On Wed, 18 Dec 2024 01:23:17 -0800 syzbot <[email protected]> wrote:
> syzbot has found a reproducer for the following issue on: It only found a reproducer when it introduces faults. Again, this needs to report that faults were injected, because I can guarantee that this would never reproduce any bug if you do not inject faults. The fault is a requirement for the warning to happen. Come back to me when you can reproduce it without fault injection. -- Steve > > HEAD commit: aef25be35d23 hexagon: Disable constant extender optimizati.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=10b2cb44580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c22efbd20f8da769 > dashboard link: https://syzkaller.appspot.com/bug?extid=a1d25e53cd4a10f7f2d3 > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for > Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=175342df980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17140cf8580000 > > Downloadable assets: > disk image: > https://storage.googleapis.com/syzbot-assets/aa655a321f64/disk-aef25be3.raw.xz > vmlinux: > https://storage.googleapis.com/syzbot-assets/222a3010db12/vmlinux-aef25be3.xz > kernel image: > https://storage.googleapis.com/syzbot-assets/7eab659ce042/bzImage-aef25be3.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: [email protected] > > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 5829 at kernel/tracepoint.c:358 tracepoint_remove_func > kernel/tracepoint.c:358 [inline] > WARNING: CPU: 1 PID: 5829 at kernel/tracepoint.c:358 > tracepoint_probe_unregister+0x894/0xd70 kernel/tracepoint.c:504 > Modules linked in: > CPU: 1 UID: 0 PID: 5829 Comm: syz-executor241 Not tainted > 6.13.0-rc3-syzkaller-00044-gaef25be35d23 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 11/25/2024 > RIP: 0010:tracepoint_remove_func kernel/tracepoint.c:358 [inline] > RIP: 0010:tracepoint_probe_unregister+0x894/0xd70 kernel/tracepoint.c:504 > Code: 41 5e 41 5f c3 cc cc cc cc e8 68 27 fe ff 48 c7 c6 60 16 9b 81 48 89 df > e8 49 52 e5 ff eb 9f bb fe ff ff ff e8 4d 27 fe ff 90 <0f> 0b 90 eb 91 e8 42 > 27 fe ff 48 89 da 48 b8 00 00 00 00 00 fc ff > RSP: 0018:ffffc90003e0f898 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: 00000000fffffffe RCX: ffffffff819b24ff > RDX: ffff88802f9c1e00 RSI: ffffffff819b27a3 RDI: 0000000000000005 > RBP: ffffffff8ecbca40 R08: 0000000000000005 R09: 0000000000000000 > R10: 0000000000000001 R11: 0000000000000003 R12: ffffffff81a0eb30 > R13: 0000000000000402 R14: 0000000000000002 R15: ffffffff8de3fcd8 > FS: 000055556e1df380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000020000100 CR3: 00000000763aa000 CR4: 00000000003526f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > unregister_trace_sched_switch include/trace/events/sched.h:222 [inline] > tracing_sched_unregister kernel/trace/trace_sched_switch.c:87 [inline] > tracing_stop_sched_switch kernel/trace/trace_sched_switch.c:129 [inline] > tracing_stop_cmdline_record+0x66/0xa0 kernel/trace/trace_sched_switch.c:140 > __ftrace_event_enable_disable+0x73f/0x850 kernel/trace/trace_events.c:645 > ftrace_event_enable_disable kernel/trace/trace_events.c:730 [inline] > ftrace_clear_events kernel/trace/trace_events.c:739 [inline] > ftrace_event_set_open+0x238/0x2d0 kernel/trace/trace_events.c:2270 > do_dentry_open+0xf59/0x1ea0 fs/open.c:945 > vfs_open+0x82/0x3f0 fs/open.c:1075 > do_open fs/namei.c:3828 [inline] > path_openat+0x1e6a/0x2d60 fs/namei.c:3987 > do_filp_open+0x20c/0x470 fs/namei.c:4014 > do_sys_openat2+0x17a/0x1e0 fs/open.c:1402 > do_sys_open fs/open.c:1417 [inline] > __do_sys_openat fs/open.c:1433 [inline] > __se_sys_openat fs/open.c:1428 [inline] > __x64_sys_openat+0x175/0x210 fs/open.c:1428 > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7efe2dcdd6e9 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 90 48 89 f8 48 89 f7 48 > 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffd6660cd18 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efe2dcdd6e9 > RDX: 0000000000020201 RSI: 0000000020000100 RDI: ffffffffffffff9c > RBP: 0000000000010bb4 R08: 0000000000000000 R09: 00000000000000a0 > R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6660cd2c > R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 > </TASK> > > > --- > 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.
