INFO: task hung in filemap

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in filemap_fault (5) mm fs	12	314d	692d	0/26	auto-obsoleted due to no activity on 2023/09/13 22:48
linux-6.1	INFO: task hung in filemap_fault	2	329d	353d	0/3	auto-obsoleted due to no activity on 2023/09/09 11:34
linux-5.15	INFO: task hung in filemap_fault	1	247d	247d	0/3	auto-obsoleted due to no activity on 2023/11/29 22:47
upstream	INFO: task hung in filemap_fault mm	24	2299d	2320d	0/26	closed as invalid on 2018/02/13 19:52
android-44	INFO: task hung in filemap_fault	3	2229d	2231d	0/2	auto-closed as invalid on 2019/02/22 14:09
android-49	INFO: task hung in filemap_fault	4	2122d	2169d	0/3	auto-closed as invalid on 2019/02/22 14:49
upstream	INFO: task hung in filemap_fault (2) mm	5	2012d	2216d	0/26	auto-closed as invalid on 2019/04/20 06:20
upstream	INFO: task hung in filemap_fault (4) mm	1	789d	789d	0/26	auto-closed as invalid on 2022/05/27 12:14

INFO: task syz-executor.1:21641 blocked for more than 143 seconds. Not tainted 5.16.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26880 pid:21641 ppid: 6577 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:4972 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1041 __down_read_common kernel/locking/rwsem.c:1223 [inline] __down_read kernel/locking/rwsem.c:1232 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1472 filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 __do_fault+0x10d/0x4d0 mm/memory.c:3849 do_read_fault mm/memory.c:4164 [inline] do_fault mm/memory.c:4293 [inline] handle_pte_fault mm/memory.c:4551 [inline] __handle_mm_fault+0x28e8/0x5120 mm/memory.c:4686 handle_mm_fault+0x1c8/0x790 mm/memory.c:4784 faultin_page mm/gup.c:939 [inline] __get_user_pages+0x522/0xfb0 mm/gup.c:1160 populate_vma_page_range+0x24d/0x330 mm/gup.c:1492 __mm_populate+0x1ea/0x3e0 mm/gup.c:1601 mm_populate include/linux/mm.h:2734 [inline] vm_mmap_pgoff+0x20e/0x290 mm/util.c:524 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3db5cc1ae9 RSP: 002b:00007f3db4c37188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f3db5dd4f60 RCX: 00007f3db5cc1ae9 RDX: 0000000001000002 RSI: 0000000000b36024 RDI: 0000000020000000 RBP: 00007f3db5d1bff7 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb51dd4bf R14: 00007f3db4c37300 R15: 0000000000022000 </TASK> INFO: task syz-executor.1:21646 blocked for more than 144 seconds. Not tainted 5.16.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28632 pid:21646 ppid: 6577 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:4972 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1041 __down_read_common kernel/locking/rwsem.c:1223 [inline] __down_read kernel/locking/rwsem.c:1232 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1472 filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 __do_fault+0x10d/0x4d0 mm/memory.c:3849 do_read_fault mm/memory.c:4164 [inline] do_fault mm/memory.c:4293 [inline] handle_pte_fault mm/memory.c:4551 [inline] __handle_mm_fault+0x28e8/0x5120 mm/memory.c:4686 handle_mm_fault+0x1c8/0x790 mm/memory.c:4784 faultin_page mm/gup.c:939 [inline] __get_user_pages+0x522/0xfb0 mm/gup.c:1160 populate_vma_page_range+0x24d/0x330 mm/gup.c:1492 __mm_populate+0x1ea/0x3e0 mm/gup.c:1601 mm_populate include/linux/mm.h:2734 [inline] vm_mmap_pgoff+0x20e/0x290 mm/util.c:524 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f3db5cc1ae9 RSP: 002b:00007f3db4c16188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f3db5dd5028 RCX: 00007f3db5cc1ae9 RDX: 0000000001000002 RSI: 0000000000b36024 RDI: 0000000020000000 RBP: 00007f3db5d1bff7 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb51dd4bf R14: 00007f3db4c16300 R15: 0000000000022000 </TASK> INFO: task syz-executor.0:21645 blocked for more than 144 seconds. Not tainted 5.16.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26880 pid:21645 ppid: 6576 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:4972 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1041 __down_read_common kernel/locking/rwsem.c:1223 [inline] __down_read kernel/locking/rwsem.c:1232 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1472 filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 __do_fault+0x10d/0x4d0 mm/memory.c:3849 do_read_fault mm/memory.c:4164 [inline] do_fault mm/memory.c:4293 [inline] handle_pte_fault mm/memory.c:4551 [inline] __handle_mm_fault+0x28e8/0x5120 mm/memory.c:4686 handle_mm_fault+0x1c8/0x790 mm/memory.c:4784 faultin_page mm/gup.c:939 [inline] __get_user_pages+0x522/0xfb0 mm/gup.c:1160 populate_vma_page_range+0x24d/0x330 mm/gup.c:1492 __mm_populate+0x1ea/0x3e0 mm/gup.c:1601 mm_populate include/linux/mm.h:2734 [inline] vm_mmap_pgoff+0x20e/0x290 mm/util.c:524 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fbfd44c3ae9 RSP: 002b:00007fbfd3439188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fbfd45d6f60 RCX: 00007fbfd44c3ae9 RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007fbfd451dff7 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc5bae56ff R14: 00007fbfd3439300 R15: 0000000000022000 </TASK> INFO: task syz-executor.0:21652 blocked for more than 145 seconds. Not tainted 5.16.