watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [kworker/u4:5:104]
Modules linked in:
CPU: 0 PID: 104 Comm: kworker/u4:5 Not tainted 4.18.0-rc8+ #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
RIP: 0010:__read_once_size include/linux/compiler.h:197 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x23/0x50 kernel/kcov.c:101
Code: 90 90 90 90 90 90 90 48 8b 04 24 65 48 8b 0c 25 80 fc 02 00 65 8b 14 25 94 fc 02 00 f7 c2 00 01 1f 00 75 2c 8b 91 b8 18 00 00 <83> fa 02 75 21 48 8b 91 c0 18 00 00 48 8b 32 48 8d 7e 01 8b 89 bc 
RSP: 0018:ffff8801d366e8b8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffffffff81535185 RBX: 0000000000000001 RCX: ffff8801d3640000
RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000af46940
RBP: ffff8801d366e998 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff81174df0 R12: ffff8801d366e938
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d36408f8
FS:  0000000000000000(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32421000 CR3: 000000012ae3a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smp_call_function_many+0x658/0xdb0 kernel/smp.c:434
 native_flush_tlb_others+0x4e8/0x500 arch/x86/mm/tlb.c:595
 flush_tlb_mm_range+0x32b/0x450 arch/x86/mm/tlb.c:644
 flush_tlb_page arch/x86/include/asm/tlbflush.h:526 [inline]
 ptep_clear_flush+0x11c/0x1f0 mm/pgtable-generic.c:87
 page_mkclean_one+0x4b2/0x810 mm/rmap.c:915
 rmap_walk_file+0x727/0xf30 mm/rmap.c:1850
 rmap_walk mm/rmap.c:1868 [inline]
 page_mkclean+0x37f/0x510 mm/rmap.c:984
 clear_page_dirty_for_io+0x403/0x1020 mm/page-writeback.c:2684
 mpage_submit_page fs/ext4/inode.c:2188 [inline]
 mpage_process_page_bufs+0xa3a/0xea0 fs/ext4/inode.c:2318
 mpage_prepare_extent_to_map+0xcf6/0x1250 fs/ext4/inode.c:2680
 ext4_writepages+0x1fe7/0x67a0 fs/ext4/inode.c:2807
 do_writepages+0x184/0x3c0 mm/page-writeback.c:2341
 __writeback_single_inode+0x3da/0x1430 fs/fs-writeback.c:1323
 writeback_sb_inodes+0x118b/0x2780 fs/fs-writeback.c:1587
 __writeback_inodes_wb+0x1e4/0x680 fs/fs-writeback.c:1656
 wb_writeback+0x944/0x12c0 fs/fs-writeback.c:1765
 wb_check_start_all fs/fs-writeback.c:1889 [inline]
 wb_do_writeback fs/fs-writeback.c:1915 [inline]
 wb_workfn+0x10a6/0x1f00 fs/fs-writeback.c:1949
 process_one_work+0x1605/0x1f40 kernel/workqueue.c:2153
 worker_thread+0x11a2/0x2590 kernel/workqueue.c:2296
 kthread+0x44d/0x480 kernel/kthread.c:247
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan_entry.c:81!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 8385 Comm: syz-executor0 Not tainted 4.18.0-rc8+ #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80
Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e 
RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046
RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101
RDX: 00000000ffff8802 RSI: ffffffff88c0136c RDI: ffffffff7fffffff
RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000127500000 R15: 0000000000000000
FS:  00007fea41b36700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32321000 CR3: 0000000127500000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace d670ae0677ce2adc ]---
RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80
Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e 
RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046
RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101
RDX: 00000000ffff8802 RSI: ffffffff88c0136c RDI: ffffffff7fffffff
RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000127500000 R15: 0000000000000000
FS:  00007fea41b36700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32321000 CR3: 0000000127500000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400