(cc people from the thread "Binder regression caused by commit a43cfc87caaf") On Mon, 08 Aug 2022 12:33:21 -0700 syzbot <syzbot+a7b60a176ec13cafb793@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > syzbot has found a reproducer for the following issue on: > > HEAD commit: ca688bff68bc Add linux-next specific files for 20220808 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=14807dfa080000 > kernel config: https://syzkaller.appspot.com/x/.config?x=4c20e006003cdecb > dashboard link: https://syzkaller.appspot.com/bug?extid=a7b60a176ec13cafb793 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12999232080000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15452c12080000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+a7b60a176ec13cafb793@xxxxxxxxxxxxxxxxxxxxxxxxx > > binder: 7796:7797 ioctl c0306201 20001480 returned -14 > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 7797 at include/linux/mmap_lock.h:155 mmap_assert_locked include/linux/mmap_lock.h:155 [inline] > WARNING: CPU: 1 PID: 7797 at include/linux/mmap_lock.h:155 find_vma+0xf8/0x270 mm/mmap.c:2255 > Modules linked in: > CPU: 1 PID: 7797 Comm: syz-executor269 Not tainted 5.19.0-next-20220808-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 > RIP: 0010:mmap_assert_locked include/linux/mmap_lock.h:155 [inline] > RIP: 0010:find_vma+0xf8/0x270 mm/mmap.c:2255 > Code: 49 8d bc 24 28 01 00 00 be ff ff ff ff e8 40 2e c8 07 31 ff 89 c3 89 c6 e8 85 e2 c4 ff 85 db 0f 85 61 ff ff ff e8 b8 e5 c4 ff <0f> 0b e9 55 ff ff ff e8 ac e5 c4 ff 4c 89 e7 e8 54 38 fb ff 0f 0b > RSP: 0018:ffffc9000cee7530 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 > RDX: ffff88807c278000 RSI: ffffffff81b72058 RDI: 0000000000000005 > RBP: 0000000020ffc000 R08: 0000000000000005 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807dda3100 > R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 > FS: 00007f5fdf1fb700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 000000007d391000 CR4: 00000000003506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > vma_lookup include/linux/mm.h:2743 [inline] > binder_alloc_get_vma drivers/android/binder_alloc.c:340 [inline] > binder_alloc_new_buf_locked drivers/android/binder_alloc.c:405 [inline] > binder_alloc_new_buf+0xd6/0x18b0 drivers/android/binder_alloc.c:590 > binder_transaction+0x242e/0x9a80 drivers/android/binder.c:3187 > binder_thread_write+0x8a9/0x3220 drivers/android/binder.c:3963 > binder_ioctl_write_read drivers/android/binder.c:5024 [inline] > binder_ioctl+0x3470/0x6d00 drivers/android/binder.c:5311 > vfs_ioctl fs/ioctl.c:51 [inline] > __do_sys_ioctl fs/ioctl.c:870 [inline] > __se_sys_ioctl fs/ioctl.c:856 [inline] > __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7f5fdf24ae19 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 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:00007f5fdf1fb318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 00007f5fdf2d34e8 RCX: 00007f5fdf24ae19 > RDX: 0000000020000680 RSI: 00000000c0306201 RDI: 0000000000000003 > RBP: 00007f5fdf2d34e0 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5fdf2a02c0 > R13: 00007ffc598955af R14: 00007f5fdf1fb400 R15: 0000000000022000 > </TASK>
