[v6.1] BUG: unable to handle kernel paging request in hash
1 view
Skip to first unread message
syzbot
Apr 2, 2024, 1:12:25 PMApr 2
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: e5cd595e23c1 Linux 6.1.83
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15daad5e180000
kernel config: https://syzkaller.appspot.com/x/.config?x=99d0cbbc2b2c7cfd
dashboard link: https://syzkaller.appspot.com/bug?extid=478c1c0addba4f4ce6d1
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e39d29180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f8bfc3180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/607b4730a2cc/disk-e5cd595e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/265e84c69ac5/vmlinux-e5cd595e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/af893c46019b/bzImage-e5cd595e.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+478c1c...@syzkaller.appspotmail.com
BUG: unable to handle page fault for address: ffffc90003a20000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 12400067
P4D 12400067
PUD 1261d067
PMD 1ea41067
PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3545 Comm: syz-executor215 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:jhash2 include/linux/jhash.h:128 [inline]
RIP: 0010:hash+0x103/0xab0 kernel/bpf/bloom_filter.c:36
Code: e8 03 0f b6 04 10 84 c0 0f 85 b4 00 00 00 41 03 6c 24 f8 49 8d 7f 08 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 bc 00 00 00 <45> 03 6c 24 fc 44 29 eb 44 89 e8 c1 c0 04 31 d8 41 01 ed 89 c1 c1
RSP: 0018:ffffc90003a1fb58 EFLAGS: 00010292
RAX: 0000000000000000 RBX: 000000001f11dd37 RCX: ffffffff81a59ca4
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90003a20000
RBP: 00000000a85c037c R08: ffffffff81a59b64 R09: fffffbfff2092e45
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90003a20004
R13: 00000000066f947f R14: 000000003ffffe81 R15: ffffc90003a1fff8
FS: 00005555570c1380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90003a20000 CR3: 0000000076e70000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
bloom_map_peek_elem+0xb1/0x1b0 kernel/bpf/bloom_filter.c:51
bpf_prog_00798911c748094f+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2312
__traceiter_ext4_drop_inode+0x6b/0xb0 include/trace/events/ext4.h:251
trace_ext4_drop_inode include/trace/events/ext4.h:251 [inline]
ext4_drop_inode+0x256/0x2e0 fs/ext4/super.c:1365
iput_final fs/inode.c:1761 [inline]
iput+0x4ca/0x980 fs/inode.c:1817
do_unlinkat+0x509/0x820 fs/namei.c:4399
__do_sys_unlink fs/namei.c:4440 [inline]
__se_sys_unlink fs/namei.c:4438 [inline]
__x64_sys_unlink+0x45/0x50 fs/namei.c:4438
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7e51025fc7
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffea6f4abd8 EFLAGS: 00000206
ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e51025fc7
RDX: 00007ffea6f4ac00 RSI: 00007ffea6f4ac90 RDI: 00007ffea6f4ac90
RBP: 00007ffea6f4ac90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffea6f4bd00
R13: 00005555570c26c0 R14: 00007ffea6f4bd00 R15: 0000000000000002
</TASK>
Modules linked in:
CR2: ffffc90003a20000
---[ end trace 0000000000000000 ]---
RIP: 0010:jhash2 include/linux/jhash.h:128 [inline]
RIP: 0010:hash+0x103/0xab0 kernel/bpf/bloom_filter.c:36
Code: e8 03 0f b6 04 10 84 c0 0f 85 b4 00 00 00 41 03 6c 24 f8 49 8d 7f 08 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 bc 00 00 00 <45> 03 6c 24 fc 44 29 eb 44 89 e8 c1 c0 04 31 d8 41 01 ed 89 c1 c1
RSP: 0018:ffffc90003a1fb58 EFLAGS: 00010292
RAX: 0000000000000000 RBX: 000000001f11dd37 RCX: ffffffff81a59ca4
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90003a20000
RBP: 00000000a85c037c R08: ffffffff81a59b64 R09: fffffbfff2092e45
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90003a20004
R13: 00000000066f947f R14: 000000003ffffe81 R15: ffffc90003a1fff8
FS: 00005555570c1380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90003a20000 CR3: 0000000076e70000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: e8 03 0f b6 04 call 0x4b60f08
5: 10 84 c0 0f 85 b4 00 adc %al,0xb4850f(%rax,%rax,8)
c: 00 00 add %al,(%rax)
e: 41 03 6c 24 f8 add -0x8(%r12),%ebp
13: 49 8d 7f 08 lea 0x8(%r15),%rdi
17: 48 89 f8 mov %rdi,%rax
1a: 48 c1 e8 03 shr $0x3,%rax
1e: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax
22: 84 c0 test %al,%al
24: 0f 85 bc 00 00 00 jne 0xe6
* 2a: 45 03 6c 24 fc add -0x4(%r12),%r13d <-- trapping instruction
2f: 44 29 eb sub %r13d,%ebx
32: 44 89 e8 mov %r13d,%eax
35: c1 c0 04 rol $0x4,%eax
38: 31 d8 xor %ebx,%eax
3a: 41 01 ed add %ebp,%r13d
3d: 89 c1 mov %eax,%ecx
