watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor1:24793] Modules linked in: CPU: 1 PID: 24793 Comm: syz-executor1 Not tainted 4.18.0-rc4+ #24 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:msan_get_shadow_origin_ptr+0x6f/0x300 mm/kmsan/kmsan_instr.c:260 Code: 8b 48 0f 45 d8 80 3c 25 00 f0 a0 8b 00 0f 84 08 02 00 00 65 4c 8b 2c 25 80 fc 02 00 41 83 bd f4 08 00 00 00 0f 85 f1 01 00 00 <49> 81 fc 01 10 00 00 72 23 0f b6 ca 45 31 f6 48 c7 c7 ba 47 d7 8a RSP: 0018:ffff8800b3a2f208 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff8ba13000 RBX: ffffffff8ba11000 RCX: ffff880103d43b00 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8800b3a2f2d8 RBP: ffff8800b3a2f260 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff8117d090 R12: 0000000000000004 R13: ffff880103d43b00 R14: ffffffff8ba10000 R15: ffff8800b3a2f2d8 FS: 00007f4dc65dc700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004544da CR3: 00000000b3c12000 CR4: 00000000001406e0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 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+0x363/0x500 kernel/smp.c:302 smp_call_function_many+0x672/0xe30 kernel/smp.c:434 on_each_cpu_mask kernel/smp.c:632 [inline] on_each_cpu_cond+0x335/0x420 kernel/smp.c:684 invalidate_bh_lrus+0x54/0x60 fs/buffer.c:1392 kill_bdev fs/block_dev.c:85 [inline] __blkdev_put+0x44b/0xcc0 fs/block_dev.c:1787 blkdev_put+0x435/0x570 fs/block_dev.c:1855 blkdev_close+0xa6/0xf0 fs/block_dev.c:1862 __fput+0x458/0xa30 fs/file_table.c:209 ____fput+0x37/0x40 fs/file_table.c:243 task_work_run+0x22e/0x2b0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x110e/0x3930 kernel/exit.c:867 do_group_exit+0x1a0/0x360 kernel/exit.c:970 get_signal+0x15c3/0x2190 kernel/signal.c:2468 do_signal+0xca/0x2060 arch/x86/kernel/signal.c:816 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x297/0x430 arch/x86/entry/common.c:197 syscall_return_slowpath+0x108/0x800 arch/x86/entry/common.c:268 do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455e29 Code: 1d ba 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f4dc65dbce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bec0 RCX: 0000000000455e29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bec0 RBP: 000000000072bec0 R08: 0000000000000000 R09: 000000000072bea0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000a3e80f R14: 00007f4dc65dc9c0 R15: 0000000000000000 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: 24800 Comm: syz-executor6 Not tainted 4.18.0-rc4+ #24 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:fffffe000000eea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: ffffffff7fffffff RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000000b4f2a000 R15: 0000000000000000 FS: 00007f918d4c6700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1043583000 CR3: 00000000b4f2a000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 868a5a50bf536f39 ]--- 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:fffffe000000eea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: ffffffff7fffffff RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000000b4f2a000 R15: 0000000000000000 FS: 00007f918d4c6700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1043583000 CR3: 00000000b4f2a000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600