syzbot


BUG: stack guard page was hit in no_context

Status: auto-closed as invalid on 2021/01/29 13:07
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+b344c6786fc0f8409a1c@syzkaller.appspotmail.com
First crash: 1351d, last: 1264d
Discussions (1)
Title Replies (including bot) Last reply
BUG: stack guard page was hit in no_context 0 (1) 2020/07/11 06:55

Sample crash report:
BUG: stack guard page was hit at 000000009613e8bc (stack is 00000000646bace8..000000003268d9e8)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:no_context+0x33/0x9f0 arch/x86/mm/fault.c:630
Code: 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 9d 88 00 00 00 48 81 ec d0 00 00 00 48 8d 44 24 30 <44> 89 44 24 10 48 c7 44 24 30 b3 8a b5 41 48 c1 e8 03 48 89 04 24
RSP: 0018:ffffc90000cd7f50 EFLAGS: 00010086
RAX: ffffc90000cd7f80 RBX: ffffc90000cd81e0 RCX: 000000000000000b
RDX: 0000000000000007 RSI: 0000000000000002 RDI: ffffc90000cd8158
RBP: ffffc90000cd8158 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000007
R13: 0000000000000002 R14: 000000000000000b R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000cd7f48 CR3: 0000000087cee000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835
 do_user_addr_fault+0x760/0xbf0 arch/x86/mm/fault.c:1248
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 77 00 00 70 07 00 00 00 00 00 77 77 77 77 00 70 07 00 77 00 70 07 00 77 00 00 00 00 00 00 77 00 00 00 00 00 00 00 77 00 00 <00> 70 07 00 00 00 70 07 00 00 70 07 00 77 00 00 00 00 70 07 00 77
RSP: 0018:ffffc90000cd8200 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000cd8500 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83beffbb RDI: 0000000000000001
RBP: ffffffff81007927 R08: ffffffff83d72120 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000007
 search_module_extables+0xce/0x100 kernel/module.c:4469
 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:645
 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835
 do_user_addr_fault+0x760/0xbf0 arch/x86/mm/fault.c:1248
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 77 00 00 70 07 00 00 00 00 00 77 77 77 77 00 70 07 00 77 00 70 07 00 77 00 00 00 00 00 00 77 00 00 00 00 00 00 00 77 00 00 <00> 70 07 00 00 00 70 07 00 00 70 07 00 77 00 00 00 00 70 07 00 77
RSP: 0018:ffffc90000cd8520 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000cd8820 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83beffbb RDI: 0000000000000001
RBP: ffffffff81007927 R08: ffffffff83d72120 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000007
 search_module_extables+0xce/0x100 kernel/module.c:4469
 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:645
 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835
 do_user_addr_fault+0x760/0xbf0 arch/x86/mm/fault.c:1248
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 77 00 00 70 07 00 00 00 00 00 77 77 77 77 00 70 07 00 77 00 70 07 00 77 00 00 00 00 00 00 77 00 00 00 00 00 00 00 77 00 00 <00> 70 07 00 00 00 70 07 00 00 70 07 00 77 00 00 00 00 70 07 00 77
RSP: 0018:ffffc90000cd8840 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000cd8b40 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83beffbb RDI: 0000000000000001
RBP: ffffffff81007927 R08: ffffffff83d72120 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000007
 search_module_extables+0xce/0x100 kernel/module.c:4469
 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:645
 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835
 do_user_addr_fault+0x760/0xbf0 arch/x86/mm/fault.c:1248
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 77 00 00 70 07 00 00 00 00 00 77 77 77 77 00 70 07 00 77 00 70 07 00 77 00 00 00 00 00 00 77 00 00 00 00 00 00 00 77 00 00 <00> 70 07 00 00 00 70 07 00 00 70 07 00 77 00 00 00 00 70 07 00 77
RSP: 0018:ffffc90000cd8b60 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000cd8e60 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83beffbb RDI: 0000000000000001
RBP: ffffffff81007927 R08: ffffffff83d72120 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000007
 search_module_extables+0xce/0x100 kernel/module.c:4469
 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:645
 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835
 do_user_addr_fault+0x760/0xbf0 arch/x86/mm/fault.c:1248
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 77 00 00 70 07 00 00 00 00 00 77 77 77 77 00 70 07 00 77 00 70 07 00 77 00 00 00 00 00 00 77 00 00 00 00 00 00 00 77 00 00 <00> 70 07 00 00 00 70 07 00 00 70 07 00 77 00 00 00 00 70 07 00 77
RSP: 0018:ffffc90000cd8e80 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000cd9180 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83beffbb RDI: 0000000000000001
RBP: ffffffff81007927 R08: ffffffff83d72120 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000007
 search_module_extables+0xce/0x100 kernel/module.c:4469
 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:645
 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835
 do_user_addr_fault+0x760/0xbf0 arch/x86/mm/fault.c:1248
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 77 00 00 70 07 00 00 00 00 00 77 77 77 77 00 70 07 00 77 00 70 07 00 77 00 00 00 00 00 00 77 00 00 00 00 00 00 00 77 00 00 <00> 70 07 00 00 00 70 07 00 00 70 07 00 77 00 00 00 00 70 07 00 77
RSP: 0018:ffffc90000cd91a0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffc90000cd94a0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff83beffbb RDI: 0000000000000001
RBP: ffffffff81007927 R08: ffffffff83d72120 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000e R14: 0000000000000002 R15: 0000000000000007
 search_module_extables+0xce/0x100 kernel/module.c:4469
 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:645
 __bad_area_nosemaphore+0xa9/0x4f0 arch/x86/mm/fault.c:835
 do_user_addr_fault+0x760/0xbf0 arch/x86/mm/fault.c:1248
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0010:preempt_schedule_thunk+0x0/0x18 arch/x86/entry/thunk_64.S:40
Code: 00 77 00 00 70 07 00 00 00 00 00 77 77 77 77 00 70 07 00 77 00 70 07 00 77 00 00 00 00 00 00 77 00 00 00 00 00 00 00 77 00 00 <00> 70 07 00 00 00 70 07 00 00 70 07 00 77 00 00 00 00 70 07 00 77
RSP: 0018:
Lost 872 message(s)!
BUG: stack guard page was hit at 000000005ef54441 (stack is 00000000dae81d7e..00000000110e5c13)
Shutting down cpus with NMI
Kernel Offset: disabled

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/10/01 13:06 upstream 60e720931556 a9767fb2 .config console log report info ci-upstream-kasan-gce-selinux-root
2020/08/30 02:15 upstream 4d41ead6ead9 d5a3ae1f .config console log report ci-upstream-kasan-gce
2020/08/19 17:57 upstream 18445bf405cb 94b45706 .config console log report ci-upstream-kasan-gce
2020/08/14 21:47 upstream a1d21081a60d 424dd8e7 .config console log report ci-upstream-kasan-gce
2020/07/21 01:38 upstream 5714ee50bb43 4285ffa3 .config console log report ci-upstream-kasan-gce-root
2020/07/07 02:25 upstream 7cc2a8ea1048 51095195 .config console log report ci-upstream-kasan-gce-selinux-root
2020/08/24 20:11 linux-next d8be0e12a522 67b599d1 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.