* [syzbot] [bpf?] [net?] general protection fault in __cpu_map_flush
@ 2024-07-18 21:31 syzbot
2024-07-24 11:45 ` syzbot
0 siblings, 1 reply; 3+ messages in thread
From: syzbot @ 2024-07-18 21:31 UTC (permalink / raw)
To: andrii, ast, bpf, daniel, davem, eddyz87, edumazet, haoluo,
john.fastabend, jolsa, kpsingh, kuba, linux-kernel, martin.lau,
netdev, pabeni, sdf, song, syzkaller-bugs, yonghong.song
Hello,
syzbot found the following issue on:
HEAD commit: b1bc554e009e Merge tag 'media/v6.11-1' of git://git.kernel..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=165f372d980000
kernel config: https://syzkaller.appspot.com/x/.config?x=65e004fdd6e65e46
dashboard link: https://syzkaller.appspot.com/bug?extid=c226757eb784a9da3e8b
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/eba440b3a1dc/disk-b1bc554e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7ef97684b39f/vmlinux-b1bc554e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c465a94c9348/bzImage-b1bc554e.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c226757eb784a9da3e8b@syzkaller.appspotmail.com
Oops: general protection fault, probably for non-canonical address 0xe3fffb240028e7c8: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0x1ffff92001473e40-0x1ffff92001473e47]
CPU: 0 PID: 5818 Comm: syz.2.162 Not tainted 6.10.0-syzkaller-05505-gb1bc554e009e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__cpu_map_flush+0x42/0xd0
Code: e8 e3 d9 d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 8d c7 39 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 6f c7 39 00 4c 8b 23 48 8d 7b c0
RSP: 0018:ffffc90000007bb0 EFLAGS: 00010203
RAX: 03ffff240028e7c8 RBX: 1ffff92001473e44 RCX: ffff888027121e00
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffffc9000a39f1a0
RBP: dffffc0000000000 R08: ffffffff895d4e8a R09: 1ffffffff1f5a8c5
R10: dffffc0000000000 R11: fffffbfff1f5a8c6 R12: ffffc9000a39f1a0
R13: ffffc9000a39f160 R14: ffffc9000a39f1a0 R15: dffffc0000000000
FS: 00007feb6f7916c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c343cd0 CR3: 000000001ec24000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
xdp_do_check_flushed+0x136/0x240 net/core/filter.c:4304
__napi_poll+0xe4/0x490 net/core/dev.c:6774
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6962
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
</IRQ>
<TASK>
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
tun_rx_batched+0x732/0x8f0
tun_get_user+0x2f84/0x4720 drivers/net/tun.c:2006
tun_chr_write_iter+0x113/0x1f0 drivers/net/tun.c:2052
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb6e9746df
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 8c 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 7c 8c 02 00 48
RSP: 002b:00007feb6f791010 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007feb6eb03f60 RCX: 00007feb6e9746df
RDX: 0000000000000036 RSI: 0000000020000240 RDI: 00000000000000c8
RBP: 00007feb6e9e4e5d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000036 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007feb6eb03f60 R15: 00007ffcc6c5e298
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__cpu_map_flush+0x42/0xd0
Code: e8 e3 d9 d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 8d c7 39 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 6f c7 39 00 4c 8b 23 48 8d 7b c0
RSP: 0018:ffffc90000007bb0 EFLAGS: 00010203
RAX: 03ffff240028e7c8 RBX: 1ffff92001473e44 RCX: ffff888027121e00
RDX: 0000000080000101 RSI: 0000000000000000 RDI: ffffc9000a39f1a0
RBP: dffffc0000000000 R08: ffffffff895d4e8a R09: 1ffffffff1f5a8c5
R10: dffffc0000000000 R11: fffffbfff1f5a8c6 R12: ffffc9000a39f1a0
R13: ffffc9000a39f160 R14: ffffc9000a39f1a0 R15: dffffc0000000000
FS: 00007feb6f7916c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c343cd0 CR3: 000000001ec24000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: e8 e3 d9 d6 ff call 0xffd6d9e8
5: 4c 89 f0 mov %r14,%rax
8: 48 c1 e8 03 shr $0x3,%rax
c: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
11: 74 08 je 0x1b
13: 4c 89 f7 mov %r14,%rdi
16: e8 8d c7 39 00 call 0x39c7a8
1b: 49 8b 1e mov (%r14),%rbx
1e: 4c 39 f3 cmp %r14,%rbx
21: 74 77 je 0x9a
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 6f c7 39 00 call 0x39c7a8
39: 4c 8b 23 mov (%rbx),%r12
3c: 48 8d 7b c0 lea -0x40(%rbx),%rdi
---
