BUG: stack guard page was hit at 00000000df0b5bc7 (stack is 000000004746d853..0000000061610521)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 17676 Comm: syz-executor.2 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__bad_area_nosemaphore+0x15/0x480 arch/x86/mm/fault.c:743
Code: ff ff 4c 89 ff e8 0b 4a 7f 00 e9 0c ff ff ff 66 0f 1f 44 00 00 41 57 41 56 45 89 c6 41 55 49 89 d5 41 54 49 89 f4 55 48 89 fd <53> 4c 8d bd 88 00 00 00 48 83 ec 28 89 4c 24 14 e8 f6 e4 3f 00 4c
RSP: 0018:ffffc90017378000 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880524ce180 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc900173780d8
RBP: ffffc900173780d8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  00007faaaedd3700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90017377ff8 CR3: 0000000099c7f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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:ffffc90017378188 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90017378490 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396b36b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad93f0 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:ffffc900173784b8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc900173787c0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396b36b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad93f0 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:ffffc900173787e8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90017378af0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396b36b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad93f0 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:ffffc90017378b18 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90017378e20 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396b36b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad93f0 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:ffffc90017378e48 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90017379150 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396b36b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad93f0 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:ffffc90017379178 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90017379480 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8396b36b RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad93f0 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:ffffc900173794a8 EFLAGS: 00010046
RAX: 0000000000000000 
Lost 818 message(s)!
---[ end trace 2e0d017db84dab3a ]---
RIP: 0010:__bad_area_nosemaphore+0x15/0x480 arch/x86/mm/fault.c:743
Code: ff ff 4c 89 ff e8 0b 4a 7f 00 e9 0c ff ff ff 66 0f 1f 44 00 00 41 57 41 56 45 89 c6 41 55 49 89 d5 41 54 49 89 f4 55 48 89 fd <53> 4c 8d bd 88 00 00 00 48 83 ec 28 89 4c 24 14 e8 f6 e4 3f 00 4c
RSP: 0018:ffffc90017378000 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880524ce180 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc900173780d8
RBP: ffffc900173780d8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  00007faaaedd3700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90017377ff8 CR3: 0000000099c7f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400