==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc900041a7ba0 by task syz-executor279/5057
CPU: 1 PID: 5057 Comm: syz-executor279 Not tainted 6.8.0-rc1-syzkaller-00356-g8a696a29c690 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:488
kasan_report+0xda/0x110 mm/kasan/report.c:601
profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
profile_tick+0xcd/0x130 kernel/profile.c:339
tick_nohz_highres_handler+0xe9/0x110 kernel/time/tick-sched.c:1519
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x647/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:queued_read_lock_slowpath+0x131/0x2ad kernel/locking/qrwlock.c:51
Code: 85 41 01 00 00 8b 03 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 de 48 89 dd 49 c1 ee 03 83 e5 07 49 01 c6 83 c5 03 f3 90 <41> 0f b6 06 40 38 c5 7c 08 84 c0 0f 85 1b 01 00 00 8b 03 84 c0 75
RSP: 0018:ffffc900041a7b98 EFLAGS: 00000286
RAX: 00000000000002ff RBX: ffffffff8ce0a080 RCX: ffffffff8a92249b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8ce0a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff19c1410
R10: ffffffff8ce0a083 R11: 0000000000000000 R12: 1ffff92000834f74
R13: ffffffff8ce0a084 R14: fffffbfff19c1410 R15: ffffffff814fa842
__do_wait+0x105/0x890 kernel/exit.c:1584
do_wait+0x212/0x530 kernel/exit.c:1628
kernel_wait4+0x16d/0x280 kernel/exit.c:1787
__do_sys_wait4+0x15b/0x170 kernel/exit.c:1815
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff079b795b3
Code: fe ff e9 41 ff ff ff 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 80 3d d1 9a 07 00 00 49 89 ca 74 14 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5d c3 0f 1f 40 00 48 83 ec 28 89 54 24 14 48
RSP: 002b:00007ffd2a43f188 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000002e28 RCX: 00007ff079b795b3
RDX: 0000000040000001 RSI: 00007ffd2a43f19c RDI: 00000000ffffffff
RBP: 00000000000f4240 R08: 0000000000000079 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000001d8de
R13: 00007ffd2a43f19c R14: 00007ffd2a43f1b0 R15: 00007ffd2a43f1a0
The buggy address belongs to stack of task syz-executor279/5057
and is located at offset 0 in frame:
queued_read_lock_slowpath+0x0/0x2ad arch/x86/include/asm/paravirt.h:584
This frame has 1 object:
[32, 36) 'val'
The buggy address belongs to the virtual mapping at
[ffffc900041a0000, ffffc900041a9000) created by:
kernel_clone+0xfd/0x930 kernel/fork.c:2902
The buggy address belongs to the physical page:
page:ffffea0001f7f200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7dfc8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5056, tgid 5056 (syz-executor279), ts 65181628404, free_ts 59523984162
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311
__alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567
alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
__vmalloc_area_node mm/vmalloc.c:3139 [inline]
__vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3320
alloc_thread_stack_node kernel/fork.c:307 [inline]
dup_task_struct kernel/fork.c:1112 [inline]
copy_process+0x1507/0x97b0 kernel/fork.c:2327
kernel_clone+0xfd/0x930 kernel/fork.c:2902
__do_sys_clone+0xba/0x100 kernel/fork.c:3045
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free pid 5050 tgid 5050 stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2346
free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486
__folio_put_small mm/swap.c:106 [inline]
__folio_put+0xc3/0x110 mm/swap.c:129
folio_put include/linux/mm.h:1494 [inline]
put_page include/linux/mm.h:1563 [inline]
anon_pipe_buf_release+0x3fa/0x4b0 fs/pipe.c:138
pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
pipe_update_tail fs/pipe.c:234 [inline]
pipe_read+0x645/0x1400 fs/pipe.c:354
call_read_iter include/linux/fs.h:2079 [inline]
new_sync_read fs/read_write.c:395 [inline]
vfs_read+0x9f3/0xb70 fs/read_write.c:476
ksys_read+0x1f0/0x250 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Memory state around the buggy address:
ffffc900041a7a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900041a7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900041a7b80: 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00
^
ffffc900041a7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900041a7c80: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00
==================================================================
==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc900041a7ba0 by task syz-executor279/5057
CPU: 1 PID: 5057 Comm: syz-executor279 Tainted: G B 6.8.0-rc1-syzkaller-00356-g8a696a29c690 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:488