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 syzkaller@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 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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [syzbot] [bpf?] [net?] general protection fault in __cpu_map_flush
2024-07-18 21:31 [syzbot] [bpf?] [net?] general protection fault in __cpu_map_flush syzbot
@ 2024-07-24 11:45 ` syzbot
2024-07-24 14:43 ` Toke Høiland-Jørgensen
0 siblings, 1 reply; 3+ messages in thread
From: syzbot @ 2024-07-24 11:45 UTC (permalink / raw)
To: andrii, ast, bpf, daniel, davem, eddyz87, edumazet, haoluo,
john.fastabend, jolsa, kpsingh, kuba, linux-kernel, martin.lau,
netdev, pabeni, sdf, song, syzkaller-bugs, yonghong.song
syzbot has found a reproducer for the following issue on:
HEAD commit: 9ec6ec93f2c1 Add linux-next specific files for 20240724
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=10e71ca1980000
kernel config: https://syzkaller.appspot.com/x/.config?x=83e9d0906fa0e2bd
dashboard link: https://syzkaller.appspot.com/bug?extid=c226757eb784a9da3e8b
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=17c0f8e3980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=151b9919980000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c0ab2da24b1f/disk-9ec6ec93.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/da6faf16185f/vmlinux-9ec6ec93.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1ad900571155/bzImage-9ec6ec93.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c226757eb784a9da3e8b@syzkaller.appspotmail.com
Oops: general protection fault, probably for non-canonical address 0xe3fffb24002e6fe6: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0x1ffff92001737f30-0x1ffff92001737f37]
CPU: 1 UID: 0 PID: 11878 Comm: syz-executor412 Not tainted 6.10.0-next-20240724-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__cpu_map_flush+0x42/0xd0
Code: e8 13 8c d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 4d 12 3e 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 2f 12 3e 00 4c 8b 23 48 8d 7b c0
RSP: 0018:ffffc90000a18b10 EFLAGS: 00010202
RAX: 03ffff24002e6fe6 RBX: 1ffff92001737f30 RCX: ffff888074dc8000
RDX: 0000000080000101 RSI: 0000000000000010 RDI: ffffc9000b9bf800
RBP: dffffc0000000000 R08: ffffffff896d3b5a R09: 1ffffffff1f5f375
R10: dffffc0000000000 R11: fffffbfff1f5f376 R12: ffffc9000b9bf800
R13: ffffc9000b9bf820 R14: ffffc9000b9bf800 R15: dffffc0000000000
FS: 0000555592677380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd44da640f0 CR3: 000000001ea68000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
xdp_do_check_flushed+0x136/0x240 net/core/filter.c:4304
__napi_poll+0xe4/0x490 net/core/dev.c:6774
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6962
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278
</IRQ>
<TASK>
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:207
Code: 40 d7 03 00 65 8b 15 10 0c 70 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 <83> fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc
RSP: 0018:ffffc9000b9bf8a0 EFLAGS: 00000246
RAX: ffffffff81410dcc RBX: 0000000000000000 RCX: ffff888074dc8000
RDX: 0000000000000000 RSI: ffffffff8b942412 RDI: ffffffff8b942328
RBP: 1ffff92001737f30 R08: ffffffff81410c60 R09: ffffc9000b9bfa70
R10: 0000000000000003 R11: ffffffff817f7030 R12: ffffffff90294810
R13: dffffc0000000000 R14: 1ffff92001737f30 R15: ffffffff90d0fbd4
unwind_next_frame+0x67c/0x2a00 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
__dentry_kill+0x497/0x630 fs/dcache.c:629
dput+0x19f/0x2b0 fs/dcache.c:852
__fput+0x5f8/0x8a0 fs/file_table.c:430
__do_sys_close fs/open.c:1566 [inline]
__se_sys_close fs/open.c:1551 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1551
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd44d9ed9c0
Code: ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 80 3d e1 76 07 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
RSP: 002b:00007fff7a1e95b8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd44d9ed9c0
RDX: 0000000000000e80 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007fff7a1e9600 R08: 00007fff7a1e95e0 R09: 00007fff7a1e95e0
R10: 00007fff7a1e95e0 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__cpu_map_flush+0x42/0xd0
