* BUG: stack guard page was hit in __bad_area_nosemaphore
@ 2020-07-11 6:58 syzbot
0 siblings, 0 replies; only message in thread
From: syzbot @ 2020-07-11 6:58 UTC (permalink / raw)
To: andriin, ast, bpf, daniel, jeyu, john.fastabend, kafai, kpsingh,
linux-kernel, netdev, songliubraving, syzkaller-bugs, yhs
Hello,
syzbot found the following crash on:
HEAD commit: 7cc2a8ea Merge tag 'block-5.8-2020-07-01' of git://git.ker..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=135403a3100000
kernel config: https://syzkaller.appspot.com/x/.config?x=7be693511b29b338
dashboard link: https://syzkaller.appspot.com/bug?extid=89eb3f606b866757455d
compiler: gcc (GCC) 10.1.0-syz 20200507
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+89eb3f606b866757455d@syzkaller.appspotmail.com
BUG: stack guard page was hit at 0000000046f5170d (stack is 00000000087b5eff..00000000b28869c7)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 25511 Comm: syz-executor.4 Not tainted 5.8.0-rc3-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 8b 35 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 d6 df 3f 00 4c
RSP: 0018:ffffc90016598000 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88804d04c580 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc900165980d8
RBP: ffffc900165980d8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS: 00007f2d59c18700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90016597ff8 CR3: 00000000599e5000 CR4: 00000000001426f0
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:565
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:ffffc90016598188 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90016598490 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83967dab RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad5e30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
search_module_extables+0xce/0x100 kernel/module.c:4422
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:565
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:ffffc900165984b8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc900165987c0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83967dab RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad5e30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
search_module_extables+0xce/0x100 kernel/module.c:4422
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:565
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:ffffc900165987e8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90016598af0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83967dab RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad5e30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
search_module_extables+0xce/0x100 kernel/module.c:4422
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:565
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:ffffc90016598b18 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90016598e20 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83967dab RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad5e30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
search_module_extables+0xce/0x100 kernel/module.c:4422
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:565
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:ffffc90016598e48 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90016599150 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83967dab RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad5e30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
search_module_extables+0xce/0x100 kernel/module.c:4422
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:565
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:ffffc90016599178 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90016599480 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83967dab RDI: 0000000000000001
RBP: ffffffff810078f7 R08: ffffffff83ad5e30 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000000
search_module_extables+0xce/0x100 kernel/module.c:4422
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:565
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:ffffc900165994a8 EFLAGS: 00010046
RAX: 0000000000000000
Lost 804 message(s)!
---[ end trace ffd1ab463dd60bcc ]---
RIP: 0010:__bad_area_nosemaphore+0x15/0x480 arch/x86/mm/fault.c:743
Code: ff ff 4c 89 ff e8 8b 35 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 d6 df 3f 00 4c
RSP: 0018:ffffc90016598000 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88804d04c580 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc900165980d8
RBP: ffffc900165980d8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS: 00007f2d59c18700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90016597ff8 CR3: 00000000599e5000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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2020-07-11 6:58 BUG: stack guard page was hit in __bad_area_nosemaphore syzbot
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