watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor5:10181] Modules linked in: CPU: 0 PID: 10181 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:__read_once_size include/linux/compiler.h:197 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x36b/0x4e0 kernel/smp.c:302 Code: 3a e8 09 44 6d 00 45 85 f6 0f 84 6d ff ff ff 41 89 de eb 10 90 66 2e 0f 1f 84 00 00 00 00 00 e8 3b 4d 12 00 f3 90 8b 5c 24 78 <4c> 89 e7 e8 7d 3a 6d 00 8b 00 83 e0 01 83 e3 01 85 c0 74 06 f7 d0 RSP: 0018:ffff88012247f2e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffffffff815412f5 RBX: 0000000000000003 RCX: ffff8801290a0000 RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0006cdafa0 RBP: ffff88012247f3c0 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81179950 R12: ffff88012247f358 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801290a0900 FS: 00007f40ce775700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000208f9f09 CR3: 0000000141650000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: 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 get_signal+0x1425/0x1ef0 kernel/signal.c:2513 do_signal+0x11d/0x2060 arch/x86/kernel/signal.c:816 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x273/0x410 arch/x86/entry/common.c:197 syscall_return_slowpath+0xdb/0x700 arch/x86/entry/common.c:268 do_syscall_64+0xde/0x100 arch/x86/entry/common.c:294 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:00007f40ce774c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000137 RAX: 00000000000000f7 RBX: 00007f40ce7756d4 RCX: 0000000000457099 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 000000000000020e RBP: 0000000000930140 R08: 000000000000023a R09: 0000000000000000 R10: 0000000020121000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d3c18 R14: 00000000004c86ea R15: 0000000000000001 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: 10177 Comm: syz-executor2 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:fffffe0000049ea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000001bb1a4000 R15: 0000000000000000 FS: 00007f3472db9700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffea9140ad8 CR3: 00000001bb1a4000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace f411b7f2ddfa1071 ]--- 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:fffffe0000049ea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000001bb1a4000 R15: 0000000000000000 FS: 00007f3472db9700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffea9140ad8 CR3: 00000001bb1a4000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400