login: panic: /syzkaller/managers/main/kernel/sys/kern/kern_timeout.c:607: callout_cc_add: Bad list head 0xfffffe00077bd028 first->prev != head
cpuid = 1
time = 1754426943
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056a7d530
kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056a7d690
vpanic() at vpanic+0x257/frame 0xfffffe0056a7d850
panic() at panic+0xb5/frame 0xfffffe0056a7d910
callout_cc_add() at callout_cc_add+0x339/frame 0xfffffe0056a7d970
callout_reset_sbt_on() at callout_reset_sbt_on+0x74f/frame 0xfffffe0056a7da90
mld_fasttimo() at mld_fasttimo+0x1b38/frame 0xfffffe0056a7dcd0
softclock_call_cc() at softclock_call_cc+0x422/frame 0xfffffe0056a7de80
softclock_thread() at softclock_thread+0x200/frame 0xfffffe0056a7def0
fork_exit() at fork_exit+0xcc/frame 0xfffffe0056a7df30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0056a7df30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 2 tid 100031 ]
Stopped at      kdb_enter+0x6e: movq    $0,0x25c43d7(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx         0xfffffe0002bf1850
rdx                          0
rbx         0xffffffff827cd4a0  .str.27
rsp         0xfffffe0056a7d670
rbp         0xfffffe0056a7d690
rsi                          0
rdi         0xffffffff81614c89  printf+0x149
r8                           0
r9                  0xffffffff
r10         0xd29ad5c2ac3af349
r11                       0x17
r12         0xfffffe000781a780
r13         0xfffffffffffffffd
r14         0xffffffff827cd4a0  .str.27
r15                          0
rip         0xffffffff815fe7be  kdb_enter+0x6e
rflags                    0x46
kdb_enter+0x6e: movq    $0,0x25c43d7(%rip)
db>