<00000000a53eab88>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.151+ #0
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x119/0x147 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
 watchdog+0x629/0xbe0 kernel/hung_task.c:274
 kthread+0x31f/0x430 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22153 Comm: syz-executor.1 Not tainted 4.14.151+ #0
task: 0000000066c16192 task.stack: 00000000d789bd0a
RIP: 0010:debug_lockdep_rcu_enabled.part.0+0x33/0x50 kernel/rcu/update.c:300
RSP: 0018:ffff8881dba07b58 EFLAGS: 00000002
RAX: 0000000000000007 RBX: ffff888191f29780 RCX: 1ffffffff0942c80
RDX: 0000000000000000 RSI: 1ffffffff08d5684 RDI: ffff888191f29fac
RBP: ffffffff848e3508 R08: 0000000000000002 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff84c300ab R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
FS:  00007f8c66173700(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002279000 CR3: 000000019e852005 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x197/0x360 kernel/locking/lockdep.c:3993
 seqcount_lockdep_reader_access include/linux/seqlock.h:81 [inline]
 read_seqcount_begin include/linux/seqlock.h:164 [inline]
 ktime_get kernel/time/timekeeping.c:760 [inline]
 ktime_get+0x68/0x1b0 kernel/time/timekeeping.c:750
 hrtimer_forward_now include/linux/hrtimer.h:452 [inline]
 perf_swevent_hrtimer+0x2d6/0x390 kernel/events/core.c:8735
 __run_hrtimer kernel/time/hrtimer.c:1259 [inline]
 __hrtimer_run_queues+0x28b/0xc40 kernel/time/hrtimer.c:1323
 hrtimer_interrupt+0x1bd/0x490 kernel/time/hrtimer.c:1357
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x147/0x650 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:__tlb_adjust_range include/asm-generic/tlb.h:128 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1328 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1444 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1473 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1494 [inline]
RIP: 0010:unmap_page_range+0x86a/0x1320 mm/memory.c:1515
RSP: 0018:ffff888174faf940 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 1ffff1102e9f5f6a RBX: 0000000000000000 RCX: ffff888174fafb38
RDX: ffffffff814d7f2a RSI: ffffc90008f86000 RDI: ffff888174fafb50
RBP: 00007eff1ea24000 R08: 0000000000000001 R09: ffffed1031dc7825
R10: ffffed1031dc7824 R11: ffff88818ee3c127 R12: 00007eff1ea25000
R13: ffffea000726a9c0 R14: dffffc0000000000 R15: ffff88818ee3c120
 unmap_single_vma+0x118/0x170 mm/memory.c:1560
 zap_page_range_single+0x206/0x2a0 mm/memory.c:1651
 unmap_mapping_range_vma mm/memory.c:2791 [inline]
 unmap_mapping_range_tree mm/memory.c:2812 [inline]
 unmap_mapping_range+0x212/0x290 mm/memory.c:2859
 truncate_pagecache+0x51/0x90 mm/truncate.c:760
 simple_setattr+0xc6/0xf0 fs/libfs.c:413
 notify_change2+0xbea/0xd80 fs/attr.c:317
 do_truncate2+0x11e/0x1e0 fs/open.c:63
 do_sys_ftruncate.constprop.0+0x34f/0x4a0 fs/open.c:214
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459f49
RSP: 002b:00007f8c66172c78 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459f49
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000000
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8c661736d4
R13: 00000000004c0b83 R14: 00000000004d3928 R15: 00000000ffffffff
Code: ff df 53 65 48 8b 1c 25 c0 de 01 00 48 8d bb 2c 08 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 <84> d2 75 0f 8b 93 2c 08 00 00 31 c0 5b 85 d2 0f 94 c0 c3 e8 95 

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/11/03 19:21 android-4.14 6409e7e01d11 c9610487 .config console log report ci-android-414-kasan-gce-root
* Struck through repros no longer work on HEAD.