Hello, syzbot found the following issue on:
HEAD commit: 47ec5303 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1348d9dc900000 kernel config: https://syzkaller.appspot.com/x/.config?x=7bb894f55faf8242 dashboard link: https://syzkaller.appspot.com/bug?extid=d4336c84ed0099fdbe47 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f1572a900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12669494900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d4336c84ed0099fdb...@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6845 at kernel/entry/common.c:338 irqentry_exit+0x47/0x90 kernel/entry/common.c:342 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6845 Comm: syz-executor025 Not tainted 5.8.0-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+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x45 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:235 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:irqentry_exit+0x47/0x90 kernel/entry/common.c:338 Code: 27 f6 87 91 00 00 00 02 74 18 40 84 f6 75 3b 65 8b 05 ad ea 12 78 a9 ff ff ff 7f 74 11 e9 91 cd 8a f9 40 84 f6 75 3f c3 eb 89 <0f> 0b eb ca e8 f0 bf 72 f9 65 48 8b 04 25 00 ff 01 00 48 8b 00 a8 RSP: 0000:ffffc900054471d0 EFLAGS: 00010002 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8179db77 RDX: ffff88809b98e340 RSI: 0000000000000000 RDI: ffffc90005447208 RBP: ffffc90005447208 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 exc_page_fault+0xc2/0x160 arch/x86/mm/fault.c:1421 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:__softirqentry_text_end+0x39/0x55 Code: be 04 e0 ff ba f2 ff ff ff 31 c9 e9 db c5 ce ff 41 bf f2 ff ff ff 31 c0 e9 6a 36 e1 f8 41 bf f2 ff ff ff 31 ed e9 85 36 e1 f8 <41> be f2 ff ff ff 48 31 c0 e9 92 39 e1 f8 41 be f2 ff ff ff 48 31 RSP: 0000:ffffc900054472b0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffc90005447370 RCX: ffffffff810143e2 RDX: ffff88809b98e340 RSI: ffffffff810143f0 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff88809b98e347 R10: 0000000000000000 R11: 0000000000000001 R12: ffffc9000544737c R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88809b98e340 get_perf_callchain+0x321/0x620 kernel/events/callchain.c:222 perf_callchain+0x165/0x1c0 kernel/events/core.c:6986 perf_prepare_sample+0x8fd/0x1d40 kernel/events/core.c:7013 __perf_event_output kernel/events/core.c:7171 [inline] perf_event_output_forward+0xf3/0x270 kernel/events/core.c:7191 __perf_event_overflow+0x13c/0x370 kernel/events/core.c:8846 perf_swevent_overflow kernel/events/core.c:8922 [inline] perf_swevent_event+0x4b9/0x550 kernel/events/core.c:8960 perf_tp_event+0x2e4/0xb50 kernel/events/core.c:9378 perf_trace_run_bpf_submit+0x11c/0x200 kernel/events/core.c:9352 perf_trace_lock+0x2e2/0x4a0 include/trace/events/lock.h:39 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x571/0x8e0 kernel/locking/lockdep.c:5022 alloc_set_pte+0x3af/0x1ac0 mm/memory.c:3675 filemap_map_pages+0x103d/0x1280 mm/filemap.c:2725 do_fault_around mm/memory.c:3818 [inline] do_read_fault mm/memory.c:3852 [inline] do_fault mm/memory.c:3985 [inline] handle_pte_fault mm/memory.c:4225 [inline] __handle_mm_fault mm/memory.c:4357 [inline] handle_mm_fault+0x39b7/0x43f0 mm/memory.c:4394 do_user_addr_fault+0x5a2/0xd00 arch/x86/mm/fault.c:1295 handle_page_fault arch/x86/mm/fault.c:1365 [inline] exc_page_fault+0xa8/0x160 arch/x86/mm/fault.c:1418 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0033:0x49f4d0 Code: Bad RIP value. RSP: 002b:00007fff1785f378 EFLAGS: 00010202 RAX: 000000000049f4d0 RBX: 0000000000000001 RCX: 00000000006d1190 RDX: 0000000000402140 RSI: 0000000000000000 RDI: 00000000004bf848 RBP: 00007fff1785f380 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 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 syzkal...@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
