watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor6:9444] Modules linked in: CPU: 1 PID: 9444 Comm: syz-executor6 Not tainted 4.19.0-rc1+ #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lowmem_page_address include/linux/mm.h:1158 [inline] RIP: 0010:msan_get_shadow_origin_ptr+0x1f1/0x2e0 mm/kmsan/kmsan_instr.c:314 Code: 00 00 48 01 c8 48 c1 e8 05 48 be 00 b0 aa aa aa aa aa aa 48 0f af c6 4c 09 e8 48 01 d0 74 6d 41 81 e7 fc 0f 00 00 48 03 4f 48 <48> c1 e9 05 48 0f af ce 48 01 d1 49 89 c6 4c 01 f9 48 89 cb 75 4c RSP: 0018:ffff8801260cf730 EFLAGS: 00000207 ORIG_RAX: ffffffffffffff13 RAX: ffff88012663f818 RBX: ffffffff8a544000 RCX: 0000000009fb39a0 RDX: ffff880000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0006e44da0 RBP: ffff8801260cf780 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81179950 R12: 0000000000000004 R13: 0000000000000818 R14: ffffffff8a543000 R15: 0000000000000818 FS: 0000000001e9e940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f407b8872b8 CR3: 0000000145b72000 CR4: 00000000001406e0 Call Trace: __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:349 csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x373/0x4e0 kernel/smp.c:302 smp_call_function_many+0x658/0xdb0 kernel/smp.c:434 on_each_cpu_mask kernel/smp.c:634 [inline] on_each_cpu_cond+0x322/0x3f0 kernel/smp.c:686 invalidate_bh_lrus+0x54/0x60 fs/buffer.c:1400 kill_bdev fs/block_dev.c:85 [inline] __blkdev_put+0x460/0xc90 fs/block_dev.c:1790 blkdev_put+0x431/0x560 fs/block_dev.c:1858 blkdev_close+0xa6/0xf0 fs/block_dev.c:1865 __fput+0x4cf/0xc20 fs/file_table.c:278 ____fput+0x37/0x40 fs/file_table.c:309 task_work_run+0x22e/0x2b0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x10ee/0x3890 kernel/exit.c:869 do_group_exit+0x1a0/0x350 kernel/exit.c:972 __do_sys_exit_group+0x21/0x30 kernel/exit.c:983 __se_sys_exit_group+0x14/0x20 kernel/exit.c:981 __x64_sys_exit_group+0x1d/0x20 kernel/exit.c:981 do_syscall_64+0xb8/0x100 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457099 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:0000000000a3fda8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000457099 RDX: 0000000000410c51 RSI: fffffffffffffff7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffff R09: 000000000003e579 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000007 R13: 000000000003e579 R14: 0000000000000046 R15: badc0ffeebadface Sending NMI from CPU 1 to CPUs 0: ------------[ cut here ]------------ kernel BUG at mm/kmsan/kmsan_entry.c:81! invalid opcode: 0000 [#1] SMP PTI CPU: 0 PID: 9468 Comm: syz-executor5 Not tainted 4.19.0-rc1+ #40 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 40 92 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 40 92 03 00 65 c6 04 25 d5 6f 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:fffffe000000eea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 000000012641a000 R15: 0000000000000000 FS: 00007fb9f42c5700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000705138 CR3: 000000012641a000 CR4: 00000000001406f0 Call Trace: Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace aec716d68dbf658e ]--- RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80 Code: 00 74 27 65 8b 04 25 40 92 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 40 92 03 00 65 c6 04 25 d5 6f 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:fffffe000000eea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 000000012641a000 R15: 0000000000000000 FS: 00007fb9f42c5700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000705138 CR3: 000000012641a000 CR4: 00000000001406f0