3f: c1 .byte 0xc1
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: e5cd595e23c1 Linux 6.1.83
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15daad5e180000
kernel config: https://syzkaller.appspot.com/x/.config?x=99d0cbbc2b2c7cfd
dashboard link: https://syzkaller.appspot.com/bug?extid=478c1c0addba4f4ce6d1
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e39d29180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11f8bfc3180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/607b4730a2cc/disk-e5cd595e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/265e84c69ac5/vmlinux-e5cd595e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/af893c46019b/bzImage-e5cd595e.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+478c1c...@syzkaller.appspotmail.com
BUG: unable to handle page fault for address: ffffc90003a20000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 12400067
P4D 12400067
PUD 1261d067
PMD 1ea41067
PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3545 Comm: syz-executor215 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:jhash2 include/linux/jhash.h:128 [inline]
RIP: 0010:hash+0x103/0xab0 kernel/bpf/bloom_filter.c:36
Code: e8 03 0f b6 04 10 84 c0 0f 85 b4 00 00 00 41 03 6c 24 f8 49 8d 7f 08 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 bc 00 00 00 <45> 03 6c 24 fc 44 29 eb 44 89 e8 c1 c0 04 31 d8 41 01 ed 89 c1 c1
RSP: 0018:ffffc90003a1fb58 EFLAGS: 00010292
RAX: 0000000000000000 RBX: 000000001f11dd37 RCX: ffffffff81a59ca4
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90003a20000
RBP: 00000000a85c037c R08: ffffffff81a59b64 R09: fffffbfff2092e45
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90003a20004
R13: 00000000066f947f R14: 000000003ffffe81 R15: ffffc90003a1fff8
FS: 00005555570c1380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90003a20000 CR3: 0000000076e70000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
bloom_map_peek_elem+0xb1/0x1b0 kernel/bpf/bloom_filter.c:51
bpf_prog_00798911c748094f+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2312
__traceiter_ext4_drop_inode+0x6b/0xb0 include/trace/events/ext4.h:251
trace_ext4_drop_inode include/trace/events/ext4.h:251 [inline]
ext4_drop_inode+0x256/0x2e0 fs/ext4/super.c:1365
iput_final fs/inode.c:1761 [inline]
iput+0x4ca/0x980 fs/inode.c:1817
do_unlinkat+0x509/0x820 fs/namei.c:4399
__do_sys_unlink fs/namei.c:4440 [inline]
__se_sys_unlink fs/namei.c:4438 [inline]
__x64_sys_unlink+0x45/0x50 fs/namei.c:4438
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7e51025fc7
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffea6f4abd8 EFLAGS: 00000206
ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e51025fc7
RDX: 00007ffea6f4ac00 RSI: 00007ffea6f4ac90 RDI: 00007ffea6f4ac90
RBP: 00007ffea6f4ac90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffea6f4bd00
R13: 00005555570c26c0 R14: 00007ffea6f4bd00 R15: 0000000000000002
</TASK>
Modules linked in:
CR2: ffffc90003a20000
---[ end trace 0000000000000000 ]---
RIP: 0010:jhash2 include/linux/jhash.h:128 [inline]
RIP: 0010:hash+0x103/0xab0 kernel/bpf/bloom_filter.c:36
Code: e8 03 0f b6 04 10 84 c0 0f 85 b4 00 00 00 41 03 6c 24 f8 49 8d 7f 08 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 bc 00 00 00 <45> 03 6c 24 fc 44 29 eb 44 89 e8 c1 c0 04 31 d8 41 01 ed 89 c1 c1
RSP: 0018:ffffc90003a1fb58 EFLAGS: 00010292
RAX: 0000000000000000 RBX: 000000001f11dd37 RCX: ffffffff81a59ca4
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90003a20000
RBP: 00000000a85c037c R08: ffffffff81a59b64 R09: fffffbfff2092e45
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90003a20004
R13: 00000000066f947f R14: 000000003ffffe81 R15: ffffc90003a1fff8
FS: 00005555570c1380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90003a20000 CR3: 0000000076e70000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: e8 03 0f b6 04 call 0x4b60f08
5: 10 84 c0 0f 85 b4 00 adc %al,0xb4850f(%rax,%rax,8)
c: 00 00 add %al,(%rax)
e: 41 03 6c 24 f8 add -0x8(%r12),%ebp
13: 49 8d 7f 08 lea 0x8(%r15),%rdi
17: 48 89 f8 mov %rdi,%rax
1a: 48 c1 e8 03 shr $0x3,%rax
1e: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax
22: 84 c0 test %al,%al
24: 0f 85 bc 00 00 00 jne 0xe6
* 2a: 45 03 6c 24 fc add -0x4(%r12),%r13d <-- trapping instruction
2f: 44 29 eb sub %r13d,%ebx
32: 44 89 e8 mov %r13d,%eax
35: c1 c0 04 rol $0x4,%eax
38: 31 d8 xor %ebx,%eax
3a: 41 01 ed add %ebp,%r13d
3d: 89 c1 mov %eax,%ecx
3f: c1 .byte 0xc1
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
Reply all
Reply to author
Forward
0 new messages