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PANIC: double fault, error_code: 0x0
CPU: 1 PID: 6378 Comm: syz-executor824 Not tainted 4.19.0+ #81
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BUG: KMSAN: uninit-value in irq_work_claim+0x153/0x390 kernel/irq_work.c:40
CPU: 1 PID: 6378 Comm: syz-executor824 Not tainted 4.19.0+ #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <#DF>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x32d/0x480 lib/dump_stack.c:113
 kmsan_report+0x19f/0x300 mm/kmsan/kmsan.c:911
 kmsan_internal_check_memory+0x35f/0x450 mm/kmsan/kmsan.c:993
 kmsan_check_memory+0xd/0x10 mm/kmsan/kmsan.c:1000
 irq_work_claim+0x153/0x390 kernel/irq_work.c:40
 irq_work_queue+0x44/0x280 kernel/irq_work.c:93
 wake_up_klogd kernel/printk/printk.c:2911 [inline]
 vprintk_emit+0x693/0x790 kernel/printk/printk.c:1934
 vprintk_default+0x90/0xa0 kernel/printk/printk.c:1971
 vprintk_func+0x26b/0x2a0 kernel/printk/printk_safe.c:398
 printk+0x1a3/0x1f0 kernel/printk/printk.c:2007
 dump_stack_print_info+0x2c4/0x3c0 lib/dump_stack.c:47
 show_regs_print_info+0x37/0x40 lib/dump_stack.c:71
 show_regs+0x38/0x170 arch/x86/kernel/dumpstack.c:410
 df_debug+0x86/0xb0 arch/x86/kernel/doublefault.c:80
 do_double_fault+0x362/0x480 arch/x86/kernel/traps.c:449
 double_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1002
RIP: 0010:kmsan_get_origin_address+0xa/0x370 mm/kmsan/kmsan.c:1188
Code: eb fe 0f 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 48 83 ec 10 48 89 75 c8 48 89 fb 49 bc 00 00 00 00 00 78
RSP: 0018:fffffe000003d000 EFLAGS: 00010086
RAX: 00000000000001a8 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000088 RDI: fffffe000003d150
RBP: fffffe000003d018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000088
R13: fffffe000003d1c0 R14: fffffe000003d1a8 R15: fffffe000003d1a8
 </#DF>
 <ENTRY_TRAMPOLINE>
 kmsan_memmove_origins+0xbd/0x1d0 mm/kmsan/kmsan.c:439
 __msan_memmove+0x6c/0x80 mm/kmsan/kmsan_instr.c:196
 fixup_bad_iret+0x9b/0x130 arch/x86/kernel/traps.c:676
 error_entry+0xad/0xc0 arch/x86/entry/entry_64.S:1329
RIP: 0000:          (null)
Code: Bad RIP value.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: ffffffff8ae00e58 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000006e0000005b RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000004009ae R09: 0000000044000004
R10: 00000000004012e0 R11: 0000000000000000 R12: 00000000004009ae
R13: 0000000044000004 R14: 00000000004012e0 R15: 0000000000000000
 </ENTRY_TRAMPOLINE>

Local variable description: ----__ai_ptr@irq_work_claim
Variable was created at:
 irq_work_claim+0x4b/0x390 kernel/irq_work.c:30
 irq_work_queue+0x44/0x280 kernel/irq_work.c:93

Byte 7 of 8 is uninitialized
Memory access of size 8 starts at fffffe0000045a38
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