* kernel BUG at drivers/dma-buf/dma-buf.c:LINE! @ 2020-03-07 17:45 syzbot 2020-12-19 2:50 ` syzbot 0 siblings, 1 reply; 3+ messages in thread From: syzbot @ 2020-03-07 17:45 UTC (permalink / raw) To: dri-devel, linaro-mm-sig, linux-kernel, linux-media, sumit.semwal, syzkaller-bugs Hello, syzbot found the following crash on: HEAD commit: 63623fd4 Merge tag 'for-linus' of git://git.kernel.org/pub.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=177bf331e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=9833e26bab355358 dashboard link: https://syzkaller.appspot.com/bug?extid=d6734079f30f7fc39021 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=109d3ac3e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+d6734079f30f7fc39021@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at drivers/dma-buf/dma-buf.c:99! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 18500 Comm: syz-executor.0 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dma_buf_release+0x35b/0x420 drivers/dma-buf/dma-buf.c:99 Code: 00 00 e8 f8 d3 ec fc 4c 89 e7 45 31 e4 e8 ed 7a 35 fd e8 38 25 f7 fc 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 25 25 f7 fc <0f> 0b e8 1e 25 f7 fc 4c 89 ef e8 46 eb 00 00 eb 97 e8 0f 25 f7 fc RSP: 0018:ffffc9000296fdc8 EFLAGS: 00010293 RAX: ffff888094086300 RBX: 0000000000000004 RCX: ffffffff847e6fc5 RDX: 0000000000000000 RSI: ffffffff847e722b RDI: 0000000000000005 RBP: ffffc9000296fdf0 R08: ffff888094086300 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808c6ec800 R13: ffff88808e6ecd7c R14: ffff88808e6ecd28 R15: ffff888097011940 FS: 0000000002b7b940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000008a9e80 CR3: 00000000916f0000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x676/0x790 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x416011 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fff23e39030 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000009 RCX: 0000000000416011 RDX: 0000000000000000 RSI: 0000000000000081 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000000 R09: 01ffffffffffffff R10: 0000000000770938 R11: 0000000000000293 R12: 000000000076bf20 R13: 0000000000770948 R14: 0000000000000000 R15: 000000000076bf2c Modules linked in: ---[ end trace 432bc1955550b75d ]--- RIP: 0010:dma_buf_release+0x35b/0x420 drivers/dma-buf/dma-buf.c:99 Code: 00 00 e8 f8 d3 ec fc 4c 89 e7 45 31 e4 e8 ed 7a 35 fd e8 38 25 f7 fc 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 25 25 f7 fc <0f> 0b e8 1e 25 f7 fc 4c 89 ef e8 46 eb 00 00 eb 97 e8 0f 25 f7 fc RSP: 0018:ffffc9000296fdc8 EFLAGS: 00010293 RAX: ffff888094086300 RBX: 0000000000000004 RCX: ffffffff847e6fc5 RDX: 0000000000000000 RSI: ffffffff847e722b RDI: 0000000000000005 RBP: ffffc9000296fdf0 R08: ffff888094086300 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808c6ec800 R13: ffff88808e6ecd7c R14: ffff88808e6ecd28 R15: ffff888097011940 FS: 0000000002b7b940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000008a9e80 CR3: 00000000916f0000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: kernel BUG at drivers/dma-buf/dma-buf.c:LINE! 2020-03-07 17:45 kernel BUG at drivers/dma-buf/dma-buf.c:LINE! syzbot @ 2020-12-19 2:50 ` syzbot 2020-12-19 9:41 ` Dmitry Vyukov 0 siblings, 1 reply; 3+ messages in thread From: syzbot @ 2020-12-19 2:50 UTC (permalink / raw) To: akpm, arve, christian.koenig, christian, colin.king, devel, dri-devel, gregkh, hridya, jbwyatt4, joel, linaro-mm-sig-owner, linaro-mm-sig, linux-kernel, linux-kselftest, linux-media, m.szyprowski, maco, masahiroy, peterz, shuah, skhan, sumit.semwal, surenb, syzkaller-bugs, tkjos syzbot suspects this issue was fixed by commit: commit e722a295cf493388dae474745d30e91e1a2ec549 Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Date: Thu Aug 27 12:36:27 2020 +0000 staging: ion: remove from the tree bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17d4f137500000 start commit: abb3438d Merge tag 'm68knommu-for-v5.9-rc3' of git://git.k.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=978db74cb30aa994 dashboard link: https://syzkaller.appspot.com/bug?extid=d6734079f30f7fc39021 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17428596900000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: staging: ion: remove from the tree For information about bisection process see: https://goo.gl/tpsmEJ#bisection ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: kernel BUG at drivers/dma-buf/dma-buf.c:LINE! 2020-12-19 2:50 ` syzbot @ 2020-12-19 9:41 ` Dmitry Vyukov 0 siblings, 0 replies; 3+ messages in thread From: Dmitry Vyukov @ 2020-12-19 9:41 UTC (permalink / raw) To: syzbot Cc: Andrew Morton, Arve Hjønnevåg, christian.koenig, Christian Brauner, Colin King, open list:ANDROID DRIVERS, DRI, Greg Kroah-Hartman, Hridya Valsaraju, jbwyatt4, Joel Fernandes, linaro-mm-sig-owner, linaro-mm-sig, LKML, open list:KERNEL SELFTEST FRAMEWORK, linux-media, m.szyprowski, Martijn Coenen, masahiroy, Peter Zijlstra, Shuah Khan, Shuah Khan, Sumit Semwal, Suren Baghdasaryan, syzkaller-bugs, Todd Kjos On Sat, Dec 19, 2020 at 3:50 AM syzbot <syzbot+d6734079f30f7fc39021@syzkaller.appspotmail.com> wrote: > > syzbot suspects this issue was fixed by commit: > > commit e722a295cf493388dae474745d30e91e1a2ec549 > Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Date: Thu Aug 27 12:36:27 2020 +0000 > > staging: ion: remove from the tree > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17d4f137500000 > start commit: abb3438d Merge tag 'm68knommu-for-v5.9-rc3' of git://git.k.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=978db74cb30aa994 > dashboard link: https://syzkaller.appspot.com/bug?extid=d6734079f30f7fc39021 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17428596900000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: staging: ion: remove from the tree > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection The reproducer opens /dev/ion #syz fix: staging: ion: remove from the tree ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-12-19 9:42 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-03-07 17:45 kernel BUG at drivers/dma-buf/dma-buf.c:LINE! syzbot 2020-12-19 2:50 ` syzbot 2020-12-19 9:41 ` Dmitry Vyukov
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