Code: e8 13 8c d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 4d 12 3e 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 2f 12 3e 00 4c 8b 23 48 8d 7b c0
RSP: 0018:ffffc90000a18b10 EFLAGS: 00010202
RAX: 03ffff24002e6fe6 RBX: 1ffff92001737f30 RCX: ffff888074dc8000
RDX: 0000000080000101 RSI: 0000000000000010 RDI: ffffc9000b9bf800
RBP: dffffc0000000000 R08: ffffffff896d3b5a R09: 1ffffffff1f5f375
R10: dffffc0000000000 R11: fffffbfff1f5f376 R12: ffffc9000b9bf800
R13: ffffc9000b9bf820 R14: ffffc9000b9bf800 R15: dffffc0000000000
FS: 0000555592677380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd44da640f0 CR3: 000000001ea68000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: e8 13 8c d6 ff call 0xffd68c18
5: 4c 89 f0 mov %r14,%rax
8: 48 c1 e8 03 shr $0x3,%rax
c: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
11: 74 08 je 0x1b
13: 4c 89 f7 mov %r14,%rdi
16: e8 4d 12 3e 00 call 0x3e1268
1b: 49 8b 1e mov (%r14),%rbx
1e: 4c 39 f3 cmp %r14,%rbx
21: 74 77 je 0x9a
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 2f 12 3e 00 call 0x3e1268
39: 4c 8b 23 mov (%rbx),%r12
3c: 48 8d 7b c0 lea -0x40(%rbx),%rdi
---
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.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [syzbot] [bpf?] [net?] general protection fault in __cpu_map_flush
2024-07-24 11:45 ` syzbot
@ 2024-07-24 14:43 ` Toke Høiland-Jørgensen
0 siblings, 0 replies; 3+ messages in thread
From: Toke Høiland-Jørgensen @ 2024-07-24 14:43 UTC (permalink / raw)
To: Sebastian Andrzej Siewior
Cc: syzbot, andrii, ast, bpf, daniel, davem, eddyz87, edumazet,
haoluo, john.fastabend, jolsa, kpsingh, kuba, linux-kernel,
martin.lau, netdev, pabeni, sdf, song, syzkaller-bugs,
yonghong.song
Hi Sebastian
The syzbot splat below shows up in recent -next kernels which
sorta-kinda wags its finger suggestively at the bpf_net_ctx_get()
changes. There's one for __dev_flush() as well:
https://lore.kernel.org/r/0000000000009d1d0a061d91b803@google.com
Care to take a look? :)
Thanks!
-Toke
syzbot <syzbot+c226757eb784a9da3e8b@syzkaller.appspotmail.com> writes:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 9ec6ec93f2c1 Add linux-next specific files for 20240724
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=10e71ca1980000
> kernel config: https://syzkaller.appspot.com/x/.config?x=83e9d0906fa0e2bd
> dashboard link: https://syzkaller.appspot.com/bug?extid=c226757eb784a9da3e8b
> 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=17c0f8e3980000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=151b9919980000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/c0ab2da24b1f/disk-9ec6ec93.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/da6faf16185f/vmlinux-9ec6ec93.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/1ad900571155/bzImage-9ec6ec93.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+c226757eb784a9da3e8b@syzkaller.appspotmail.com
>
> Oops: general protection fault, probably for non-canonical address 0xe3fffb24002e6fe6: 0000 [#1] PREEMPT SMP KASAN PTI
> KASAN: maybe wild-memory-access in range [0x1ffff92001737f30-0x1ffff92001737f37]
> CPU: 1 UID: 0 PID: 11878 Comm: syz-executor412 Not tainted 6.10.0-next-20240724-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
> RIP: 0010:__cpu_map_flush+0x42/0xd0
> Code: e8 13 8c d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 4d 12 3e 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 2f 12 3e 00 4c 8b 23 48 8d 7b c0
> RSP: 0018:ffffc90000a18b10 EFLAGS: 00010202
> RAX: 03ffff24002e6fe6 RBX: 1ffff92001737f30 RCX: ffff888074dc8000
> RDX: 0000000080000101 RSI: 0000000000000010 RDI: ffffc9000b9bf800
> RBP: dffffc0000000000 R08: ffffffff896d3b5a R09: 1ffffffff1f5f375
> R10: dffffc0000000000 R11: fffffbfff1f5f376 R12: ffffc9000b9bf800
> R13: ffffc9000b9bf820 R14: ffffc9000b9bf800 R15: dffffc0000000000
> FS: 0000555592677380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fd44da640f0 CR3: 000000001ea68000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
> <IRQ>
> xdp_do_check_flushed+0x136/0x240 net/core/filter.c:4304
> __napi_poll+0xe4/0x490 net/core/dev.c:6774
> napi_poll net/core/dev.c:6840 [inline]
> net_rx_action+0x89b/0x1240 net/core/dev.c:6962
> handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
> __do_softirq kernel/softirq.c:588 [inline]
> invoke_softirq kernel/softirq.c:428 [inline]
