Hello, syzbot found the following crash on: HEAD commit: a811c1fa Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16ad1d70100000 kernel config: https://syzkaller.appspot.com/x/.config?x=43badbd0e7e1137e dashboard link: https://syzkaller.appspot.com/bug?extid=9c08aaa363ca5784c9e9 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d3c588100000 The bug was bisected to: commit eab59075d3cd7f3535aa2dbbc19a198dfee58892 Author: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx> Date: Wed Dec 28 11:26:31 2016 +0000 sctp: reduce indent level at sctp_sf_tabort_8_4_8 bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=151b6c7c100000 final crash: https://syzkaller.appspot.com/x/report.txt?x=171b6c7c100000 console output: https://syzkaller.appspot.com/x/log.txt?x=131b6c7c100000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+9c08aaa363ca5784c9e9@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: eab59075d3cd ("sctp: reduce indent level at sctp_sf_tabort_8_4_8") ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7373 at kernel/cgroup/cgroup.c:3111 cgroup_apply_control_disable kernel/cgroup/cgroup.c:3111 [inline] WARNING: CPU: 0 PID: 7373 at kernel/cgroup/cgroup.c:3111 cgroup_finalize_control+0xb6c/0xd60 kernel/cgroup/cgroup.c:3178 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7373 Comm: syz-executor.0 Not tainted 5.7.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1e9/0x30e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1ac/0x2d0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:175 [inline] do_error_trap+0xca/0x1c0 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:cgroup_apply_control_disable kernel/cgroup/cgroup.c:3111 [inline] RIP: 0010:cgroup_finalize_control+0xb6c/0xd60 kernel/cgroup/cgroup.c:3178 Code: 89 f7 ff d3 eb 08 e8 53 fe 07 00 0f 1f 00 49 ff c4 49 83 fc 0d 0f 84 63 01 00 00 e8 3e fe 07 00 e9 a9 f8 ff ff e8 34 fe 07 00 <0f> 0b e9 88 f9 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c cd f8 ff RSP: 0018:ffffc900035a7ba8 EFLAGS: 00010293 RAX: ffffffff816b637c RBX: 0000000000000002 RCX: ffff88809e876100 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffffff89307148 R08: ffffffff816b5cfc R09: ffffed1015d07074 R10: ffffed1015d07074 R11: 0000000000000000 R12: 0000000000000008 R13: ffff88809251c000 R14: ffff88808eef2400 R15: dffffc0000000000 rebind_subsystems+0x737/0xe60 kernel/cgroup/cgroup.c:1750 cgroup_setup_root+0x679/0xd50 kernel/cgroup/cgroup.c:1984 cgroup1_root_to_use kernel/cgroup/cgroup-v1.c:1190 [inline] cgroup1_get_tree+0x7a2/0xae0 kernel/cgroup/cgroup-v1.c:1207 vfs_get_tree+0x88/0x270 fs/super.c:1547 do_new_mount fs/namespace.c:2816 [inline] do_mount+0x17ec/0x2900 fs/namespace.c:3141 __do_sys_mount fs/namespace.c:3350 [inline] __se_sys_mount+0xd3/0x100 fs/namespace.c:3327 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45f27a Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fff4f78e3a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fff4f78e400 RCX: 000000000045f27a RDX: 00000000004cad91 RSI: 00000000004c1465 RDI: 00000000004c1428 RBP: 0000000000000000 R08: 00000000004cf7b8 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000418390 R13: 00007fff4f78e628 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches