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29712 pid:21652 ppid: 6576 flags:0x00000004 Call Trace: <TASK> context_switch kernel/sched/core.c:4972 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 rwsem_down_write_slowpath+0x634/0x1110 kernel/locking/rwsem.c:1151 __down_write_common kernel/locking/rwsem.c:1268 [inline] __down_write_common kernel/locking/rwsem.c:1265 [inline] __down_write kernel/locking/rwsem.c:1277 [inline] down_write+0x135/0x150 kernel/locking/rwsem.c:1524 filemap_invalidate_lock include/linux/fs.h:828 [inline] blkdev_fallocate+0x1e2/0x420 block/fops.c:625 vfs_fallocate+0x48d/0xe10 fs/open.c:307 madvise_remove mm/madvise.c:925 [inline] madvise_vma mm/madvise.c:987 [inline] do_madvise.part.0+0xb60/0x2250 mm/madvise.c:1202 do_madvise mm/madvise.c:1228 [inline] __do_sys_madvise mm/madvise.c:1228 [inline] __se_sys_madvise mm/madvise.c:1226 [inline] __x64_sys_madvise+0x113/0x150 mm/madvise.c:1226 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fbfd44c3ae9 RSP: 002b:00007fbfd3418188 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00007fbfd45d7028 RCX: 00007fbfd44c3ae9 RDX: 0000000000000009 RSI: 0000000000600003 RDI: 0000000020000000 RBP: 00007fbfd451dff7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc5bae56ff R14: 00007fbfd3418300 R15: 0000000000022000 </TASK> INFO: task syz-executor.3:21647 blocked for more than 145 seconds. Not tainted 5.16.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:26880 pid:21647 ppid: 6575 flags:0x00004004 Call Trace: <TASK> context_switch kernel/sched/core.c:4972 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1041 __down_read_common kernel/locking/rwsem.c:1223 [inline] __down_read kernel/locking/rwsem.c:1232 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1472 filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 __do_fault+0x10d/0x4d0 mm/memory.c:3849 do_read_fault mm/memory.c:4164 [inline] do_fault mm/memory.c:4293 [inline] handle_pte_fault mm/memory.c:4551 [inline] __handle_mm_fault+0x28e8/0x5120 mm/memory.c:4686 handle_mm_fault+0x1c8/0x790 mm/memory.c:4784 faultin_page mm/gup.c:939 [inline] __get_user_pages+0x522/0xfb0 mm/gup.c:1160 populate_vma_page_range+0x24d/0x330 mm/gup.c:1492 __mm_populate+0x1ea/0x3e0 mm/gup.c:1601 mm_populate include/linux/mm.h:2734 [inline] vm_mmap_pgoff+0x20e/0x290 mm/util.c:524 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f8c4a4a8ae9 RSP: 002b:00007f8c4941e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f8c4a5bbf60 RCX: 00007f8c4a4a8ae9 RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f8c4a502ff7 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc3860f2cf R14: 00007f8c4941e300 R15: 0000000000022000 </TASK> INFO: task syz-executor.5:21660 blocked for more than 146 seconds. Not tainted 5.16.0-rc4-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26056 pid:21660 ppid: 6574 flags:0x00000006 Call Trace: <TASK> context_switch kernel/sched/core.c:4972 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6253 schedule+0xd2/0x260 kernel/sched/core.c:6326 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1041 __down_read_common kernel/locking/rwsem.c:1223 [inline] __down_read kernel/locking/rwsem.c:1232 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1472 filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194 do_page_cache_ra+0xf9/0x140 mm/readahead.c:268 do_sync_mmap_readahead mm/filemap.c:2996 [inline] filemap_fault+0x1562/0x26d0 mm/filemap.c:3089 __do_fault+0x10d/0x4d0 mm/memory.c:3849 do_read_fault mm/memory.c:4164 [inline] do_fault mm/memory.c:4293 [inline] handle_pte_fault mm/memory.c:4551 [inline] __handle_mm_fault+0x28e8/0x5120 mm/memory.c:4686 handle_mm_fault+0x1c8/0x790 mm/memory.c:4784 faultin_page mm/gup.c:939 [inline] __get_user_pages+0x522/0xfb0 mm/gup.c:1160 populate_vma_page_range+0x24d/0x330 mm/gup.c:1492 __mm_populate+0x1ea/0x3e0 mm/gup.c:1601 mm_populate include/linux/mm.h:2734 [inline] vm_mmap_pgoff+0x20e/0x290 mm/util.c:524 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f1d4617eae9 RSP: 002b:00007f1d450d3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f1d46292028 RCX: 00007f1d4617eae9 RDX: 0000000001000002 RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f1d461d8ff7 