watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor3:22078] Modules linked in: CPU: 1 PID: 22078 Comm: syz-executor3 Not tainted 4.19.0-rc1+ #38 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:663 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:668 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x367/0x4e0 kernel/smp.c:302 Code: fe ff ff 8b 3a e8 19 50 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 ab 50 12 00 f3 90 <8b> 5c 24 78 4c 89 e7 e8 8d 46 6d 00 8b 00 83 e0 01 83 e3 01 85 c0 RSP: 0018:ffff88008303f7c0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81542b05 RBX: 0000000000000001 RCX: ffff8801b00bbb00 RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea00031217a0 RBP: ffff88008303f8a0 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81179a80 R12: ffff88008303f838 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b00bc400 FS: 0000000001e30940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fae8f0ab000 CR3: 0000000079788000 CR4: 00000000001406e0 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 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop arch/x86/entry/common.c:166 [inline] prepare_exit_to_usermode+0x33e/0x410 arch/x86/entry/common.c:197 syscall_return_slowpath+0xdb/0x700 arch/x86/entry/common.c:268 do_syscall_64+0x1ab/0x220 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x410c41 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:0000000000a3fdc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000410c41 RDX: 0000001b31820000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000a3fcf0 R11: 0000000000000293 R12: 000000000000000b R13: 00000000000f40bf R14: 0000000000000655 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: 22126 Comm: syz-executor1 Not tainted 4.19.0-rc1+ #38 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: 0000000080000000 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: 0000000000000680 RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000079664000 R15: 0000000000000000 FS: 00007f1710e31700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000007201b0 CR3: 0000000079664000 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 6fc14fe008e2b977 ]--- 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: 0000000080000000 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: 0000000000000680 RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000079664000 R15: 0000000000000000 FS: 00007f1710e31700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000007201b0 CR3: 0000000079664000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600