> __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
> irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
> common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278
> </IRQ>
> <TASK>
> asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
> RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
> RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:207
> Code: 40 d7 03 00 65 8b 15 10 0c 70 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 <83> fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc
> RSP: 0018:ffffc9000b9bf8a0 EFLAGS: 00000246
> RAX: ffffffff81410dcc RBX: 0000000000000000 RCX: ffff888074dc8000
> RDX: 0000000000000000 RSI: ffffffff8b942412 RDI: ffffffff8b942328
> RBP: 1ffff92001737f30 R08: ffffffff81410c60 R09: ffffc9000b9bfa70
> R10: 0000000000000003 R11: ffffffff817f7030 R12: ffffffff90294810
> R13: dffffc0000000000 R14: 1ffff92001737f30 R15: ffffffff90d0fbd4
> unwind_next_frame+0x67c/0x2a00 arch/x86/kernel/unwind_orc.c:495
> arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
> stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
> kasan_save_stack mm/kasan/common.c:47 [inline]
> kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
> kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
> poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
> __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
> kasan_slab_free include/linux/kasan.h:184 [inline]
> slab_free_hook mm/slub.c:2252 [inline]
> slab_free mm/slub.c:4473 [inline]
> kmem_cache_free+0x145/0x350 mm/slub.c:4548
> __dentry_kill+0x497/0x630 fs/dcache.c:629
> dput+0x19f/0x2b0 fs/dcache.c:852
> __fput+0x5f8/0x8a0 fs/file_table.c:430
> __do_sys_close fs/open.c:1566 [inline]
> __se_sys_close fs/open.c:1551 [inline]
> __x64_sys_close+0x7f/0x110 fs/open.c:1551
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7fd44d9ed9c0
> Code: ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 80 3d e1 76 07 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
> RSP: 002b:00007fff7a1e95b8 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
> RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd44d9ed9c0
> RDX: 0000000000000e80 RSI: 0000000020000100 RDI: 0000000000000004
> RBP: 00007fff7a1e9600 R08: 00007fff7a1e95e0 R09: 00007fff7a1e95e0
> R10: 00007fff7a1e95e0 R11: 0000000000000202 R12: 0000000000000000
> R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
> </TASK>
> Modules linked in:
> ---[ end trace 0000000000000000 ]---
> RIP: 0010:__cpu_map_flush+0x42/0xd0
> Code: e8 13 8c d6 ff 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 4d 12 3e 00 49 8b 1e 4c 39 f3 74 77 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 2f 12 3e 00 4c 8b 23 48 8d 7b c0
> RSP: 0018:ffffc90000a18b10 EFLAGS: 00010202
> RAX: 03ffff24002e6fe6 RBX: 1ffff92001737f30 RCX: ffff888074dc8000
> RDX: 0000000080000101 RSI: 0000000000000010 RDI: ffffc9000b9bf800
> RBP: dffffc0000000000 R08: ffffffff896d3b5a R09: 1ffffffff1f5f375
> R10: dffffc0000000000 R11: fffffbfff1f5f376 R12: ffffc9000b9bf800
> R13: ffffc9000b9bf820 R14: ffffc9000b9bf800 R15: dffffc0000000000
> FS: 0000555592677380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fd44da640f0 CR3: 000000001ea68000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> ----------------
> Code disassembly (best guess):
> 0: e8 13 8c d6 ff call 0xffd68c18
> 5: 4c 89 f0 mov %r14,%rax
> 8: 48 c1 e8 03 shr $0x3,%rax
> c: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
> 11: 74 08 je 0x1b
> 13: 4c 89 f7 mov %r14,%rdi
> 16: e8 4d 12 3e 00 call 0x3e1268
> 1b: 49 8b 1e mov (%r14),%rbx
> 1e: 4c 39 f3 cmp %r14,%rbx
> 21: 74 77 je 0x9a
> 23: 48 89 d8 mov %rbx,%rax
> 26: 48 c1 e8 03 shr $0x3,%rax
> * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction
> 2f: 74 08 je 0x39
> 31: 48 89 df mov %rbx,%rdi
> 34: e8 2f 12 3e 00 call 0x3e1268
> 39: 4c 8b 23 mov (%rbx),%r12
> 3c: 48 8d 7b c0 lea -0x40(%rbx),%rdi
>
>
> ---
> 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.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2024-07-24 14:44 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2024-07-18 21:31 [syzbot] [bpf?] [net?] general protection fault in __cpu_map_flush syzbot
2024-07-24 11:45 ` syzbot
2024-07-24 14:43 ` Toke Høiland-Jørgensen
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