kasan_report+0xda/0x110 mm/kasan/report.c:601
profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
profile_tick+0xcd/0x130 kernel/profile.c:339
tick_nohz_highres_handler+0xe9/0x110 kernel/time/tick-sched.c:1519
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x647/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:queued_read_lock_slowpath+0x131/0x2ad kernel/locking/qrwlock.c:51
Code: 85 41 01 00 00 8b 03 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 de 48 89 dd 49 c1 ee 03 83 e5 07 49 01 c6 83 c5 03 f3 90 <41> 0f b6 06 40 38 c5 7c 08 84 c0 0f 85 1b 01 00 00 8b 03 84 c0 75
RSP: 0018:ffffc900041a7b98 EFLAGS: 00000286
RAX: 00000000000002ff RBX: ffffffff8ce0a080 RCX: ffffffff8a92249b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8ce0a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff19c1410
R10: ffffffff8ce0a083 R11: 0000000000000000 R12: 1ffff92000834f74
R13: ffffffff8ce0a084 R14: fffffbfff19c1410 R15: ffffffff814fa842
__do_wait+0x105/0x890 kernel/exit.c:1584
do_wait+0x212/0x530 kernel/exit.c:1628
kernel_wait4+0x16d/0x280 kernel/exit.c:1787
__do_sys_wait4+0x15b/0x170 kernel/exit.c:1815
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff079b795b3
Code: fe ff e9 41 ff ff ff 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 80 3d d1 9a 07 00 00 49 89 ca 74 14 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5d c3 0f 1f 40 00 48 83 ec 28 89 54 24 14 48
RSP: 002b:00007ffd2a43f188 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000002e28 RCX: 00007ff079b795b3
RDX: 0000000040000001 RSI: 00007ffd2a43f19c RDI: 00000000ffffffff
RBP: 00000000000f4240 R08: 0000000000000079 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000001d8de
R13: 00007ffd2a43f19c R14: 00007ffd2a43f1b0 R15: 00007ffd2a43f1a0
The buggy address belongs to stack of task syz-executor279/5057
and is located at offset 0 in frame:
queued_read_lock_slowpath+0x0/0x2ad arch/x86/include/asm/paravirt.h:584
This frame has 1 object:
[32, 36) 'val'
The buggy address belongs to the virtual mapping at
[ffffc900041a0000, ffffc900041a9000) created by:
kernel_clone+0xfd/0x930 kernel/fork.c:2902
The buggy address belongs to the physical page:
page:ffffea0001f7f200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7dfc8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5056, tgid 5056 (syz-executor279), ts 65181628404, free_ts 59523984162
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311
__alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567
alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
__vmalloc_area_node mm/vmalloc.c:3139 [inline]
__vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3320
alloc_thread_stack_node kernel/fork.c:307 [inline]
dup_task_struct kernel/fork.c:1112 [inline]
copy_process+0x1507/0x97b0 kernel/fork.c:2327
kernel_clone+0xfd/0x930 kernel/fork.c:2902
__do_sys_clone+0xba/0x100 kernel/fork.c:3045
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free pid 5050 tgid 5050 stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2346
free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486
__folio_put_small mm/swap.c:106 [inline]
__folio_put+0xc3/0x110 mm/swap.c:129
folio_put include/linux/mm.h:1494 [inline]
put_page include/linux/mm.h:1563 [inline]
anon_pipe_buf_release+0x3fa/0x4b0 fs/pipe.c:138
pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
pipe_update_tail fs/pipe.c:234 [inline]
pipe_read+0x645/0x1400 fs/pipe.c:354
call_read_iter include/linux/fs.h:2079 [inline]
new_sync_read fs/read_write.c:395 [inline]
vfs_read+0x9f3/0xb70 fs/read_write.c:476
ksys_read+0x1f0/0x250 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Memory state around the buggy address:
ffffc900041a7a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900041a7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900041a7b80: 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00
^
ffffc900041a7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900041a7c80: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00
==================================================================
==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc900041a7ba0 by task syz-executor279/5057
CPU: 1 PID: 5057 Comm: syz-executor279 Tainted: G B 6.8.0-rc1-syzkaller-00356-g8a696a29c690 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:488
kasan_report+0xda/0x110 mm/kasan/report.c:601
profile_pc+0x179/0x190 arch/x86/kernel/time.c:44
profile_tick+0xcd/0x130 kernel/profile.c:339
tick_nohz_highres_handler+0xe9/0x110 kernel/time/tick-sched.c:1519
