BUG: stack guard page was hit at 00000000035efd96 (stack is 000000004f045e20..00000000c458c5d3)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 39 Comm: kworker/u4:2 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krdsd rds_tcp_accept_worker
RIP: 0010:no_context+0xc/0x9f0 arch/x86/mm/fault.c:584
Code: 48 89 ee 44 89 e2 5d 4c 89 ef 41 5c 41 5d 41 5e e9 09 1e f5 ff 66 0f 1f 84 00 00 00 00 00 41 57 49 bf 00 00 00 00 00 fc ff df <41> 56 41 89 ce 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 8d
RSP: 0018:ffffc90000ea0000 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000b
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc90000ea0118
RBP: ffffc90000ea0118 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000e9fff8 CR3: 0000000086d12000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789
 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000ea01c8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000ea04d0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396ab0b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad8b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
 search_module_extables+0xce/0x100 kernel/module.c:4425
 search_exception_tables+0x42/0x50 kernel/extable.c:59
 fixup_exception+0x4b/0xca arch/x86/mm/extable.c:161
 no_context+0xe7/0x9f0 arch/x86/mm/fault.c:599
 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789
 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000ea04f8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000ea0800 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396ab0b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad8b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
 search_module_extables+0xce/0x100 kernel/module.c:4425
 search_exception_tables+0x42/0x50 kernel/extable.c:59
 fixup_exception+0x4b/0xca arch/x86/mm/extable.c:161
 no_context+0xe7/0x9f0 arch/x86/mm/fault.c:599
 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789
 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000ea0828 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000ea0b30 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396ab0b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad8b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
 search_module_extables+0xce/0x100 kernel/module.c:4425
 search_exception_tables+0x42/0x50 kernel/extable.c:59
 fixup_exception+0x4b/0xca arch/x86/mm/extable.c:161
 no_context+0xe7/0x9f0 arch/x86/mm/fault.c:599
 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789
 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000ea0b58 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000ea0e60 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396ab0b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad8b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
 search_module_extables+0xce/0x100 kernel/module.c:4425
 search_exception_tables+0x42/0x50 kernel/extable.c:59
 fixup_exception+0x4b/0xca arch/x86/mm/extable.c:161
 no_context+0xe7/0x9f0 arch/x86/mm/fault.c:599
 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789
 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000ea0e88 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000ea1190 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396ab0b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad8b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
 search_module_extables+0xce/0x100 kernel/module.c:4425
 search_exception_tables+0x42/0x50 kernel/extable.c:59
 fixup_exception+0x4b/0xca arch/x86/mm/extable.c:161
 no_context+0xe7/0x9f0 arch/x86/mm/fault.c:599
 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789
 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000ea11b8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000ea14c0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396ab0b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad8b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
 search_module_extables+0xce/0x100 kernel/module.c:4425
 search_exception_tables+0x42/0x50 kernel/extable.c:59
 fixup_exception+0x4b/0xca arch/x86/mm/extable.c:161
 no_context+0xe7/0x9f0 arch/x86/mm/fault.c:599
 __bad_area_nosemaphore+0xa9/0x480 arch/x86/mm/fault.c:789
 do_user_addr_fault+0x783/0xd00 arch/x86/mm/fault.c:1171
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:
Lost 826 message(s)!
---[ end trace 0d465258bd1d1b95 ]---
RIP: 0010:no_context+0xc/0x9f0 arch/x86/mm/fault.c:584
Code: 48 89 ee 44 89 e2 5d 4c 89 ef 41 5c 41 5d 41 5e e9 09 1e f5 ff 66 0f 1f 84 00 00 00 00 00 41 57 49 bf 00 00 00 00 00 fc ff df <41> 56 41 89 ce 41 55 49 89 f5 41 54 49 89 d4 55 48 89 fd 53 48 8d
RSP: 0018:ffffc90000ea0000 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000b
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc90000ea0118
RBP: ffffc90000ea0118 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000e9fff8 CR3: 0000000086d12000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400