Hello, syzbot found the following issue on: HEAD commit: d9137320 Add linux-next specific files for 20201124 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=17b14079500000 kernel config: https://syzkaller.appspot.com/x/.config?x=2ac6081150c8eac dashboard link: https://syzkaller.appspot.com/bug?extid=ce635500093181f39c1c compiler: gcc (GCC) 10.1.0-syz 20200507 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ce635500093181f39c1c@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2192 at include/linux/memcontrol.h:621 arch_static_branch arch/x86/include/asm/jump_label.h:25 [inline] WARNING: CPU: 1 PID: 2192 at include/linux/memcontrol.h:621 mem_cgroup_disabled include/linux/memcontrol.h:504 [inline] WARNING: CPU: 1 PID: 2192 at include/linux/memcontrol.h:621 mem_cgroup_lruvec include/linux/memcontrol.h:616 [inline] WARNING: CPU: 1 PID: 2192 at include/linux/memcontrol.h:621 clear_pgdat_congested mm/vmscan.c:3443 [inline] WARNING: CPU: 1 PID: 2192 at include/linux/memcontrol.h:621 prepare_kswapd_sleep mm/vmscan.c:3480 [inline] WARNING: CPU: 1 PID: 2192 at include/linux/memcontrol.h:621 prepare_kswapd_sleep+0xed/0x250 mm/vmscan.c:3456 Modules linked in: CPU: 1 PID: 2192 Comm: kswapd0 Not tainted 5.10.0-rc5-next-20201124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mem_cgroup_lruvec include/linux/memcontrol.h:621 [inline] RIP: 0010:clear_pgdat_congested mm/vmscan.c:3443 [inline] RIP: 0010:prepare_kswapd_sleep mm/vmscan.c:3480 [inline] RIP: 0010:prepare_kswapd_sleep+0xed/0x250 mm/vmscan.c:3456 Code: 89 ee 48 89 df e8 73 d3 ff ff 31 ff 41 89 c4 89 c6 e8 87 19 d7 ff 45 84 e4 74 cc e8 6d 21 d7 ff 0f 1f 44 00 00 e8 63 21 d7 ff <0f> 0b 48 c7 c0 28 8d ee 8c 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 RSP: 0000:ffffc900085bfda0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88813fffb000 RCX: ffffffff81998e19 RDX: ffff8880168c1ac0 RSI: ffffffff81998e2d RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000ab3 R09: 0000000000000f89 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000b08e000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kswapd_try_to_sleep mm/vmscan.c:3784 [inline] kswapd+0x37d/0xdb0 mm/vmscan.c:3899 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 2192 Comm: kswapd0 Not tainted 5.10.0-rc5-next-20201124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 panic+0x306/0x73d kernel/panic.c:231 __warn.cold+0x35/0x44 kernel/panic.c:605 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x3c/0x60 arch/x86/kernel/traps.c:239 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:259 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:578 RIP: 0010:mem_cgroup_lruvec include/linux/memcontrol.h:621 [inline] RIP: 0010:clear_pgdat_congested mm/vmscan.c:3443 [inline] RIP: 0010:prepare_kswapd_sleep mm/vmscan.c:3480 [inline] RIP: 0010:prepare_kswapd_sleep+0xed/0x250 mm/vmscan.c:3456 Code: 89 ee 48 89 df e8 73 d3 ff ff 31 ff 41 89 c4 89 c6 e8 87 19 d7 ff 45 84 e4 74 cc e8 6d 21 d7 ff 0f 1f 44 00 00 e8 63 21 d7 ff <0f> 0b 48 c7 c0 28 8d ee 8c 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 RSP: 0000:ffffc900085bfda0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88813fffb000 RCX: ffffffff81998e19 RDX: ffff8880168c1ac0 RSI: ffffffff81998e2d RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000ab3 R09: 0000000000000f89 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000003 kswapd_try_to_sleep mm/vmscan.c:3784 [inline] kswapd+0x37d/0xdb0 mm/vmscan.c:3899 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