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000028011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc6087664f R14: 00007f1d450d3300 R15: 0000000000022000 </TASK> Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb811a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458 3 locks held by kworker/u4:2/44: #0: ffff8880b9d39b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478 #1: ffffc90001157db0 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273 #2: ffff8880b9d28298 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:946 1 lock held by kswapd0/98: 1 lock held by in:imklog/6292: #0: ffff8880246fa1b0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:994 2 locks held by syz-executor.1/21641: #0: ffff888078911228 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888078911228 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 2 locks held by syz-executor.1/21646: #0: ffff888078911228 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888078911228 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 1 lock held by syz-executor.4/21639: 1 lock held by syz-executor.4/21654: 2 locks held by syz-executor.0/21645: #0: ffff888018f53268 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888018f53268 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 1 lock held by syz-executor.0/21652: #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:828 [inline] #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e2/0x420 block/fops.c:625 2 locks held by syz-executor.3/21647: #0: ffff88807b2b58e8 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88807b2b58e8 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] #1: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0xc7e/0x26d0 mm/filemap.c:3081 1 lock held by syz-executor.5/21660: #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194 1 lock held by syz-executor.2/21665: #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194 1 lock held by syz-executor.2/21666: #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline] #0: ffff8880171daa08 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6292 Comm: in:imklog Not tainted 5.16.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_switch+0x59/0xf0 kernel/kcov.c:323 Code: 85 83 00 00 00 bb 03 00 00 00 4d 8b 10 31 c9 65 4c 8b 24 25 40 70 02 00 4d 85 d2 74 6b 4c 89 e6 bf 03 00 00 00 4c 8b 4c 24 20 <49> 8b 6c c8 10 e8 2d ff ff ff 84 c0 74 47 49 8b 84 24 88 15 00 00 RSP: 0018:ffffc9000c2df6a0 EFLAGS: 00000206 RAX: 0000000000000008 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffff88801abd81c0 RDI: 0000000000000003 RBP: ffffc9000c2df7e0 R08: ffffffff8a0834a0 R09: ffffffff84000a2a R10: 0000000000000005 R11: 0000000000000075 R12: ffff88801abd81c0 R13: ffffffff89acb3c2 R14: 1ffff9200185bedc R15: 0000000000000075 FS: 00007fa44d0f9700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f031cca7000 CR3: 000000006e544000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> format_decode+0x20a/0xad0 lib/vsprintf.c:2556 vsnprintf+0x157/0x14f0 lib/vsprintf.c:2757 snprintf+0xbb/0xf0 lib/vsprintf.c:2938 print_caller kernel/printk/printk.c:1270 [inline] info_print_prefix+0x11c/0x340 kernel/printk/printk.c:1289 record_print_text+0x14d/0x3e0 kernel/printk/printk.c:1336 syslog_print+0x48a/0x580 kernel/printk/printk.c:1536 do_syslog.part.0+0x202/0x640 kernel/printk/printk.c:1655 do_syslog+0x49/0x60 kernel/printk/printk.c:1640 kmsg_read+0x90/0xb0 fs/proc/kmsg.c:40 pde_read fs/proc/inode.c:311 [inline] proc_reg_read+0x119/0x300 fs/proc/inode.c:321 vfs_read+0x1b5/0x600 fs/read_write.c:479 ksys_read+0x12d/0x250 fs/read_write.c:619 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fa44f73c22d Code: c1 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 97 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fa44d0d8580 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa44f73c22d RDX: 0000000000001fa0 RSI: 00007fa44d0d8da0 RDI: 0000000000000004 RBP: 000055fd5d77f9d0 R08: 0000000000000000 R09: 0000000000000000 R10: 2ce33e6c02ce33e7 R11: 0000000000000293 R12: 00007fa44d0d8da0 R13: 0000000000001fa0 R14: 0000000000001f9f R15: 00007fa44d0d8e1e </TASK> ---------------- Code disassembly (best guess): 0: 85 83 00 00 00 bb test %eax,-0x45000000(%rbx) 6: 03 00 add (%rax),%eax 8: 00 00 add %al,(%rax) a: 4d 8b 10 mov (%r8),%r10 d: 31 c9 xor %ecx,%ecx f: 65 4c 8b 24 25 40 70 mov %gs:0x27040,%r12 16: 02 00 18: 4d 85 d2 test %r10,%r10 1b: 74 6b je 0x88 1d: 4c 89 e6 mov %r12,%rsi 20: bf 03 00 00 00 mov $0x3,%edi 25: 4c 8b 4c 24 20 mov 0x20(%rsp),%r9 * 2a: 49 8b 6c c8 10 mov 0x10(%r8,%rcx,8),%rbp <-- trapping instruction 2f: e8 2d ff ff ff callq 0xffffff61 34: 84 c0 test %al,%al 36: 74 47 je 0x7f 38: 49 8b 84 24 88 15 00 mov 0x1588(%r12),%rax 3f: 00