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x647/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:queued_read_lock_slowpath+0x131/0x2ad kernel/locking/qrwlock.c:51
Code: 85 41 01 00 00 8b 03 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 de 48 89 dd 49 c1 ee 03 83 e5 07 49 01 c6 83 c5 03 f3 90 <41> 0f b6 06 40 38 c5 7c 08 84 c0 0f 85 1b 01 00 00 8b 03 84 c0 75
RSP: 0018:ffffc900041a7b98 EFLAGS: 00000286
RAX: 00000000000002ff RBX: ffffffff8ce0a080 RCX: ffffffff8a92249b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8ce0a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff19c1410
R10: ffffffff8ce0a083 R11: 0000000000000000 R12: 1ffff92000834f74
R13: ffffffff8ce0a084 R14: fffffbfff19c1410 R15: ffffffff814fa842
__do_wait+0x105/0x890 kernel/exit.c:1584
do_wait+0x212/0x530 kernel/exit.c:1628
kernel_wait4+0x16d/0x280 kernel/exit.c:1787
__do_sys_wait4+0x15b/0x170 kernel/exit.c:1815
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff079b795b3
Code: fe ff e9 41 ff ff ff 31 c9 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 80 3d d1 9a 07 00 00 49 89 ca 74 14 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5d c3 0f 1f 40 00 48 83 ec 28 89 54 24 14 48
RSP: 002b:00007ffd2a43f188 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000002e28 RCX: 00007ff079b795b3
RDX: 0000000040000001 RSI: 00007ffd2a43f19c RDI: 00000000ffffffff
RBP: 00000000000f4240 R08: 0000000000000079 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000001d8de
R13: 00007ffd2a43f19c R14: 00007ffd2a43f1b0 R15: 00007ffd2a43f1a0
The buggy address belongs to stack of task syz-executor279/5057
and is located at offset 0 in frame:
queued_read_lock_slowpath+0x0/0x2ad arch/x86/include/asm/paravirt.h:584
This frame has 1 object:
[32, 36) 'val'
The buggy address belongs to the virtual mapping at
[ffffc900041a0000, ffffc900041a9000) created by:
kernel_clone+0xfd/0x930 kernel/fork.c:2902
The buggy address belongs to the physical page:
page:ffffea0001f7f200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7dfc8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5056, tgid 5056 (syz-executor279), ts 65181628404, free_ts 59523984162
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311
__alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567
alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
__vmalloc_area_node mm/vmalloc.c:3139 [inline]
__vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3320
alloc_thread_stack_node kernel/fork.c:307 [inline]
dup_task_struct kernel/fork.c:1112 [inline]
copy_process+0x1507/0x97b0 kernel/fork.c:2327
kernel_clone+0xfd/0x930 kernel/fork.c:2902
__do_sys_clone+0xba/0x100 kernel/fork.c:3045
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free pid 5050 tgid 5050 stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2346
free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486
__folio_put_small mm/swap.c:106 [inline]
__folio_put+0xc3/0x110 mm/swap.c:129
folio_put include/linux/mm.h:1494 [inline]
put_page include/linux/mm.h:1563 [inline]
anon_pipe_buf_release+0x3fa/0x4b0 fs/pipe.c:138
pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
pipe_update_tail fs/pipe.c:234 [inline]
pipe_read+0x645/0x1400 fs/pipe.c:354
call_read_iter include/linux/fs.h:2079 [inline]
new_sync_read fs/read_write.c:395 [inline]
vfs_read+0x9f3/0xb70 fs/read_write.c:476
ksys_read+0x1f0/0x250 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Memory state around the buggy address:
ffffc900041a7a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900041a7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900041a7b80: 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00
^
ffffc900041a7c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900041a7c80: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00
==================================================================
hrtimer: interrupt took 2078208705 ns
----------------
Code disassembly (best guess):
0: 85 41 01 test %eax,0x1(%rcx)
3: 00 00 add %al,(%rax)
5: 8b 03 mov (%rbx),%eax
7: 84 c0 test %al,%al
9: 74 36 je 0x41
b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
12: fc ff df
15: 49 89 de mov %rbx,%r14
18: 48 89 dd mov %rbx,%rbp
1b: 49 c1 ee 03 shr $0x3,%r14
1f: 83 e5 07 and $0x7,%ebp
22: 49 01 c6 add %rax,%r14
25: 83 c5 03 add $0x3,%ebp
28: f3 90 pause
* 2a: 41 0f b6 06 movzbl (%r14),%eax <-- trapping instruction
2e: 40 38 c5 cmp %al,%bpl
31: 7c 08 jl 0x3b
33: 84 c0 test %al,%al
35: 0f 85 1b 01 00 00 jne 0x156
3b: 8b 03 mov (%rbx),%eax
3d: 84 c0 test %al,%al
3f: 75 .byte 0x75