BUG: unable to handle page fault for address: fffff52002f80000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 21ffee067 P4D 21ffee067 PUD aa51c067 PMD 96c5e067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3675 Comm: ion_system_heap Not tainted 5.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:121 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline]
RIP: 0010:check_memory_region+0x9c/0x1a0 mm/kasan/generic.c:192
Code: c9 4d 0f 49 c1 49 c1 f8 03 45 85 c0 0f 84 10 01 00 00 41 83 e8 01 4e 8d 44 c0 08 eb 0d 48 83 c0 08 4c 39 c0 0f 84 a7 00 00 00 <48> 83 38 00 74 ed 4c 8d 40 08 eb 09 48 83 c0 01 49 39 c0 74 53 80
RSP: 0018:ffffc9000cadfab8 EFLAGS: 00010212
RAX: fffff52002f80000 RBX: fffff52002f81600 RCX: ffffffff85de6a29
RDX: 0000000000000001 RSI: 000000000000b000 RDI: ffffc90017c00000
RBP: ffffc9000cadfad0 R08: fffff52002f81600 R09: 0000000000001600
R10: fffff52002f815ff R11: ffffc90017c0afff R12: fffff52002f80000
R13: 000000000000b000 R14: 0000000000000000 R15: ffffc9000cadfd08
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff52002f80000 CR3: 00000000a3854000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 memset+0x24/0x40 mm/kasan/common.c:108
 memset include/linux/string.h:365 [inline]
 ion_heap_clear_pages+0x49/0x70 drivers/staging/android/ion/ion_heap.c:106
 ion_heap_sglist_zero+0x245/0x270 drivers/staging/android/ion/ion_heap.c:130
 ion_heap_buffer_zero+0xf5/0x150 drivers/staging/android/ion/ion_heap.c:145
 ion_system_heap_free+0x1eb/0x250 drivers/staging/android/ion/ion_system_heap.c:163
 ion_buffer_destroy+0x159/0x2d0 drivers/staging/android/ion/ion.c:93
 ion_heap_deferred_free+0x29d/0x630 drivers/staging/android/ion/ion_heap.c:239
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: fffff52002f80000
---[ end trace 59231c03490fe6f7 ]---
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:121 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline]
RIP: 0010:check_memory_region+0x9c/0x1a0 mm/kasan/generic.c:192
Code: c9 4d 0f 49 c1 49 c1 f8 03 45 85 c0 0f 84 10 01 00 00 41 83 e8 01 4e 8d 44 c0 08 eb 0d 48 83 c0 08 4c 39 c0 0f 84 a7 00 00 00 <48> 83 38 00 74 ed 4c 8d 40 08 eb 09 48 83 c0 01 49 39 c0 74 53 80
RSP: 0018:ffffc9000cadfab8 EFLAGS: 00010212
RAX: fffff52002f80000 RBX: fffff52002f81600 RCX: ffffffff85de6a29
RDX: 0000000000000001 RSI: 000000000000b000 RDI: ffffc90017c00000
RBP: ffffc9000cadfad0 R08: fffff52002f81600 R09: 0000000000001600
R10: fffff52002f815ff R11: ffffc90017c0afff R12: fffff52002f80000
R13: 000000000000b000 R14: 0000000000000000 R15: ffffc9000cadfd08
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff52002f80000 CR3: 00000000a3854000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400